Lumber-Seal is the worlds first and only natural, Tricopolymer barrier liquid. Lumber-Seal is Non-toxic, Non-flammable, Non-corrosive to metals, Non-leaching, has no voc's and is a superior Bio-protectant. Mold cannot grow on or underneath it's surface! Dries fast and clear with tremendous coverage, easily going 800-1,200 sq.ft. per gallon! Can be applied by brush, roller, sprayer or dip method. Seals all types of wood, concrete, cinder block, drywall and most all porous surfaces, protecting numerous building materials from moisture and environmental damages. Moisture issues are inevitable and unavoidable, so pretreat and protect with Lumber-Seal and eliminate these headaches.