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Product is not suitable for use on wooden substrates

Thompsons Water Seal Clear 5Ltr (52043)

5Ltr. Provides superb weather protection for bricks, mortar and concrete. Forms a transparent, waterproof barrier.

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£17.99INC VAT (£3.60/Ltr)
Was £19.99 Save £2.00 (10%)

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Rated 4.2 out of 5 by 37 reviewers.
  • 2016-07-29 T11:28:55.551-05:00
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Rated 5 out of 5 by Best for waterproofing Been using this for years and yet again doing the job . Used it on a single skin brick garage wall which was letting in rain when rain was driving against the wall but after two coats with a sheep skin roller stopped problem completely 9 Jul 2016
Rated 4 out of 5 by Easy to apply Very easy to apply, brushes can be cleaned in water, and it seems to work! Throw a bucket of water over the untreated wall, and its absorbed into the brickwork. Same experiment a day after treating the wall, the water just beads and runs off. 5 Jul 2016
Rated 5 out of 5 by JUST THE JOB Always use when replacing a sink or bath to prevent future problems with the floor or walls so you get a chance to mop up before it through the ceiling below ! Generally useful sealant and clearly does the job . 12 Jun 2016
Rated 5 out of 5 by TH Water Seal Went on well as instructed. Not had enough rain to see how well it works, but I'll see next winter. 12 Jun 2016
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22 Questions  22 Answers

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23 Jul 2016
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Southport
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, Builder/Multi Trade
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Answer: 
Thanks for your question, unfortunately we couldn't recommend the product is used so close to the pond as its safety for use in such areas has not been fully assessed.
25 Jul 2016
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16 Jul 2016
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manchester
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Answer: 
Thanks for your question, we don't recommend the use of Thompson's Water Seal on roofing tiles, sorry.
18 Jul 2016
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i used one that was in shed it did not work but it was old about about 10 years old plus
4 Jul 2016
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swindon
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Answer: 
Thanks for your question, this is very much dependent on storage conditions, the current formulation is water based and therefore needs to be protected from frost. If you bought the product over 10 years ago this won't be the same as the current formulation however it is unlikely to still be effective after this length of time.
5 Jul 2016
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I have damp in a conservatory dwarf wall and intended treating with Thompsons Water Seal. However, it stated do not use on pre painted walls or walls you intend to paint. Can you recommend a product which will seal pre painted walls?
1 Jul 2016
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Belfast
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Answer: 
Thanks for your question, unfortunately we don't have a product can can be used prior to or after painting, sorry.
5 Jul 2016
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22 Jun 2016
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Gilfach
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Answer: 
Thanks for your question, the Water Seal can be applied to damp surfaces but a really wet wall would prevent the Water Seal from penetrating and so it wouldn't be an effective treatment for a wet wall.
27 Jun 2016
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  • 2016-07-29 T11:14:32.234-05:00
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Specification
Brand Thompsons
Colour Clear
Pack Size 1
Pack Size 1
Pieces in Pack/Case 1
Product Type Water Seal
Sealant Adhesive Volume 5 Ltr
Total Product Weight 5 kg

Curing time: . Coverage: .

Downloads

Safety Data Sheet (COSHH)