5 Star Roofing Contractors That Specializing In Commercial Roofs
Wednesday, November 28, 2012
Cool Roof Study -
Cool Roof Study - Austin, Texas
Research Highlights: LBNL Heat Island Group
In a recent study, a cost-competitive reflective roof membrane reduced the average summertime daily maximum roof-surface temperature of a retail store in Austin, Texas, from 168°F (76°C) to 126°F (52°C). The total air-conditioning energy use was thereby reduced by 11% and peak air-conditioning demand fell by 14%. This 100,000 square foot building is predicted to save about $65,000 over the life of the roof.
A reflective roof is typically light in color and absorbs less sunlight than does a conventional dark-colored roof. Less absorption of sunlight lowers the roof’s surface temperature, reducing the heat transfer through the roof. Thus, reflective roofs reduce air-conditioning (a/c) energy use. The magnitudes of energy savings depend upon building type, level of roof insulation, ventilation rate between roof and ceiling, a/c size and efficiency, and of course, roof solar reflectance.
In this study, sponsored by the U.S. Environmental Protection Agency (EPA) and the U.S. Department of Energy (DOE), the Heat Island Group at the Lawrence Berkeley National Laboratory measured and analyzed summertime air-conditioning energy savings and power-demand reduction of a large retail store in Austin, Texas, that was retrofitted with a reflective roof. The monitoring period was from August 1999 to September 2000. At 15-minute intervals, we measured the a/c energy use, total building energy use, temperatures at a variety of locations (including the roof surface, the bottom of the roof, the plenum between the roof and the ceiling, and the conditioned space), and climate parameters (ambient temperatures, wind speed and direction, and solar intensity). The building was monitored with its original black roof from August 1999 to April 2000. In April and May 2000, this roof was replaced with a white one membrane. We continued to monitor the building with its new white roof from late May through September 2000.
The average daily maximum roof-surface temperature for the black roof was 168°F (76°C). For the white roof it was reduced to 126°F (52°C). Similarly, the average maximum plenum temperature was reduced from 101°F (38°C) to 95°F (35°C). The average daily a/c savings were 355 kilowatt-hours (11% of total a/c use, saving about $750/month) and the peak-demand reduction was 35 kilowatts (14% of peak a/c demand, saving about $490/month) in the summer. We estimate that the installation of this cool roof saves over 60 megawatt-hours per year; the total annual energy- and peak-demand savings are estimated at $7,200. The total discounted savings over the expected life of the roof are estimated to be $60,000 to $70,000.
Reference:
Konopacki, S. and H. Akbari. 2001. "Measured Energy Savings and Demand Reduction from a Reflective Roof Membrane on a Large Retail Store in Austin," Lawrence Berkeley National
Monday, September 24, 2012
Elastomeric coatings are a cost-effective solution for repairing and preserving TPO rooftops
NEW YORK (ICIS)--US major Dow Chemical sees huge market potential for its acrylic-based elastomeric coatings for thermoplastic polyolefin (TPO) rooftops in the US, company executives said on Tuesday.
“Over the next few years, we see a $100m -plus plus market opportunity for this product in the US,” said Javier Banos, strategic marketing manager of Dow Construction Chemicals, at a media event in New York.
“We estimate there is 5bn-10bn square feet [465m-930m square metres] of installed TPO rooftops in the US just waiting to be coated,” he added.
Dow is aiming to commercialise its 100% acrylic RHOPLEX EC-3100 technology for TPO rooftop coatings by early 2011, it said. The product is currently being tested by customers, who are primarily coatings formulators, said Banos.
Adding a layer of specialised white coating on flat or low-slope rooftops provides two main benefits. It extends the life of the roof and increases heat reflectivity, resulting in significant energy savings from the cooler roof, said Joseph Rokowski, group leader of research and development (R&D) with Dow Construction Chemicals.
“We estimate that in the summer months, a cool roof can cut the electricity load for air conditioning by 20-25%,” said Rokowski.
The reflective property of the coating comes from titanium dioxide (TiO2), which is already in the product, he noted.
The problem with previous TPO roof coatings is that they did not adhere well to TPO rooftops, he said.
“Roof coatings did not properly adhere to TPO membranes, so formulators have been unable to participate in the TPO-recoat market. This is a brand new market for our product,” said Rokowski.
TPO rooftops have rapidly gained market share in the US in the past decade because of their easy installation, durability and reflective properties, he said. They now have market share of between 20-25% for flat to low-slope rooftops in the US, according to Dow.
However, as they become weathered, the rooftops can crack, leak and pick up dirt, diminishing their usefulness and energy-saving properties.
“Elastomeric coatings are a cost-effective solution for repairing and preserving TPO rooftops,” said Rokowski.
An acrylic TPO rooftop coating can typically be applied around four years after the initial TPO rooftop installation, when the rooftop becomes sufficiently weathered. And the coating can last about five years before it needs to be re-applied, he said.
The cost of the product would be comparable to high-end specialty acrylic coatings, Rokowski said.
The market for elastomeric rooftop coatings has grown at over 5%/year over the past decade, and Banos said he expects similar growth rates in the future.
Friday, September 21, 2012
Helicopters to be used for roof repair
Helicopters to be used for roof repair projectLow-flying helicopters will be used in a roofing project at a business in Beloit starting Saturday.Corporate Contractors Inc. (CCI) will begin a major roofing project at American Construction Metals (ACM), 1600 Park Ave. Low-flying helicopters will be used to lift materials. The helicopters are expected to be used Saturday and Sunday and on Oct. 6 and 7.Residents who observe a low-flying helicopters in the vicinity of the ACM building need not be alarmed. Officials from CCI have assured the city that construction noise will cease by 7 p.m. and the crews will abide by city noise ordinances, which prohibit noise between the hours of 10 p.m. and 7 a.m.
Wednesday, September 5, 2012
Why Attic Ventilation Is So Important ?
Attic ventilation is one of the single most important aspects of your home when it comes maintaining high energy efficiency, besides its numerous other benefits. If you suspect you don't have sufficient ventilation in your attic, or just want to upgrade the ventilation system you do have, talk to a roofing contractor or ventilation specialist about the best available options for your home.
Why Attic Ventilation Is So Important during Summer Months
First and foremost, proper ventilation in your attic means big energy savings. During the summer months an improperly ventilated attic can reach temperatures of over 160 degrees, and all that heat radiates right down into your home. If you've got an air conditioner, it's working overtime to compensate and costing you money. And if you don't have an air conditioner, all that extra heat can make hot summer days almost unbearable. By installing proper ventilation you can drastically cut down the time you'll need to run your AC, save money, and make your home more comfortable, all in one fell swoop.
