Roof Coating


Roof Coatings, Aluminum

Aluminum roof coatings generally employ an asphalt-type resin containing "leafing" aluminum flakes. The term leafing refers to the tendancy of the aluminum flakes to accumulate at the exposed upper portion of the coating, which is accomplished with specialized coatings on the flakes. Thus the upper surface is a nearly continuous aluminum layer, which protects the asphalt material from the sun's ultraviolet rays. The aluminum flakes greatly enhance the solar reflectance over the 4 % value for bare asphalt, to above 50 % for the most reflective coatings. The industry regards a visible reflectance above 50 % as a bright coating. (For aluminum coatings, it happens that the visible reflectance is roughly equal to the solar reflectance. This is not true in general due to the fact that about 1/2 of the solar energy content is in the invisible near-infrared region.)

Benefits of Elastomeric Roof Coatings

"Cool Roofs," using white elastomeric roof coatings to reflect heat and light away from the roof, provide huge financial benefits in reducing air conditioning costs and equipment wear. Now, the Federal government has created tax incentives for energy-saving improvements, including cool roof coatings. Many states are now offering incentives to contractors and homeowners who use cool roof coatings, so you'll receive another benefit for choosing one of the most effective roof coatings available today.