Dow Corning 791 Weatherproofing Silicone Sealant White 310ml Product Code: 33876

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


  • Low Odour &


ISO 11600-25LM, ISO specification 9047 Class 50%.
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Additional Information
Technical Specification
  • Brand : Dow Corning
  • Sealant Adhesive Volume : 310 ml
  • Product Type : Weatherproofing Silicone Sealant
  • Model Name : 791
  • Volume : 310 ml
  • Colour : White
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
  • CE Standard (Tested to EN...) : ISO 11600-25LM, ISO specification 9047 Class 50%.
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€7.35 Incl. 23% VAT

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Dow Corning 791 Weatherproofing Silicone Sealant White 310ml is rated 4.9 out of 5 by 16.
Rated 5 out of 5 by from Says what it does Everything it says it does pretty much , easy to apply
Date published: 2019-02-19
Rated 5 out of 5 by from Great product As you would expect from Dow, this is a great product and they know it by the price (lost one star for this) - Dow's technical support is also up there with the best in my experience - definitely worth using them if you are the least bit unsure of what product in their range to use.
Date published: 2018-10-14
Rated 5 out of 5 by from better price than.. Better price than a big DIY place that charges £10. Very easy to work with. Really impressed. Window now sealed.
Date published: 2018-05-02
Rated 5 out of 5 by from Just the stuff!! I've used this sealant and found it to be good, so far. Not applied that long ago so cannot report on 'reliability'. Not the cheapest but, in reading Dow Corning literature online, I find it to be superior in several respects to the less costly sealants. Good bonding and easy application means I shall buy again. Recommended.
Date published: 2017-08-20
Rated 5 out of 5 by from Excellent sealant Used both the black and the white versions on everything from sealing in the sunroof frames on my Land Rover to sealing baths and windows. Sticks to pretty much everything. Highly flexible. Highly recommended.
Date published: 2017-08-10
Rated 4 out of 5 by from Around the Door/Window I went with the 791 Dow Corning option - primarily for its expansion/flexibility qualities. Need to go around the window frame and doorway. This is always needed when the weather changes.
Date published: 2017-01-30
Rated 5 out of 5 by from dow corning 791 Excellent product ,easy to apply and tool to make weatherproof seal. Highly recommended.
Date published: 2015-06-28
Rated 5 out of 5 by from Dow Corning W/Proof Sealant Very easy to apply; dried quickly with a good finish. Used it to stop water coming through a crack in concrete floor. Had a heavy downpour last night and no signs of water seepage so far.
Date published: 2015-06-13
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