Why Proper Ventilation Is So Important: the Winter Version
In the winter, your attic ventilation serves an entirely different purpose. Poor ventilation can lead to moisture build-up in your attic, and in the winter months that can mean big trouble. As the temperature in your attic fluctuates with the weather outside, that moisture can actually condensate, freeze, and then "rain" down on your attic when it melts. The result is water damage, and even worse, mold and mildew buildup. Furthermore, a well ventilated attic helps prevent ice and snow buildup on the outside of your roof as well, both of which can lead to host of other problems. Basically it doesn't matter what the season is, a well-ventilated attic is a home improvement must.
Tools of the Trade
A contractor who specializes in attic ventilation will be able to inform you which ventilation systems are best for your home, since your home design may limit, to some extent, the options you have to choose from. Nonetheless, here is a quick list of the most popular ventilation systems being installed today.
Thursday, August 30, 2012
Why Is TPO Roofing the Best Choice!
TPO roofing is the single ply roofing that is the latest in long lasting commercial roofing that creates a water tight barrier on flat and pitched roofs that lasts for many years. Used for new installations or re-roofing jobs, TPO is a cost effective product for roofs or any size.
TPO roofing, or thermoplastic olefin, is a single ply membrane that is applied over virtually any surface. It is inherently resistant to hot sun, ultraviolet rays and ozone. TPO is made from ethylene propylene rubber and its installation is environmentally safe. The completed applications are often referred to as monolithic or seamless but actually do have seams. These seams are 3 to 4 times as strong as the adhesive or tape seams of EPDM roofing.
TPO roofing is often fiber reinforced and can be plain of fleece backed. It is either self adhesive, adhered, fastened or ballasted with a river rock layer for weight and reflectivity.
TPO roofing provides many benefits to commercial roofing including:
Extreme tear resistance against not only the elements but foot traffic from recreation, bikes and even patio furniture.
Weather resistance to high winds, hail and hot sun with high UV radiation.
Cool Roof Compliant when properly installed with the correct solar reflectance.
Long lasting. Life spans from 10 to 20 years depending upon thickness and conditions.
TPO provides a long lasting, cost effective, energy efficient surface for any commercial building of any size. For a new installation or the replacement of the existing roof of large manufacturing facility or a small retail building, TPO is the perfect solution.
TPO roofing, or thermoplastic olefin, is a single ply membrane that is applied over virtually any surface. It is inherently resistant to hot sun, ultraviolet rays and ozone. TPO is made from ethylene propylene rubber and its installation is environmentally safe. The completed applications are often referred to as monolithic or seamless but actually do have seams. These seams are 3 to 4 times as strong as the adhesive or tape seams of EPDM roofing.
TPO roofing is often fiber reinforced and can be plain of fleece backed. It is either self adhesive, adhered, fastened or ballasted with a river rock layer for weight and reflectivity.
TPO roofing provides many benefits to commercial roofing including:
Extreme tear resistance against not only the elements but foot traffic from recreation, bikes and even patio furniture.
Weather resistance to high winds, hail and hot sun with high UV radiation.
Cool Roof Compliant when properly installed with the correct solar reflectance.
Long lasting. Life spans from 10 to 20 years depending upon thickness and conditions.
TPO provides a long lasting, cost effective, energy efficient surface for any commercial building of any size. For a new installation or the replacement of the existing roof of large manufacturing facility or a small retail building, TPO is the perfect solution.
Tuesday, August 28, 2012
Why do so many ROOFING contractors cheat on their liability insurance?
Why do so many ROOFING contractors cheat on their liability insurance?
The answer is quite simple, MONEY.
The answer is quite simple, MONEY.
Liability insurance is one of the biggest expenses for a roofing contractor. WHY?? because roofing
is a very risky business compared to most business. Liability insurance is a must for any business. However there are different policies and rates for every type of contractor. The basic liability policy covers Carpentry, Painting etc and other relatively safe trades. Doesn't it stand to reason that if roofing is such a risky business, your contractor should be insured???
A basic liability policy does not cover ROOFING. A policy that covers ROOFING, can cost as much as 300% more than regular liability insurance. All liability insurance is based on volume (either payroll or sales).
A basic liability policy does not cover ROOFING. A policy that covers ROOFING, can cost as much as 300% more than regular liability insurance. All liability insurance is based on volume (either payroll or sales).
So bottom line is, each job has a insurance cost that is a significant cost of the job. Easiest way to cut cut job cost....cut out insurance.
What does ROOFING liability insurance cover?
* Water damage to your house during replacement.
* Property damage to your house or landscaping or vehicle during replacement.
* Injury to anyone other than an employee during replacement.
* Poor or inferior workmanship.
Your house is your largest and most important asset.
Verify that your roofing contractor has the proper ROOFING liability insurance.
How?
On the bottom of your Liability Insurance Certificate, there will be a box that looks like this.
DESCRIPTION OF OPERATIONS
I LOCATIONS I VEHICLES / EXCLUSIONS ADDED BY ENDORSEMENT I SPECIAL PROVISIONS
"includes Roofing."
What does ROOFING liability insurance cover?
* Water damage to your house during replacement.
* Property damage to your house or landscaping or vehicle during replacement.
* Injury to anyone other than an employee during replacement.
* Poor or inferior workmanship.
Your house is your largest and most important asset.
Verify that your roofing contractor has the proper ROOFING liability insurance.
How?
On the bottom of your Liability Insurance Certificate, there will be a box that looks like this.
DESCRIPTION OF OPERATIONS
I LOCATIONS I VEHICLES / EXCLUSIONS ADDED BY ENDORSEMENT I SPECIAL PROVISIONS
"includes Roofing."
Saturday, August 25, 2012
Friday, August 24, 2012
Thursday, August 23, 2012
Benefits of Cool Roofs
Most of the roofs in the world (including over 90% of the roofs in the United States) are dark-colored. In the heat of the full sun, the surface of a black roof can increase in temperature as much as 50 °C (126 °F), reaching temperatures of 70 to 90 °C (158 to 194 °F). This heat increase can cause negative effects on cooling energy use and environments.
