Dow Corning® 758 Silicone Weather Barrier Sealant

Dow Corning® 758 Silicone Weather Barrier Sealant, which meets ASHRAE 90.1 mandatory requirement 5.4.3.1 for building envelope sealing, minimized air leakage, brings long-term durability and ease-of-use for sealing challenging weather barrier substrates.

Dow Corning® 758 Silicone Weather Barrier Sealant brings long-term durability and ease-of-use for sealing challenging weather barrier substrates. Its superior, more consistent adhesion performance and compatibility outperform traditional sealants. And with ±25% movement capability, architects benefit from increased design flexibility.
Dow Corning® 758 Silicone Weather Barrier Sealant is designed to deliver unparalleled adhesion to window flashing and fenestration materials. It is one of only a very few sealants on the market that can adhere – unprimed – to polyethylene and give a long-term solution that does not break down over time.
For even greater flexibility, Dow Corning® 758 Silicone Weather Barrier Sealant is approved for use with Dow Corning® 123 Silicone Seal, giving an even better water and moisture barrier.
Dow Corning® 758 Silicone Weather Barrier Sealant meets ASHRAE 90.1 mandatory requirement 5.4.3.1 for building envelope sealing, minimized air leakage.
Dow Corning® 758 Silicone Weather Barrier Sealant is supplied in 20 fl oz. sausages and applied using standard dispensing equipment and tools, so waste generation on-site is minimized.
The VOC content of Dow Corning® 758 Silicone Weather Barrier Sealant is 50 g/L less water, which is less than 250 g/L required by SCAQMD Rule 1168 for Architectural Sealants.