Dowsil 791 Silicone Sealant - Brown 310ml

Dowsil 791 has a working time of approximately 20 to 30 minutes and becomes tack-free in about 30 minutes under standard conditions.

It provides excellent adhesion to most exterior building surfaces, including concrete, masonry, aluminum, steel, and painted surfaces.

The application temperature range for Dowsil 791 is from -25°C to +50°C.

Yes, it conforms to ISO 11600-25LM and ISO 9047 class 50.

Uncured sealant can be cleaned up with a damp cloth or an appropriate solvent. Cured sealant typically needs to be removed mechanically.

The sealant has a joint movement capacity of ± 50%.

While primarily designed for exterior weatherproofing, it may be used indoors if the substrate and environmental conditions are suitable and compatibility is confirmed. Always refer to specific project requirements.

Ensure the substrate is thoroughly cleaned, dry, and free from contaminants like dust, oil, or old sealant. Reapply after proper surface preparation.

Work in smaller sections and apply/tool the sealant promptly within the 20-30 minute working time. Ensure environmental conditions are within the recommended application temperature range.

Practice using a caulking gun on scrap material. Ensure the nozzle is cut correctly for the desired bead size and apply steady, consistent pressure.

Verify that the application temperature is within the specified range (-25°C to +50°C) and that the sealant is not being applied too thickly. Ensure adequate air circulation for curing.