Cool roofs, on the other hand, offer both immediate and long-term benefits including:
Reduced building heat-gain, as a white or reflective roof typically increases only 5–14 °C (10–25 °F) above ambient temperature during the day
Savings of up to 15% the annual air-conditioning energy use of a single-story building[6]
Extended service life of roofs
Improved energy efficiency of roofs, especially when there isn't adequate insulation provided in the roof envelope
Improved thermal comfort in buildings that do not have air conditioning
Reduced air pollution and greenhouse gas emissions, as well as a significant offsetting of the warming impact of greenhouse gas emissions.[7]
Research and practical experience with the degradation of roofing membranes over a number of years have shown that heat from the sun is one of the most potent factors that affects durability. High temperatures and large variations, seasonally or daily, at the roofing level are detrimental to the longevity of roof membranes. Reducing the extremes of temperature change will reduce the incidence of damage to membrane systems. Covering membranes with materials that reflect ultraviolet and infrared radiation will reduce damage caused by u/v and heat degradation. White surfaces reflect more than half of the radiation that reaches them, while black surfaces absorb almost all. White or white coated roofing membranes, or white gravel cover would appear to be the best approach to control these problems where membranes must be left exposed to solar radiation.[8]
If all urban, flat roofs in warm climates were whitened, the resulting 10% increase in global reflectivity would offset the warming effect of 24 Gigatonnes of greenhouse gas emissions, or equivalent to taking 300 million cars off the road for 20 years. This is based on the fact that a 1,000-square-foot (93 m2) white roof will offset 10 tons of carbon dioxide over its 20 year lifetime.[9] In a real-world 2008 case study [10] of large-scale cooling from increased reflectivity, it was found that the Province of Almeria, Southern Spain, has cooled 1.6ºC over a period of 20 years compared to surrounding regions, as a result of polythene-covered greenhouses being installed over a vast area that was previously open desert. In the summer the farmers whitewash these roofs to cool their plants down.
When sunlight falls on a white roof much of it is reflected and passes back through the atmosphere into space. But when sunlight falls on a dark roof most of it is absorbed and converted into much longer wavelengths that we call "heat" which cannot pass back through the atmosphere because they are absorbed by the greenhouse gases. The atmosphere is transparent to sunlight but opaque to heat, which is why white roofs help cool the planet and dark roofs warm the planet. [11]
Cool roofs, on the other hand, offer both immediate and long-term benefits including:
Reduced building heat-gain, as a white or reflective roof typically increases only 5–14 °C (10–25 °F) above ambient temperature during the day
Savings of up to 15% the annual air-conditioning energy use of a single-story building[6]
Extended service life of roofs
Improved energy efficiency of roofs, especially when there isn't adequate insulation provided in the roof envelope
Improved thermal comfort in buildings that do not have air conditioning
Reduced air pollution and greenhouse gas emissions, as well as a significant offsetting of the warming impact of greenhouse gas emissions.[7]
Research and practical experience with the degradation of roofing membranes over a number of years have shown that heat from the sun is one of the most potent factors that affects durability. High temperatures and large variations, seasonally or daily, at the roofing level are detrimental to the longevity of roof membranes. Reducing the extremes of temperature change will reduce the incidence of damage to membrane systems. Covering membranes with materials that reflect ultraviolet and infrared radiation will reduce damage caused by u/v and heat degradation. White surfaces reflect more than half of the radiation that reaches them, while black surfaces absorb almost all. White or white coated roofing membranes, or white gravel cover would appear to be the best approach to control these problems where membranes must be left exposed to solar radiation.[8]
If all urban, flat roofs in warm climates were whitened, the resulting 10% increase in global reflectivity would offset the warming effect of 24 Gigatonnes of greenhouse gas emissions, or equivalent to taking 300 million cars off the road for 20 years. This is based on the fact that a 1,000-square-foot (93 m2) white roof will offset 10 tons of carbon dioxide over its 20 year lifetime.[9] In a real-world 2008 case study [10] of large-scale cooling from increased reflectivity, it was found that the Province of Almeria, Southern Spain, has cooled 1.6ºC over a period of 20 years compared to surrounding regions, as a result of polythene-covered greenhouses being installed over a vast area that was previously open desert. In the summer the farmers whitewash these roofs to cool their plants down.
When sunlight falls on a white roof much of it is reflected and passes back through the atmosphere into space. But when sunlight falls on a dark roof most of it is absorbed and converted into much longer wavelengths that we call "heat" which cannot pass back through the atmosphere because they are absorbed by the greenhouse gases. The atmosphere is transparent to sunlight but opaque to heat, which is why white roofs help cool the planet and dark roofs warm the planet. [11]
Cool Roofs
Cool roofs are the roofs that can deliver high solar reflectance (the ability to reflect the visible, infrared and ultraviolet wavelengths of the sun, reducing heat transfer to the building) and high thermal emittance (the ability to radiate absorbed, or non-reflected solar energy).[1] The benefits associated with cool roofs include reduced cooling energy load, reduced air pollution and greenhouse gas emission, and improved human health and comfort. Cool roofs may extend the roof service life and help mitigating the urban heat island effect.[2] Cool roofs achieve cooling energy savings in hot summers but can increase heating energy load during cold winters.[3] Therefore, the net energy saving of cool roofs varies depending on climate. However, a 2010 energy efficiency study [4] looking at this issue for air conditioned commercial buildings across the USA found that the summer cooling savings typically outweigh the winter heating penalty even in cold climates near the Canadian border giving savings in both electricity and emissions. Without a proper maintenance program to keep the material clean, the energy savings of cool roofs can diminish over time due to albedo degradation and soiling.[5]
While it is true that cool roofs are mostly associated with white roofs, they come in a variety of colors and materials and are available for both commercial and residential buildings. Note that today's "cool roof" pigments allow metal roofing products to be EnergyStar rated in dark colors, even black. They aren't as reflective as whites or light colors, but can still save energy over other paints.
While it is true that cool roofs are mostly associated with white roofs, they come in a variety of colors and materials and are available for both commercial and residential buildings. Note that today's "cool roof" pigments allow metal roofing products to be EnergyStar rated in dark colors, even black. They aren't as reflective as whites or light colors, but can still save energy over other paints.
Tuesday, August 21, 2012
Roofing contractor gets 6 months for employing illegal workers
Roofing contractor gets 6 months for employing illegal workers | TheGazette
Who will roof houses if the Mexican's don't. People on welfare and unemployment?
Who will roof houses if the Mexican's don't. People on welfare and unemployment?
Monday, August 20, 2012
American WeatherStar Dealer
The American WeatherStar Roof Coatings Division is a full line supplier of commercial roof coating systems that are sprayed in place for a seamless, durable, elastomeric seal. Our products are ideal for coating commercial and industrial buildings, roofs and walls. Our coating products can be used for flat roof repair, to stop leaks, cool a building's interior, or simply for preventive roof maintenance. We can even offer a complete system warranty (Labor & Materials) on just about every type of roof substrate. These flat roof coatings are perfect for metal roof leak repair and best of all, when used for preventive maintenance, our coatings can qualify for a 100% IRS tax deduction the first year! Please contact us for a free survey to see if your roof substrate is a good candidate for one of our roofing products and we will have an independent American WeatherStar Dealer in your area survey your roof at no cost to you and offer a full recommendation to meet your needs and budget. If you are just researching commercial flat roofing options at this time, please contact us to receive a complete information packet about our quality coatings and energy efficient roofing systems.
