For high-stress/high movement areas around windows & doors, all siding types, interior trim, and crown molding, masonry, marble, porcelain, glass and ceramic tile. Fills gaps up to 3/4 in x 3/4 in Mildew and rust resistant. Resists yellowing and discoloration. Can be painted when thoroughly dry, a minimum of 4-6 hours with latex or oil based paint. Meets performance requirements of federal specification TT-S-00230C. Type II Class B and ASTM Spec. C920 Class 12.5.