The roof layer is a monolithic, fully-protected roofing membrane. It has an elastic property that allows it to stretch and return to its original shape without damage.
The typical dry film roof coating thickness varies from paint film thickness (plus or minus 3 dry miles) to over 40 dry miles. This means the roof layer really becomes the top layer of the composite roofing membrane and the underlying system. Thus, the roof layer is the uppermost layer of protection for the membrane, receiving the effects of sunlight (both infrared and ultraviolet (UV), rain, hail and physical damage.
Roof coatings should not be confused with the deck linings. The deck layer is a traffic cushion - designed for waterproofing areas where pedestrian traffic (and in some cases vehicles) is expected. The roof coating will only be waterproof on the substrate but will not be resistant to any type used by people or vehicles (such as sidewalks, terraces, sundeck, restaurants, etc.).
Video Roof coating
Benefits
The roof coating is smooth and when installed properly, it can break roof leaks on almost any type of roofing material.
There are exceptions: "professionals do not recommend using a cold coating on the existing shingle.This technique can cause moisture problems and water damage because the coating can inhibit normal shingle drying after rain or dew accumulation, allowing water to condense and gather under the shingle.
The reflective roofing applied in the field can extend the useful life of virtually any roof substrate that keeps the roof surface cool and provides a level of protection from the sun and the weather.
However, the roof layers of shingles and the roof of the composition built require more attention. Director of contracting services of the National Roofing Contractors Association (NRCA) has stated that "The roof industry is aware of a number of issues that could have negative consequences for field applications of asphalt roofing roofing systems Anyone considering these types of applications should be aware of these concerns so they can consider them against benefits claimed in promotional coating products. "
Roof coatings can add 25 years to the service life of the roof and reduce the amount of discarded roofing material that ends up in landfills. The infrared image on the right shows 175 Â ° F (79 Â ° C) on the uncoated (black) portion of the modified asphalt roof. The coated part (white) is 79Ã, Â ° F (26Ã, Â ° C). Field studies show that a cold roof coating can lower roof temperatures and reduce air conditioning bills.
Maps Roof coating
Limitations/Risks
Most flat roofs are not perfectly tilted, causing water to mix in some areas, especially around drains and scuppers. Many roof coatings are not rated or guaranteed for "puddles", and thus may fail prematurely if exposed to standing water for long periods of time. Serious consideration should be given to the performance and limitations of the selected layer. Some manufacturers will guarantee their coatings include a pool of water. Typically, manufacturers for acrylic roof coatings do not include warranties for pond water, while some manufacturers of polyurethane and silicone roof coatings will.
Apps
Roof coatings are easy to install. Smaller roofs in good condition and serviceable can be a do-it-yourself weekend project (DIY). Larger roofs with pond water leaks and problems should be coated by qualified professionals. Additional roof coating products, such as foams or coatings designed for stitching, may be required under the main coating layer. Additional coating products are used to strengthen problem areas that are damaged or leaked.
Tools and supplies
High pressure-proof spray equipment, pressure washers with turbo, roofing equipment and basic painting tools such as brushes, rollers, putty knives, and scaffolds.
References
Source of the article : Wikipedia
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