What are the different types of flat roofing??
Membrane roofing is a type of roof|roofing system for buildings. It is used on flat or nearly flat roofs to prevent leaks and move water off the roof. Membrane roofs are most commonly made from synthetic rubber, thermoplastic (PVC or similar material), or modified bitumen. Membrane roofs are most commonly used in commercial application, though they are becoming increasingly more common in residential application.
==The Advantages Over Asphalt Flat Roofing Systems==
These three application types of membrane roofing show distinct advantages over the previously more common flat roofing method of asphalt and gravel. In asphalt and gravel application, it can be very difficult to create a proper seal at all seams and connection points. This can cause many roofs to leak early in its lifespan, and require much more maintenance. When installed correctly, newer materials are either seamless, or have seams as strong as the body. This eliminates much of the leakage concerns associated with flat roofing systems.
Repairs for asphalt and gravel roofs can be hard, mainly because it is difficult to locate the exact point of a leak. Newer systems can be patched relatively easily, and breaks and leaks are easier to locate.
Originally asphalt roofing required a layer of gravel above it for two reasons. First, asphalt with direct exposure to sunlight degrades much faster, mainly due to the expansion and contraction throughout a day, and also the damage created by Ultraviolet UV rays. Second, asphalt needs weight above to hold it down, because it sits on the top of a building, instead of being attached to it. Each of the three newer types of membrane roofing systems contain materials that resist expansion and contraction, as well as reflect much of the UV rays. Also, because these membranes either lack seams or have strong seams, what expansion and contraction does occur does not create leaks and breaks at these seams. These newer roofing systems are also attached directly to the top of a building, which eliminates the need for excess weight above.
==Types==
"Synthetic Rubber" (Thermoset) – This type of membrane roof is made of large, flat pieces of synthetic rubber or similar materials. These pieces are welded together at the seams to form one continuous membrane. The finished roof’s thickness is usually between 30 and 60 mils(thousandths of an inch) (.75mm to 1.5mm).
'''Thermoplastic Membrane''' – This is also similar to synthetic rubber, but the seams do not form a continuous membrane. The 'lap' seams are bonded (melted or dissolved) with heat or solvents, and can be as strong as the rest of the membrane.
'''Modified Bitumen''' – This type of roofing is an evolution of asphalt roofing. It is made from asphalt and a variety of modifiers and solvents. There are several ways of connecting pieces of this material. In a heat application process the seams are heated to melt the asphalt together and create a seal. There is also a cold-applied adhesive application process, and some self-adhesive forms of this system. This material is also referred to as APP or SBS.
'''Thermoplastic Membrane''' – This is also similar to synthetic rubber, but the seams do not form a continuous membrane. The 'lap' seams are bonded (melted or dissolved) with heat or solvents, and can be as strong as the rest of the membrane.
'''Modified Bitumen''' – This type of roofing is an evolution of asphalt roofing. It is made from asphalt and a variety of modifiers and solvents. There are several ways of connecting pieces of this material. In a heat application process the seams are heated to melt the asphalt together and create a seal. There is also a cold-applied adhesive application process, and some self-adhesive forms of this system. This material is also referred to as APP or SBS.
==The Advantages Over Asphalt Flat Roofing Systems==
These three application types of membrane roofing show distinct advantages over the previously more common flat roofing method of asphalt and gravel. In asphalt and gravel application, it can be very difficult to create a proper seal at all seams and connection points. This can cause many roofs to leak early in its lifespan, and require much more maintenance. When installed correctly, newer materials are either seamless, or have seams as strong as the body. This eliminates much of the leakage concerns associated with flat roofing systems.
Repairs for asphalt and gravel roofs can be hard, mainly because it is difficult to locate the exact point of a leak. Newer systems can be patched relatively easily, and breaks and leaks are easier to locate.
Originally asphalt roofing required a layer of gravel above it for two reasons. First, asphalt with direct exposure to sunlight degrades much faster, mainly due to the expansion and contraction throughout a day, and also the damage created by Ultraviolet UV rays. Second, asphalt needs weight above to hold it down, because it sits on the top of a building, instead of being attached to it. Each of the three newer types of membrane roofing systems contain materials that resist expansion and contraction, as well as reflect much of the UV rays. Also, because these membranes either lack seams or have strong seams, what expansion and contraction does occur does not create leaks and breaks at these seams. These newer roofing systems are also attached directly to the top of a building, which eliminates the need for excess weight above.
Call today so we can show you all the advantages of single ply roofing.855-217-ROOF
Architects are extremely intelligent beings.
Architects are extremely intelligent beings and far superior to the rest of us. All Architects know how to stretch the laws of physics beyond that which is possible. They know how to make two objects occupy the same space and how to make roof trusses magically float in mid air unsupported. It is hoped that one day they will share their knowledge with those of us that have to make their silly doodles work. Until that day, do not worry if the roof leaks or falls down. As long as it looks nice on the front of Architects weekly magazine,that’s the main thing.
Friday, August 17, 2012
Flat Roof Leaks
If a leak does occur on a flat roof then damage often goes unnoticed for long periods of time during which water penetrates and soaks the decking and any insulation and/or structure beneath it. This can lead to expensive damage from the rot which often develops and if left can weaken the roof structure. There are also various health risks to people and animals breathing the mould spores: the severity of this health risk remains a debated point.
One problem with maintaining flat roofs is that if water does penetrate the barrier covering (be it traditional or a modern membrane) it can travel a long way before causing visible damage or leaking into a building where it can be seen. Thus it is not easy to see where it is leaking in order to repair it. Once underlying roof decking is soaked it often sags causing a further collection or puddling of water in that area and the problem worsens.
Another common reason for failure of flat roofs is lack of maintenance of drains whereby gravel, leaves and debris block water outlets (be they spiggots, drains, downpipes or gutters), thus water cannot drain away and builds up. This causes a pressure head of water (the deeper the water the greater the pressure) which can 'push' more water into the smallest hole or crack. In colder climates, puddling water can freeze into ice which breaks up the roof surface as it expands whilst it freezes.
An important consideration in tarred flat roof quality is differentiating what many call simply 'tar' into rather different products: tar or pitch (which is derived from wood resins), coal tar, asphalt and bitumen. Some of these products appear to have been interchanged in their use and are sometimes used inappropriately, as each has different characteristics, for example their ability or not soak into wood/boards, their anti-funghal properties and their reaction to exposure to sun and weather and varying temperatures.
