DOWSIL 790 Silicone Building Sealant

Manufacturer: DowSil
Product Type: Vertical Sealants

Short Description

A one-part silicone formulation that cures in the presence of atmospheric moisture to produce a durable, fire-resistant, flexible and ultra-low-modulus silicone rubber building joint seal.

Quantity Needed

DOWSIL 790 Silicone Building Sealant

Ultra-low-modulus sealant for new and remedial construction joint sealing applications


DOWSIL 790 Silicone Building Sealant offers outstanding unprimed adhesion to masonry and is particularly effective for sealing expansion and control joints, precast concrete panel joints, Exterior Insulation and Finish Systems (EIFS) joints, curtainwall joints, mullion joints, stone pavers, and many other construction joints. When used in accordance with Dow application and testing recommendations, the sealant forms a durable, flexible, watertight bond with many common building materials, including combinations of stone, concrete, masonry, granite, marble, aluminum, painted substrates, and glass.


Excellent performance even in building joints that experience extreme movement
Suitable for new and remedial construction
Extension/compression capability of +100/-50 percent
Excellent weathering properties and resistance to sunlight, rain, snow, and temperature extremes
Excellent unprimed adhesion to masonry, concrete substrates
Easy application over a wide temperature range


Ultra-low-modulus, one-part, neutral-cure silicone sealant