Mapei Mapesil T 100% Silicone Sealant with enhanced adhesion is a profession grade sealant specially formulated for use in heavy traffic and expansion/movement joints. Mapesil T exceeds both ASTM and ANSI standards and helps prevent mold and mildew. Great for use in interior, exterior, wet and dry applications including: pools, steam rooms, bath tubs, sinks, countertops, and vanities.Color matched to MAPEI's color paletteRated for heavy-traffic and expansion/movement jointsExcellent flexibility and elongation for use in both change-of-plane and joint applications in tile or stonework Great for wet or dry, interior or exterior, commercial or residential applications Adheres to most ceramic tile, porcelain, natural stone, glass, masonry, concrete, brick, wood, aluminum, fiberglass, vinyl, plastic, and properly prepared copper and brass