Before we discuss the importance of coating your EPDM roof, lets learn how EPDM roof membranes age. Over time, the black surface of the EPDM “bakes” in the sun, causing oils to seep out of the material. The membrane starts to lose its flexibility, becoming brittle and less elastic. The diminishing oils also cause the membrane to shrink in width and thickness, allowing punctures and tears to become prevalent across the rooftop. These aging characteristics can be eliminated when the membrane is coated with an acrylic coating for EPDM such as AcryShield A500 or A510.
Using an acrylic coating for EPDM greatly increases the life span of the roof and lowers life cycle costs. AcryShield coatings create a watertight, seamless, fully adhered membrane on top of the EDPM membrane. These coatings have excellent reflectivity, allowing the coating to block destructive UV rays from aging and damaging your roof. The reflectivity also blocks heat transfer into the building, drastically decreasing the energy consumption and costs to cool the interior of the building. The bright white pigments and ingredients in the AcryShield coatings keep the roof surface from reaching high temperatures, allowing the oils to stay embedded in the EDPM membrane. This in turn, keeps the membrane flexible and elastic which is necessary for expansion and contraction to occur without causing tears or leaks.
Acrylic coatings applied over an EPDM membrane act as a thick barrier of protection for the EPDM roof. AcryShield coatings are durable and have superior adhesion; they can be applied over fully adhered or mechanically adhered EPDM systems. In using one of National Coatings EDPM coating solutions, one can qualify for a warranty up to 20 years. As an added bonus, AcryShield acrylic coatings for EPDM have low to zero VOC’s, making them an excellent alternative to high solvent products. The AcryShield products meet rigorous standards set by ASTM, AIA, FM, ICC-ES, UL, ENERGY STAR, CRRC, Miami-Dade County, and LEED.
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