Modern flat roofs can use single large factory made sheets (e.g. EPDM synthetic rubber) and these are usually of excellent quality, though unfortunately one-piece membranes are seldom seen used in practice. Rather, strips of EPDM, PVC, tar paper etc. which are widely available in rolls (typically of 900 mm or 1200mm width) are bonded together in either hot or cold seaming processes on the roof during the fitting process where labour skill and training play a large part in determining the quality of roof protection attained. Reasons for not using excellent one-piece membranes include practicality and cost-saving:- on all but the smallest of roofs it can be difficult to lift a huge and heavy membrane to the roof (a crane or lift is required) and if there is any wind at all it can be difficult to control and bond the membrane smoothly and properly to the roof.Detailing of these various systems also plays a part in success or failure: In some systems ready-made details (such as internal and external corners, through-roof pipe flashings, cable or rooflight flashings etc.) are available from the membrane manufacturer and can be expediently and well bonded to the main sheet, whereas with materials such as tar papers this is usually not the case - a fitter has to make these shapes up on-site or on the roof and success depends largely on their levels of skill, enthusiasm and training - results can vary hugely.
Metals are also used for flat roofs, these can be made from lead (welded or folded-seamed), tin (folded, soldered or folded-seamed) or copper. These are often expensive options and vulnerable to being stolen and sold as scrap metal.
Flat roofs tend to be sensitive to human traffic. Anything which produces a crack or puncture in the waterproofing membrane can quite readily lead to leaks. Flat roofs can fail, for example; when subsequent work is carried out on the roof, when new through-roof service pipes/cables are installed or when plant such as Air Conditioning Units are installed. A good roofer should be called to make sure the roof is left properly watertight before it is left. In trafficked areas, proper advisory/warning signs should be put up and walkways of rubber matting, wooden or plastic duck-boarding etc. should be installed to protect the roof membrane. On some membranes even stone or concrete paving can be fitted. For one-off works, old carpet or smooth wooden planks for workers to walk or stand on will usually provide reasonable protection.
Tuesday, August 14, 2012
The 10 Biggest Hiring Mistakes in Hiring Sales People
Hiring salespeople is an inexact science, but the fact remains that too often critical errors are made that compromise the process. Mis-hires continue to be one of the most costly problems in our industry, yet in order to address the problem it first needs to be acknowledged.
The 10 biggest mistakes that companies make when hiring salespeople are:
Recruiting under deadlines (rushing the process)
Failure to document the process or record responses & observations
Establishing the wrong qualifications (what are you looking for?)
The interview being conducted by the wrong person
Overselling the position or opportunity
Underselling the position or opportunity
Failure to track, accumulate and document essential statistics
Failure to handle applicants fast enough (getting bogged down in minutia)
Looking in the wrong places. Not looking in enough places
Failure to conduct background checks
Recruiting under deadlines (rushing the process)
Failure to document the process or record responses & observations
Establishing the wrong qualifications (what are you looking for?)
The interview being conducted by the wrong person
Overselling the position or opportunity
Underselling the position or opportunity
Failure to track, accumulate and document essential statistics
Failure to handle applicants fast enough (getting bogged down in minutia)
Looking in the wrong places. Not looking in enough places
Failure to conduct background checks
Monday, August 13, 2012
Consumer Magazine Rates Shingles
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| These are the top 3 Shingles in the market and how they were rated by Consumer Magazine Tamko 59 Owens Corning 58 GAF 59 |
Thursday, August 9, 2012
Tuesday, August 7, 2012
Sunday, August 5, 2012
Advantages of TPO
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| 60 Mill TPO Tuttle ISD |
TPO membranes are installed fully-adhered, mechanically-attached or ballasted. Fully-adhered means that the roof is "glued" to the substrate using a special adhesive.
What actually happens is the glue creates a chemical bond with the membrane.
Notice the custom flashing's
TPO systems to seal around odd shaped penetrations or a small cluster of Penetrations. The TPO Penetration Pocket fits penetrations up to 3 ½” (90 mm)in diameter
What Makes a Good Commercial Roofing Company?
Being good at something, no matter what it is, takes time, experience and willingness.
A good commercial roofing company will have been in business for more than just a few years and will have a permanent place of residence with an address and telephone number. We have been in business since 1990 and during that time we have experienced just about every roofing scenario. We take every opportunity while working on a roof to become better at what we do. As technology evolves, we make sure we stay on top of industry trends so that we are providing the best possible solutions to our customers, and because we have over 60 years of combined experience, we are able to apply a wealth of knowledge into every roofing project we take on.
Any good commercial roofing company should perform work that adheres to the guidelines of the National Roofing Contractors Association, the leading authority in the roofing industry as well as being certified by the manufacture of the products they recommend. We install a wide variety of GAF Products. Our specialty is TPO Thermal Plastic Polyolefin and PVC (Polyvinyl Chloride because of their longevity, energy efficiency and there low maintenance costs. We also install a wide variety of all types of Modified Bitumen. As a certified Master Select contractor, we can offer you any one several different warranties.
We are dedicated to helping you defy the elements with the most extensive offering of low slope roofing solutions available on the market today. We have developed proven processes to ensure the roofing project has been planned, materials ordered, received and staged for proper installation. We are committed to exceeding your expectations. Our qualified team of roofing experts will quickly and comprehensively access any company's roofing problem and present the most effective means of repairing it.
We provide an excellent opportunity for our customers to be proactive in preventing possible future roofing problems by becoming part of a semi-annual Preventative Maintenance Program. A preventative maintenance agreement can save you time and money in the long run.
We appreciate your business and look forward to a continuing relationship of trust and security.
Wednesday, June 20, 2012
Monday, April 23, 2012
Saturday, April 7, 2012
Things Every Homeowner Should Know When Choosing a Roofing Contractor
10 Things Every Homeowner Should Know When Choosing a Roofing Contractor
When was the last time you thought about your roof? Unless you currently have a roof leak, the answer is probably never. That’s pretty normal. You see your front door, your exterior paint and your landscaping every day and that’s where most people focus their weekend chores and repairs. But your roof has possibly the most important job in the whole house. Your roof is the only thing standing in between your family and the elements and it’s your homes main defense against structural damage, deterioration, property loss and a huge loss in your home’s value. Especially in this “buyer’s market,” you can’t take any chances with a minor roof problem ruining your ability to sell your home when it’s time. Buyers may overlook a squeaky front door, dingy paint job and a shaggy lawn, but any sign of water damage is a huge stop sign.
10 Rules of Roofing to help guide your decision process when the time comes for a new roof. These tips are especially import now as we approach storm season and the storm-chasing roofers will soon follow.
Before you call a contractor
1.Snoop around – Do your own visual inspection of your roof for missing shingles, discolored areas, raised or wavy areas, or shingles that are rolling up. All of these can be signs that your roof is near the end of its useful life. Then check in the attic for any visible daylight or separations around a chimney, vent pipes, skylights or any element that penetrates your roof. Use a flashlight to look for staining or other signs of water damage. The contractor you choose will perform the same inspection (with a more trained eye of course) and you’ll be better prepared to discuss his findings.
