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Dow Corning 791 Weatherproof Silicone Sealant Anthracite 310ml (44836)

Low modulus, one-part silicone sealant that gives excellent adhesion to both porous and non porous construction substrates. For weather sealing of curtain walling, building facades and expansion joints.

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£6.29INC VAT (£20.29/Ltr)

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Dow Corning 791 Weatherproof Silicone Sealant Anthracite 310ml is rated 3.8 out of 5 by 6.
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Rated 4 out of 5 by from Go-to sealant Easy to apply and a great colour, ( anthracite) this is my go-to sealant in its various colours. It goes on easily and as far as I can tell so far, lasts well. Gave it a 4 on reliability because I need to check again after it's been in a few years!
Date published: 2017-06-29
Rated 1 out of 5 by from stays wet I don't know if I've got a bad tube, but this is the only colour of silicone sealant I've used that is not elastic and does not set. It applies fine and looks fine, but stays in the same state that it came out of the tube for weeks afterwards, finally going a little stiffer after months, but still very soft and pliable with no elasticity. More like a bituminous mastic than a sealant. Very weak & messy as a result.
Date published: 2017-04-08
Rated 5 out of 5 by from Leaking Roof I bought this to help repair a small portion of my roof that was leaking. Its self explanatory, easy to use and time will tell if its effective.
Date published: 2016-11-24
Rated 5 out of 5 by from SEALANT ANTHRACITE EXCELLENT COLOUR MATCH FOR JOINTING, EASY APPLICATION.
Date published: 2015-03-20
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Dow Corning Sealant to use outside to prevent leak

Colour Anthracite means clear sealant? My application is outside between UPVC window perimeter and wall which is currently leaking after using over 10 years. I want to seal it against weather. Please advise the particular Dow Corning product Thanks
Asked by: Bhunu
Anthracite is dark grey. Whilst Dow Corning 791 may be used in this application, Dow Corning 796 is specifically intended for uPVC frame sealing applications. Unfortunately, neither of these products are available in a clear. If you require a clear silicone for sealing uPVC frames I would recommend Dow Corning 799 clear.
Answered by: DowCorning ProductSupport
Date published: 2017-07-23

is this heat resistant? I want a sealant to fit a chimney cowl

Asked by: Anonymous
Dow Corning 791 is heat resistant up to temperatures of 150°C.
Answered by: DowCorning ProductSupport
Date published: 2017-07-23
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Specification
Brand Dow Corning
Colour Anthracite
Manufacturer Guarantee 1 Year Guarantee
Model Name 791
Pack Size 1
Pieces in Pack/Case 1
Product Type Weatherproof Silicone Sealant
Sealant Adhesive Volume 310 ml
Volume 310 ml

20-30 minutes working time. ISO 11600-25LM, ISO specification 9047 Class 50%.

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