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Thompsons High Performance Roof Seal Black 2.5Ltr (46708)

Highly flexible black coating that outperforms bitumen-based products. Resists cracking during expansion and contraction. Rainproof in 6 hours. No primer required. Will last up to 10 years.

  • 2 Applications Required
  • Suitable for Roofing
  • Long Lasting
  • Model No: 30144X
  • Low Odour
  • UV & Weather-Resistant

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£19.99INC VAT (£8.00/Ltr)

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Thompsons High Performance Roof Seal Black 2.5Ltr is rated 4.4 out of 5 by 40.
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Rated 1 out of 5 by from WASTE OF MONEY FOR FLAT ROOFS My dad has sworn on this stuff for so long I thought I'd give my garage roof a few coats to make it last. Bearing in mind that it's a flat roof which is around 5-10 years old, the felt is starting to crack in places. Nice dry day came and I wacked a coat on. All ok and really happy with it up to inspecting it a few days after it had rained. Most older flat roofs collect standing water, that's why flat roofs are so notorious. Where this pool of water had collected, the paint had gone back to a grey colour and had started to create tiny pockets underneath the paint! This just rubbed off with the back of my hand easily. Being perplexed I rang the help line to which I was told that it had done that because I'd only put one coat on and that this product isnt best used for flat roofs with standing water! I was told to "build it up" with thinned paint and re coat with full strength product. As I understand although I'm not a painter, paint is microns thick if applied right so trying to level off a 1 metre sq 5mm deep concaved bit is going to take some filling. So tonight I have pressure washed it all off the roof which was a total waste of time and money. I have since bought some isoflex which looks to be a better longer lasting solution (which I'll review when done) So in essence this product is ok for maintaining flat roofs (what it says on the front of the tin) but only if there's no standing water and its brand new. Pretty disappointed
Date published: 2017-08-10
Rated 5 out of 5 by from Thompsons Roof Seal Thompsons High Performance Roof Seal Black 2.5Ltr (46708). This paint is great, dries a matt black looks good, easy to put on, I even purchased another tin to paint a 8ft x 4ft sterling board and made a climbing wall for my kids (climbing studs purchased elsewhere), thats been up months now in all weather, kids love it and still looks new. Great product.
Date published: 2017-08-10
Rated 5 out of 5 by from Flat roof repair We used this for a small temp repair and it worked a treat, until we were able to re-felt roof with non-rip felts. very good.
Date published: 2017-06-08
Rated 5 out of 5 by from Roof sealer This is a great sealer for any type of flat roof , easy to apply and dries quite quickly . At at very reasonable price , well recommended.
Date published: 2016-12-12
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I get a huge puddle on my garage roof so I guess there must be an indentation there. Would this product be OK to strengthen the asphalt once it has dried out?

Asked by: Rugger
Thank you for your query. This product is intended to be applied as a full coating to the whole surface, indentations can be addressed by applying multiple coats to the area and embedding scrim tape into the layers as they are built up.
Answered by: Thompson's Product Expert
Date published: 2017-08-09

My roof has got mossy and the gravel has come loose, am i ok to apply this over the exisitng stones once i have swept any loose stones off? Will i then need to reapply some new stones?

Asked by: thomas1
Thank you for your enquiry. I am pleased to advise this product would be suitable for your application. Please ensure that the surface is sound and that any loose material have been removed. After application do not apply any chippings though as these could pierce the film and lead to deterioration and water ingress.
Answered by: Thompson's Product Expert
Date published: 2017-08-13

can this product be used on a fiberglass roof that flexes slightly in high winds?

Asked by: Jamesthesound
Thanks for your query, I am sorry but we do not supply anything suitable for use on fibreglass.
Answered by: Thompson's Product Expert
Date published: 2017-07-24

can the surface area be walked on once treated?

Asked by: selfwood
Thank you for your enquiry. The product can be walked on but not regularly, access for maintenance is fine though.
Answered by: Thompson's Product Expert
Date published: 2017-07-17

my roof has 13° slope and slated. My intention is to strip it, coat it with this instead of felt, then replace the tiles. Would this work?

Asked by: gingerboyd
Thank you for your enquiry, I am sorry but we would not recommend this product for the application described.
Answered by: Thompson's Product Expert
Date published: 2017-08-12
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Specification
Brand Thompsons
Coating & Finishes Drying Time Dries in 6 Hours
Colour Black
Manufacturer Guarantee 10 Year Manufacturer's Guarantee (T&Cs Apply)
Model No 30144X
Pack Size 1
Pieces in Pack/Case 1
Product Type High Performance Roof Seal
Resistant Type UV & Weather-Resistant
Suitable Application Suitable for Roofing
Total Product Weight 3840 kg
Volume 2.5 Ltr

Curing time: Dries in 6 Hours. Coverage: 2 sqm per litre.

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Safety Data Sheet (COSHH)