2.A little knowledge is a good thing – Learn a little bit about the roofing business. Your local home improvement center will have a basic guide to roofing, probably just a page or two. Get to know what the most common steps in roofing are and which may require special skills. When you understand the basic process to repairing or replacing a roof, you are better equipped to negotiate with your contractor and watch out for both short cuts and unnecessary expenses.
Before you sign a contract
3.Check for insurance – Get the name of the insurance carrier and policy number and call them to make sure the policy is current and that it covers the company and its workers. If you allow an uninsured worker on you roof and they get injured, you are liable.
3.Check for insurance – Get the name of the insurance carrier and policy number and call them to make sure the policy is current and that it covers the company and its workers. If you allow an uninsured worker on you roof and they get injured, you are liable.
4.Check certifications – Each state may require different levels of certification for roofing contractors. Some are very strict and some states require no certification at all. Make sure your contractor is properly certified to do the work by either the National Roofing Contractors Association, the National Association of the Remodeling Industry, or any other state or local organization. It’s also a good idea to check with the Better Business Bureau for any complaints and how long they have been in the business.
5.Check your neighbors – If your friends and neighbors have recently replaced or repaired their roof, see who did the work and ask for a review. Every reputable roofing contractor should be able to provide references from your area and you should talk to at least one of them.
6.Shop it – Take a look at ratings and prices of different roofing products and know what the contractor is going to use so you can lock in a price upfront. Know the work they will do. Find out who will actually do the work. Is it the company making the bid or another subcontractor you haven’t interviewed?
7.Get it in writing – Sam Goldwyn of MGM fame once said, “a verbal contract isn’t worth the paper it’s written on.” He was right. Get your detailed contract in writing including project scope, timeline, materials to be used, who will do the work, contingencies, payment schedule and EXACT COST. Estimating software and training have made it possible for contractors and insurance companies to take the guesswork out of estimating. Never agree to pay more than one third at project inception.
8.Permits – Let your contractor get your job permitted. If you pull the permits then you and not the contractor are responsible for insuring that the work is completed to code. Plus, if the contractor holds the permits, the building inspector becomes your advocate and intermediary.
9.Get a lien release – This is an often-overlooked step in the process but it can save you a lot of headaches down the road. A lien release protects you in case you pay your contractor for materials but he doesn’t pay his suppliers. Most of the contractor nightmare stories involve a knock at the door from a supplier you’ve never heard of who is putting a lien on your house for the cost of your shingles.
10.Post work inspection – Let your contractor know from the outset that you will bring in an independent inspector to declare the job is complete, sound, and up to industry/manufacturer standards before you release final payment.
If the contractors you are interviewing start squirming when you discuss your “10 rules of roofing,” then they probably aren’t the right company for you. Remember that an uneducated consumer who is only looking for the lowest price is the easiest target for an unscrupulous roofing contractor.
Friday, March 16, 2012
Wednesday, February 22, 2012
Tuesday, February 21, 2012
Wednesday, February 1, 2012
Friday, January 20, 2012
The proper choice of a cover board can help resist the forces that threaten roof-system durability.
The proper choice of a cover board can help resist the forces that threaten roof-system durability.
A roof is a big investment—and it protects an even bigger investment in the building and its contents. That’s why durability in any roofing system translates directly into lower total cost of ownership. Durability is more than just toughness. It’s also the ability to protect contents and occupants from fire, water and noise.
Several forces challenge roof-system durability, including:
Several forces challenge roof-system durability, including:
• Fire
• Moisture exposure
• Sound intrusion
• Impact from hail and foot traffic
• Wind uplift.
Properly chosen cover boards can help reduce the effects of all these forces. Fire resistance is the sum of the components Fire resistance in a roofing system comes from all roof components working together—and the choice of cover board can either enhance or detract from fire resistance. Where the decking, insulation or membrane is combustible, a noncombustible cover board can contribute to a lower-risk fire rating.
Lower-risk fire ratings can both ensure code compliance, and help reduce insurance premiums. For example, roofing systems that qualify for a Class 1 rating from Factory Mutual Research (FM) will qualify for the lowest insurance rates from FM affiliated insurance companies. A UL Class A rating (for external fire exposure) can also help qualify for lower premiums. Those lower premiums are a direct payback for
enhanced fire durability. (For more details on fire ratings of roof assemblies with cover boards, refer to
the DensDeck® Technical Guide.)
Properly chosen cover boards can help reduce the effects of all these forces. Fire resistance is the sum of the components Fire resistance in a roofing system comes from all roof components working together—and the choice of cover board can either enhance or detract from fire resistance. Where the decking, insulation or membrane is combustible, a noncombustible cover board can contribute to a lower-risk fire rating.
Lower-risk fire ratings can both ensure code compliance, and help reduce insurance premiums. For example, roofing systems that qualify for a Class 1 rating from Factory Mutual Research (FM) will qualify for the lowest insurance rates from FM affiliated insurance companies. A UL Class A rating (for external fire exposure) can also help qualify for lower premiums. Those lower premiums are a direct payback for
enhanced fire durability. (For more details on fire ratings of roof assemblies with cover boards, refer to
the DensDeck® Technical Guide.)
Wind uplift is a durability factor In extreme wind situations, wind-generated forces trying to lift the roofing off a building can be hundreds of pounds per square foot (psf). For even moderate wind conditions, roofing systems must be tested to withstand at least 60 psf before
failure, and 90 psf ratings are becoming a default in many applications that use Construction Specifications Institute (CSI) or American Institute of Architecture (AIA) master specifications. As with fire ratings, higher wind-uplift ratings may qualify for lower insurance premiums, and cover boards can contribute to wind-uplift durability. Here’s how: Where the membrane is held down by a continuous coating of adhesive, wind performance relies on the strength of the substrate. If the membrane is bonded directly to a fragile, low-density insulation layer, uplift forces can literally pull the insulation apart. A cover board with good tensile strength, installed between the membrane and the insulation, can prevent this. Mechanical fasteners penetrate the insulation and transfer uplift forces directly to the rigid deck.
failure, and 90 psf ratings are becoming a default in many applications that use Construction Specifications Institute (CSI) or American Institute of Architecture (AIA) master specifications. As with fire ratings, higher wind-uplift ratings may qualify for lower insurance premiums, and cover boards can contribute to wind-uplift durability. Here’s how: Where the membrane is held down by a continuous coating of adhesive, wind performance relies on the strength of the substrate. If the membrane is bonded directly to a fragile, low-density insulation layer, uplift forces can literally pull the insulation apart. A cover board with good tensile strength, installed between the membrane and the insulation, can prevent this. Mechanical fasteners penetrate the insulation and transfer uplift forces directly to the rigid deck.
