DOWSIL™

DOWSIL™ 791 Weatherproofing Silicone Sealant

Sealant
Silicone

DOWSIL™ 791 Weatherproofing Silicone Sealant is a one part, low modulus, neutral curing weatherproofing silicone sealant designed for both commercial and domestic applications. It provides excellent unprimed adhesion to most porous and non-porous surfaces.

Product info

Benefits

  • Excellent weathering characteristics, including resistance to ozone, UV radiation and temperature extremes
  • Joint movement capability +/- 50%
  • Conforms to ISO 11600-F&G-25LM and also meets ISO specification 9047 class 50%
  • Designed for general glazing, and weather sealing in curtain wall & building facades

Colours

Grey

Brown

Black

Anthracite

Bronze

Buff

Limestone

Stone

Translucent

White

Technical Information

Where to use Exterior
Paintable No
Sizes 310 ml, 600ml
Application method Sealant Gun and Cartridge

Application

Surface Preparation

Ensure that surfaces to be sealed are clean, dry, sound and grease-free. Clean non-porous surfaces with DOWSIL™ R-40 Universal Cleaner, and dry thoroughly with a clean, lint-free cloth before application of sealant. Porous substrates such as concrete, brickwork, mortar etc. must be mechanically cleaned of loose particles using a steel brush, sanding disc or any similiar means.

Application Instructions

Apply sealant to the desired area using a sealant gun. Once finished, the joint should be tooled within 5 minutes of application to ensure good adhesion. For an extensive list of application methods, please consult the Technical Data Sheet.

Clean up

Excess sealant may be cleaned off tools and non-porous surfaces whilst in an uncured state using DOWSIL™ R-40 Universal Cleaner. If sealant is misapplied to porous substrates, it should be left until it is just cured and then removed by peeling, cutting or other mechanical means. Care should be taken not to damage plastic or coated surfaces.

Quantity Estimator

Enter joint dimensions below to estimate number of cartridges required

Calculate

You will require x cartridge

Welcome to Geocel

For over 30 years, we’ve been trusted by the trades to deliver the best quality sealant and adhesive solutions.