This 100% silicone , high performance sealant features superior adhesion to many surfaces. It provides a weathertight seal that remains flexible and is tough enough to stand up to the elements. Ideal for sealing gutters, flashing, downspouts, lap joints, roof vents and siding.
- Permanently flexible/non-shrinking
- Superior adhesion to metal, wood, masonry and vinyl
- Weatherproof and watertight seal
Meets or exceeds performance requirements of Federal Specification TT-S-001543A Class A (COM-NBS) and TT-S-00230C Class A (COM-NBS) ASTM C-920, Type S, Grade NS, Class 25, 13-M82.