Mapesil T is a professional-grade, 100% silicone sealant, designed for use on various substrates. It is ideal for high traffic areas and for movement and expansion joints. It forms a perfect color scheme with the Mapei grout range. Its 100% silicone formula makes it an ideal candidate for both indoor and outdoor use, and for installations in both dry places and places exposed to moisture. It can also be used in pools and spas.