DOWSIL 791 Weatherproofing Sealant

Product Type:

Short Description

A one-part, medium-modulus, elastomeric sealant designed for general weathersealing

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DOWSIL 791 Silicone Weatherproofing Sealant
Neutral, one-part silicone sealant


DOWSIL 791 Silicone Weatherproofing Sealant is a specified, premium performance weather sealing product specifically designed for general glazing and weather sealing in curtain wall and building facades.


Ideal for expansion, connection, perimeter and other movement joints
Neutral cure – suitable for use on coated glass, galvanized steel, masonry and other porous and non- porous substrates
Extension/compression movement capability of up to ±50 percent of the original joint width
Excellent weatherability, virtually unaffected by sunlight, rain, snow, ozone
Excellent unprimed adhesion to a wide variety of construction materials and building components
Ease of application – ready to use as supplied
Excellent rheology, low string upon gunning


One-part, neutral-cure, RTV silicone sealant