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The one-page product data sheet for Acrylic 211, document PDS-121422, describes a 100% acrylic elastomeric coating from American WeatherStar. The sheet lists it for metal, modified bitumen, built-up roofing, single-ply and polyurethane foam roofs, and names Max-Ply, Met-A-Gard and Foam-Gard as systems that use it.
Application limits are 50°F to 110°F ambient and 50°F to 130°F surface temperature. The sheet says the product is designed for positive drainage, and it bars application when the dew point is within 5°F of ambient or when precipitation is imminent before cure.
The technical data table gives 55 ± 2% solids by volume, 233 ± 20% elongation, 273 ± 20 psi tensile strength (ASTM D2370), 4500 ± 500 cps viscosity, 12.1 pounds per gallon, Shore A hardness of 50-55 (ASTM D-2240), reflectivity of .87 and emissivity of .89. It also gives a service temperature of -40°F to 200°F, a 12-month shelf life, a dry time of 2 to 12 hours, and standard colors of white, gray and tan. Packaging is 5-gallon and 55-gallon.
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