Dow Corning 791 Weatherproofing Silicone Sealant Brown 310ml

Product code: 17296


Dow Corning 791 is a one part, weatherproofing silicone sealant that gives excellent unprimed adhesion to most porous and non-porous construction substrates including brickwork, masonry, timber, PVC, glass and most metals.


  • Highly flexible.
  • Joint movement capability +/- 50%.
  • Excellent weathering characteristics, including resistance to ozone, UV radiation and temperature extremes.
  • Conforms to ISO 11600-F&G-25LM and also meets ISO specification 9047 class 50%.
  • 20-30 minutes working time.
  • Fast cure – tack free in 2 hours.
  • Application Temperature Range -25 to +50°C
Technical Data:

We offer a free 48 hour (2 working days) delivery service to most areas of the UK.*

If you require a faster delivery please contact us on and we will be able to help you.

We want you to be happy with your purchase, however if you change your mind you can return it to us under our 30 Day Money Back Guarantee.*

*For full details or our delivery and returns policies please refer to our Customer Services section or contact us on