MR.BUILD 2670 is a single part neutral curing silicone weather sealant with un-primed adhesion to most of the porous & non-porous construction materials like concrete masonry, UPVC, glass, EPDM, aluminium, polycarbonate, acrylic plastics, wood etc. The nonstaining property of the product makes it suitable for marble & granite applications. The product is tested & certified for ASTM C 920, Type S, Grade NS, Class 50 & ISO 11600 LM 25.