The Limestone (light-gray) color more closely matches newly poured concrete for good appearance. MasterSeal SL 1 joint sealant is a one-component, self-leveling, UV resistant, exterior grade, non-priming polyurethane sealant designed for creating, sealing and waterproofing all type of concrete and metal expansion joints up to 1-1/2 inch in width.
SL1 requires no mixing and bonds to many materials without a primer, including concrete, masonry, metals, fiberglass, etc.
- One 825ml tube yields about 36 lineal ft. (1/2 inch x 1/4 inch joint).
- 300 psi tensile and 800% elongation.
- Skins over: within 24 hours
- Foot traffic: 3 days
- Full cure: 1 week