Polyureseal BP is made strictly for indoor use. Polyureseal BP can be applied over the following surfaces: Wooden floors both soft and hardwood species and some vinyl type flooring (testing required). Polyureseal BP should not be applied over the following surfaces: Concrete countertops, Formica type countertops, ceramic or porcelain tile, ABS or PVC plastics, glass, fiberglass, laminate flooring. SURFACE PREPARATION: Clean surfaces of dirt, grease, mildew and oil. Previously sealed surfaces should be sanded to promote adhesion (all gloss must be removed). Wet sanding is recommended. Surface should be completely dry before application. Always spot test for adhesion over prior coatings. APPLICATION: Before using, roll the Safecoat Polyureseal BP container well, then apply as is. Stir product thoroughly every 20 minutes during application. Apply with a brush, pad or airless sprayer DRYING/CURING TIME: Sandable after 2 - 4 hours, and recoatable after 4 - 8 hours. Humid conditions will extend these cure times significantly. The product will continue to cure and become harder over a 2 week period or longer if humid. It's best to wait to move furniture for at least 7-10 days and then another week for full activity. Normal application conditions include a dry surface, access to fresh air flow, humidity 35-65%, and temperatures above 55 degrees F. WATER BASED/COVERAGE: One gallon covers approximately 350 SF. This is the highest quality water-based clear matte finish available today. Its exceptional durability and abrasion resistance, coupled with very low odor and very low VOC make it the clear alternative to conventional solvent and water-based polyurethanes. Also available in gloss.