#800 Elastic Cement technical bulletin

The technical bulletin for Product #800 Elastic Cement describes a water based elastomeric flashing, patching and sealing compound made with acrylic rubber resins. It is a one-page PDF with the code TEC800 1508A printed on it. The product is listed in white or black, and the black version dries faster in cold weather.

The physical properties section gives total solids of 65 to 70% by weight, weatherability listed as 10 to 20 years, elongation greater than 500%, flexibility below freezing, tack-free time of one hour, and a cure of one to two days through dehydration. The minimum application temperature is 50°F, and the product is listed as non-flammable with no asbestos fibers.

The application section describes a three-course method with brush or trowel at 1/8 inch per 100 square feet, embedding polyester fabric in the first coat, and a second coat at 1/16 inch. It states not to apply the compound at a thickness of 3/16 inch or greater in one pass. The uses listed include flashing for cold process and mineral surfaced built-up roofs, repairs to mobile home roofs, seams and screws on metal roofs, and gutters and ducts.

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