There are many different high tech roof restoration technologies available on the market today that can prolong life of the roof membrane. Now, how do you know which restoration system is best options to consider for the building? Let’s look at the following six factors:
One of the first things to consider is compatibility of the roof restoration system with the existing roof membrane. Certain solvent-based products may attack the existing roof assembly, while in other cases, a particular coating may not adhere well enough for long-term reliability. Evaluating the current roof membrane for compatibility with a new coating may immediately narrow down the options. Contact us to assist in determining the best restoration for your roof.
It’s important to ensure the selected roof restoration system will maintain the fire rating of the existing roof assembly. If the roof restoration system does not have the proper approval rating in combination with the existing roof membrane, the resulting roof will not be code compliant. This is often overlooked and can have serious implications. We can surely recommend you the proper restoration solution to ensure code compliance and safety.
Cost, of course, is always a consideration. To be accurately judged, cost must be weighed against the expected life of the restoration, as well as the product or system warranty. For example, aluminum is typically the least expensive to apply, but acrylic and silicone typically have longer warranties. The condition of the existing membrane could impact total installed cost, as preparation for the primary coating material is typically preceded by repair of the existing membrane, surface leveling and other detailing.
The geographic location of the facility will also help determine the best roof restoration system for the structure. For example, in hot climates, white coatings can protect the roof assembly and provide significant energy savings by reflecting UV rays. Silicone coating technology in particular, due to its UV stability, loses less dry mil thickness each year, thus further extending the life of the roof system, as compared to other options. In cold climates with more heating than cooling days, aluminum or gray silicone may be the best choice, since heat absorption during the winter months can offset the advantage of reflectivity in the summer.
Other considerations include the types of weather conditions the roof is likely to experience. For example, if hail is common in the area, you’ll want to choose a higher impact-resistant restoration system such as one surfaced with granules. A polyester fabric reinforced asphalt emulsion foundation coating is another way to add durability and strength within restoration coating systems.
Exposure to exhaust
You’ll also want to take into account the types of materials the roof will be exposed to through the building’s exhaust system. These may include chemicals, fats, oils and/or greases. The right roof restoration system will provide resistance to these and other exhaust elements.
Finally, you’ll need to be aware of relevant local environmental requirements. In some parts of the country, cool roofs are mandated to reduce drain on the power grid and help reduce what’s known as the “heat island effect.” Also, if the building is an odor-sensitive facility such as a school or hospital, you’ll need to be mindful of low VOC requirements. Silicone coatings are a good choice in these situations, since they are low VOC and emit no contaminants or chemicals of concern. Water runoff should also be considered. Many coatings are not approved to allow water to be safely collected for irrigation or even drinking.