Cover boards can also enhance durability in roof systems using mechanical fasteners rather than adhesives. In these systems, wind forces may try to rock the fasteners sideways, and the fasteners can lose compression or even back out of the decking. A suitable cover board under the membrane can keep the fasteners from rocking and protect the roof. Impact resistance withstands hail and foot traffic
The third force that tests roof system durability is impact from hail or foot traffic. Without a protective cover board, impact damages both the insulation and the membrane. The rigid cells of low-density insulation foam don’t recover from impact compression, so crushing reduces the R-value and damages the bond with the insulation board’s facing layer. Insulation compression also forces the membrane to stretch, which makes it more vulnerable to puncture. Insulation damage from hail impact is obvious. The impact damage caused by foot traffic is less immediately noticeable, but more pervasive. Foot traffic, wheelbarrows and equipment carts all generate loads that compress unprotected insulation and threaten the membrane with stretching and punctures. Traffic damage comes first during installation of the roof itself, then from installation and maintenance of HVAC, PV systems, and other roof-top equipment. After construction, routine building maintenance continues the stress. This is why some roofing system warranties place a limit on the amount of roof-top traffic that can be tolerated. Cover boards can protect against both hail and foot traffic damage. Installed between the membrane and the insulation, a rigid cover board with good compressive strength distributes impact to prevent insulation compression. Cover boards also improve puncture resistance by supporting the membrane.
Moisture exposure can be external or internal. Moisture exposure can occur in the form of rain or dew during installation, as well as roof leaks once the roof is completed. Moisture can also come from condensation or migration within the assembly. All roofing components are to be protected from moisture exposure before, during and after installation. If components are inadvertently exposed to moisture, the ability to retain physical properties when the product dries is a measure of its durability and contribution to sustainability. Many products, like wood fiberboard, perlite and other materials containing organic components are physically changed by exposure. They swell, distort and are weakened. Products with a gypsum core like DensDeck Roof Boards may retain their physical properties and integrity when allowed to dry after incidental wettings. However, you should consult the product manufacturer for additional information concerning the moisture resistance and recommendations for each product.
Information presented in this article concerning roofing systems and assemblies is presented as a general guide for illustration purposes only. Please consult the appropriate system manufacturer or design authority for system specifications and instructions for any specific system or assembly. Georgia-Pacific Gypsum does not provide roofing design services. 2011 Georgia-Pacific Gypsum LLC. All rights reserved.Originally published 10/04. Rev 2/11.GP-TM Lit. Item #102271.
Friday, January 13, 2012
Take A Look at This Stone Coated Roof
Take a look at this stone coated steel job just finished in the DFW area. Stone Coated Steel DECRA®, the original stone coated steel roofing system, represents a perfect blending of over 50 years of research and practical experience. Offering the ultimate in performance and engineering design is what DECRA Roofing Systems are all about.
Are your priorities in focus?
- 50 – Year Warranty
- Lightweight
- Fire Safe
- Freeze/Thaw Resistant
- 120 mph Wind Warranty
- Class 4 Impact Resistance
- High Performance
Thanks to our own salesman Dave Patterson for doing a good. Call Dave today for a free estimate on your roof. 817-739-3000
Tuesday, January 10, 2012
What is the Best roofing product and why?
There is NO real "Best" roofing system without understanding the facility, the owner and his/her expectations/needs, and providing a quality installation as a roofing contractor. All systems seem to have their place in the market if you learn the necessary information. Now, with that said, I said each system has it's place in the market, not every manufacturer. Definitely not every roofer. Building owners should do more due diligence on their preferred contractors. It has been my experience the ones that do usually buy from me or a more qualified contractor at a higher price because they are getting more. With every roof system, and contractor, it's in the details. Not just the flashing details, but the entire system. From design, etc., top to bottom, every nut and bolt. Everything needs to fit. I always get a big smile on my face when I meet a customer who is considering buying a new roof and a Single Source warranty or the Manufacturer's warranty is the first comment from my potential customer. That is opening a door wide open on who the owner has been listening to. Then it's a matter of getting the customer back on the real solution of their building and the roof asset the owners money is buying. Get the proper expectations from the roof system that fits the budget and needs of the customer. Explain to the customer what will be expected of them to get the most life expectancy from their system of choice and why. Everyone doesn't need or want a bulletproof system. However, we as professionals need to stop selling the cheapest thing on the block to people willing to buy quality. If you are truthful in your sales process, and sincere in actually trying to help the owner make the right decision, they will buy from you and get what they are paying for. A good roof that fits their needs and with the correct expectations of the roof system. If this were a perfect world and that were to happen, ALL systems would be good systems. We need to use them properly.
Reprint from:
Rob WilkieSunday, January 8, 2012
Cool Roof Coatings
There are alot of different thoughts on this subject. "Cool Roof" coatings do several things for you as a product or products. First off, the "Cool Roof" coatings as a category are very diverse, I would suggest first looking at the warranties. If you read things such as, excludes ponding water, excludes animal fats, greases, solvents," I would suggest you may have choosen the wrong product, especially in a commercial venue, as you are not always sure who your requirements might be...2nd, they seal and protect the roof, 3rd, they extend the life of the roof membrane and normally they sustain the original membrane and keep them out of the landfills...As far as, when to do it, it is never too soon to get the right "Cool Roof" system on your commercial roof system. Anything you can do to reflect the UV off of the roof is going to increase the life of the roof and cool the inside temperature of the building, this is always good...One thing people tend to do is let roof maintenance go, until it starts to leak...that is like saying you think you need to rotate your tires on your car, when the tires start blowing out!
If you don't keep an eye on your roof and do some preventative maintenance, it will ALWAYS cost you more money...As the old saying goes, "Pay me now or pay me later"...I would say that a good time to initially look at doing a "Cool Roof" coating is about 5 years after the new built up roof has been installed...Unless you live in California, where when replaced, you must install a "Cool Roof" as part of your re-roofing project. It will need to be recoated about every 5-10 years after that, generally...Yearly maintenance should be done and can save you lots of internal damage to the building and even more money, due to dry rot, mold, etc...The only other thing you should know about most coatings is that they are normally temperature sensitive...They usually need to be applied at between 55-65 degrees and above, and need to cure for 24 hours and not drop below that temperature...So they are sensitive to the time of year that they should be installed...I tell you this so you don't have a desperate roofing contractor, push the envelope and try and install it in cold weather and cause premature failure or peeling...If you have any other questions feel free to give us a call...
