Want to Know about Roof Coatings?

A roof coating is a layer or a film. It is a monolithic, fully adhered, fluid applied on the top surface of the roof. Some of the roof coating materials can be polyurethane, and acrylic paints; single-ply roofing sheets made of rubber, plastic, or PVC; clay or concrete tiles; and metal, available in both natural and dark-colored sheets. Some can be applied with brushes and some are applied with the help of tools and equipment. This layer has elastic properties that allow it to stretch and return to their original shape without damage.

Roof coating dry film thickness varies between 3 dry mils to more than 40 dry mils (here one dry mil = single coat of paint). We can say that a roof coating is actually a top layer of a composite roof membrane and underlying system. As such, the roof coating is the topmost layer used to protect the roof membrane, impact of sunlight (both infrared and ultraviolet (UV)), rain, hail, hot, cold, and physical damages.

Whenever roof coats are applied correctly on the roof, these coats are not seen and also these roof coatings are used to solve roof leaks on any type of roofs. Some coatings like field-applied reflective coatings will keep the roof cool and extends the life of the roof up to 15 to 25 years.

For example in hot summer, the temperature on the uncoated roof around “175°F”. When white coating is applied to the same roof the temperature reduces to “79°F”. So, we can say that cool roof coatings can reduce the temperature of rooftop, lowers carbon emissions on the rooftop, and reduces the cost to air conditioners. Using these coatings we can reduce the effect of global warming.

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