Seal-Tack AF is a tough, ﬁre-resistant, washable, indoor coating used over thermal insulation in areas of high humidity and elevated temperature. As a waterborne acrylic, Seal-Tack AF is specially formulated to resist mold, fungus and mildew growth on its surface, protecting the surface of the insulation. Seal-Tack AF can be used with reinforcing fabric as a sealing system to cover interior insulation, for sealing the edges of cut ﬁberglass insulation or it can be used for binding glass ﬁbers on installations requiring additional fungal resistance. The unique physical properties allow for a brush, roller or spray application providing a uniformly coated surface. Exterior applications require coating over the Seal-Tack AF with Seal-Tack GO.