If you don't keep an eye on your roof and do some preventative maintenance, it will ALWAYS cost you more money...As the old saying goes, "Pay me now or pay me later"...I would say that a good time to initially look at doing a "Cool Roof" coating is about 5 years after the new built up roof has been installed...Unless you live in California, where when replaced, you must install a "Cool Roof" as part of your re-roofing project. It will need to be recoated about every 5-10 years after that, generally...Yearly maintenance should be done and can save you lots of internal damage to the building and even more money, due to dry rot, mold, etc...The only other thing you should know about most coatings is that they are normally temperature sensitive...They usually need to be applied at between 55-65 degrees and above, and need to cure for 24 hours and not drop below that temperature...So they are sensitive to the time of year that they should be installed...I tell you this so you don't have a desperate roofing contractor, push the envelope and try and install it in cold weather and cause premature failure or peeling...If you have any other questions feel free to give us a call...
Gerald A. Yerian
Friday, January 6, 2012
Things to think about while looking for a great commercial roofing company:
Every business building ought to endure roofing maintenance now and then. This really is to maintain its function and, more important, to ensure the water tightness. A great roofing system delivers energy-saving opportunity; the level of roofing materials and also the type of design play a vital role in lowering temperatures (much less using cooling system).
Whether your business needs a brand new roof or simply to do a little roof maintenance, it's really very important that it is done by a well-known reputable business roofing contractor. You need to be sure that the funds you are allocating for roofing will be well-spent.
So, where to find the correct commercial roofing company? What area of certification you need to underscore in order that the roofing contractor you are using the services of is capable of providing the best program feasible?
Careful research is the actual key.
As there are lots of firms out there offering commercial roofs services, it may be a hardship on you to select the one which may offer you the level of service you will need. Through a little bit of investigation, anyone surely will find very good leads from which to choose. The Internet can help in your research.
Things to think about while looking for a great company:
1. The length of time the corporation throughout business
2 The type of roofing systems offered by the company
Whether your business needs a brand new roof or simply to do a little roof maintenance, it's really very important that it is done by a well-known reputable business roofing contractor. You need to be sure that the funds you are allocating for roofing will be well-spent.
So, where to find the correct commercial roofing company? What area of certification you need to underscore in order that the roofing contractor you are using the services of is capable of providing the best program feasible?
Careful research is the actual key.
As there are lots of firms out there offering commercial roofs services, it may be a hardship on you to select the one which may offer you the level of service you will need. Through a little bit of investigation, anyone surely will find very good leads from which to choose. The Internet can help in your research.
Things to think about while looking for a great company:
1. The length of time the corporation throughout business
2 The type of roofing systems offered by the company
3. Does it provide type of services you may need?
4. The roof service fees – or they be sensible?
5. Your service warranty
6. References
7. Reputation as well as honours acquired with the company
8. Their approach to energy-saving along with environmental advocacy
9. The types of materials along with the layout they use – is it productive?
10. Does the organization offer you roofs support on your roof, can you see pictures before & after
4. The roof service fees – or they be sensible?
5. Your service warranty
6. References
7. Reputation as well as honours acquired with the company
8. Their approach to energy-saving along with environmental advocacy
9. The types of materials along with the layout they use – is it productive?
10. Does the organization offer you roofs support on your roof, can you see pictures before & after
Thursday, January 5, 2012
TPO Cover Existing Roof
This is a TPO roof we just finished. We installed over the old roof, saving the owner the expense of a tear off. The weight of TPO makes is a great cover over product. TPO withstands ponding water so on older roofs the ponding is not critical.
Restore Your Metal Roof
The fastest, most cost effective, easiest way to fix metal roof problems is to use a system that includes metal roof coatings. When properly installed, they solve leak problems, reduce cooling costs, and create an easy-to-maintain waterproof system.
Our metal roof coating systems offer a complete solution with a substantially lower investment than replacing your entire metal roof. In addition the metal roof coating system creates a highly reflective seamless membrane which will greatly reduce the metal roof surface temperature and energy cost.
Apply appropriate base coat
Apply appropriate top coat in a cross-hatch technique using the application rates specified.
STEP 1: STOP THE LEAKS
The first step in a metal roof restoration is to stop the leaks. This is done by replacing rusted out
panels, refastening loose panels and treating the source of leaks by sealing up holes and seams
in the roof system.
Remove all strip fasteners and replace with the next larger size
Exposed fasteners need to be sealed with a thick-bodied sealant or acrylic mastic
Lap seams may originally have been installed with butyl sealants or pressure tapes
installed in the seams. There may have been no sealant at all. Reseal all seams with
acrylic mastic and reinforcing material – each manufacturer has a special detail to fix
laps and seams.
Standing seams are typically resealed with sealant only.
Projections, pipes & vents need to have the bases reflashed according to manufacturers’
specifications and details.
STEP 2: PREPARE THE SURFACE
Make sure the coating manufacturer has accurate information on treating the surface finish of
the metal panel.
Galvanized steel and aluminum prep requirements are different from a painted surface
and may require an special primer or cleaner.
Painted Kynar (polyvinylidene fluoride) factory-applied finishes are slick, especially
when new and may require mechanical abrasion similar to that required on automobile
painted surfaces.
Rusted steel will require removal of the rust and application of a rust inhibiting primer.
STEP 3. CHOOSE AND APPLY THE RIGHT COATING
The choice of a coating can involve maximum protection, roof cooling benefit, and/or
aesthetics.
Some reflective coatings are Energy Star or CRRC compliant and meet special reflectivity
specifications. White elastomerics are significantly more reflective than aluminum coatings, but
do not hold up as well to ponding water (if that is an issue). Some municipalities and electric
utilities are now offering rebates if white coatings are used. Check with local building codes to
make sure your coating meets local requirements even if you are coating an existing building.
In terms of color, white and aluminum finishes have become the industry standard. However,
additional colors (tints from the white elastomeric product) are now available, with tan and grey
being the most frequently used. Ask the manufacturer if there are special colors available for an
extra charge.
Water based coatings are typically less expensive, more environmentally friendly, are solvent
free and are easy to clean up. Solvent based coatings tend to offer better adhesion, better UV
resistance, higher elongation and tensile strength, dry faster and are more resistant to ponding
water.
ADVANTAGES OF RECOATING
Coatings save $$$$$ over remove & replace
Fast and Quiet: coating applications minimize disruptions and downtime
Safer: coating restoration doesn’t expose building contents to leaks during work
Better protection: Reflective coatings both waterproof and reduce roof surface
temperatures, reducing stress from expansion and contraction and decreasing
oxidization and rusting
Lower cooling costs: White surfaces can dramatically cool the roof surface
Aesthetically more pleasing: Reflective coatings improve the look of a building, from a
rusty look to a uniform, like-new appearance
Dan White is the Technical Product Manager for APOC Roofing & Waterproofing, the
commercial coatings division of Gardner Industries.
Wednesday, January 4, 2012
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