Dow 791 Weatherproofing Silicone Sealant White 310ml (33876)

£ 6.29INC VAT

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Dow 791 Weatherproofing Silicone Sealant White 310ml (33876)

Low modulus silicone provides excellent, unprimed adhesion to both porous and non-porous substrates. Suitable for weather sealing and expansion joints.

  • For Fixing, Sealing & Binding
  • Mould & Mildew-Resistant
  • Low Odour & Solvented
  • No Primer Required
  • Apply in Dry Conditions Only

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View all: Dow Weatherproof Sealants

£6.29INC VAT (£20.29/Ltr)

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Dow 791 Weatherproofing Silicone Sealant White 310ml is rated 4.8 out of 5 by 37.
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Rated 5 out of 5 by from Dependable Always use this stuff. Great performance, good price
Date published: 2020-06-18
Rated 5 out of 5 by from Duck I have been using this product for as long as I can remember. It's a well-established brand that never lets you down.
Date published: 2020-06-15
Rated 5 out of 5 by from Happy fish and snails Bought this to renew the seal round the plug and the overflow of an old Belfast sink I use for a fish pond. Job done and on came the rain. Was worried the sealant may not have worked but 24 hrs later took a chance, filled the pond and everything was sealed perfectly. Fish and pond snails back in and delighted to be back in their home.
Date published: 2020-06-12
Rated 5 out of 5 by from A Good Sealant This Dow Corning product is easier to work with than comparable Unibond products in my opinion. It draws out of the tube easily and is workable with a good sheen finish. Just be careful not to disturb it after 5 minutes or so because it "skins up" and wrinkles.
Date published: 2020-06-08
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Would this be suitable to seal the external panels on a static caravan?

Asked by: KTaylor

How do I open it?

There is no hole that I can see for the caulking stuff to come out at, and I can find nothing there to provide a way for opening it to be able to use it?
Asked by: OldWoman

Ok for boat use? Is it affected by salt water?

Asked by: Cocat2517

Glazing

Is this suitable for sealing conservatory roof glazing to aluminium/pvc bars?
Asked by: deepto
Yes this sealant is suitable for this application, it can be used to both bed the glazing units into the frames and also to weatherseal
Answered by: Dow Product Support
Date published: 2019-11-04

Can this be used as an alternative to Stormguard's Admasik?

Looking to fit a Stormguard threshold, which requires a weatherproof seal between concrete sill and aluminium product. Admastik is no longer available, so could this be used as an alternative?
Asked by: ShearersLad
Dowsil 791 can be used as an alternative to this product. It should be noted however that 791 is a silicone-based sealant while the Admastik is a polymer technology. If you are after a like for like replacement than Geocel 201 is a suitable alternative that utilises the same technology.
Answered by: Dow Product Support
Date published: 2019-11-04
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Specification
Brand Dow
CE Standard (Tested to EN...) ISO 11600-25LM, ISO specification 9047 Class 50%.
Colour White
Label Info 2: Hazard Statements EUH 210 Safety data sheet available on request.EUH 208 Contains. May produce an allergic reaction.
Label Info 2: Hazard Statements EUH 210 Safety data sheet available on request.EUH 208 Contains. May produce an allergic reaction.
Label Info 3: Precautionary Statements P271 Use only outdoors or in a well-ventilated area.
Label Info 5: Hazardous Chemical Content Contains: Methyltrimethoxysilane. This product contains dodecamethylcyclohexasiloxane (D6)
Manufacturer Guarantee 1 Year Guarantee
Model Name 791
Pack Size 1
Parent Colour White
Pieces in Pack/Case 1
Product Type Weatherproofing Silicone Sealant
Sealant/Adhesive Container Type Cartridge
Suitable Application For Fixing, Sealing & Binding
Volume 310 ml

Downloads

Safety Data Sheet (COSHH)