Dowsil 791 Weatherproofing Silicone – 310ml / 600ml CTN & Singles


Net: £11.40 - £205.00

Dowsil 791 Weatherproofing Silicone – 310ml / 600ml CTN & Singles


Net: £11.40 - £205.00

DOWSIL 791 silicone weatherproofing sealant is a single-component silicone sealant designed for use on building facades, weather sealing or general glazing. This product is designed to effectively withstand the effects of expansion or contraction during changes in temperature or humidification that could lead to blistering, peeling, cracking.

DOWSIL 791 benefits

  • Neutral cure
  • Low odour
  • Ozone resistant
  • Resistant to ultra-violet radiation
  • Withstands extreme temperatures

Surface preparation for DOWSIL 791

Make sure the surfaces to be sealed are clean, dry, in good condition free from grease. Remove all dust and debris from the surface using a clean, lint-free cloth. Clean non-porous surfaces with DOWSIL R40 Universal Cleaner beforehand and clean porous surfaces with a steel brush or sanding disc.

Size – Single 600ml Sausage / CTN 20 x 600ml / CTN 12 x 310ml

1-2 day delivery 

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Additional information

Highly flexible

Silicone substance can adapt around joints and fittings


Tack-free in just 2 hours


Resistance to UV light, extreme temperatures, and ozone

No primer needed

Provides unprimed adhesion to many surfaces

Colour & Quantity

Black Single 600ml Sausage, Black CTN 20 x 600ml, White CTN 12 x 310ml, Black CTN 12 x 310ml, Brown CTN 12 x 310ml, Grey CTN 12 x 310ml, Limestone CTN 12 x 310ml, Stone CTN 12 x 310ml, Bronze CTN 12 x 310ml, Buff CTN 12 x 310ml, Anthracite CTN 12 x 310ml, Translucent CTN 12 x 310ml