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Thompsons High Performance Roof Seal Black 2.5Ltr Product Code: 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


Curing time: Dries in 6 Hours. Coverage: 2 sqm per litre.
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Safety Data Sheet
Additional Information
Technical Specification
  • Resistant Type : UV & Weather-Resistant
  • Brand : Thompsons
  • Product Type : High Performance Roof Seal
  • Suitable Application : Suitable for Roofing
  • Volume : 2.5 Ltr
  • Total Product Weight : 3840 kg
  • Model No : 30144X
  • Coating & Finishes Drying Time : Dries in 6 Hours
  • Colour : Black
  • Pack Size : 1
  • Manufacturer Guarantee : 10 Year Manufacturer's Guarantee (T&Cs Apply)
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery service up to 3 working days: €8.95

Free delivery on all orders over €70.00

Click here to see information on our delivery service



Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


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€25.95 Incl. 23% VAT

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Thompsons High Performance Roof Seal Black 2.5Ltr is rated 4.3 out of 5 by 72.
Rated 4 out of 5 by from Top stuff Have used this product at a previous home so I didn’t hesitate in buying some for my new home.
Date published: 2018-10-19
Rated 5 out of 5 by from Great item, does what it says Great item, needed two cans for the area I needed to cover
Date published: 2018-10-07
Rated 5 out of 5 by from Always good got this to patch some holes in the roof until we get a roofing contractor to do a permanent fix. Always good to get the stuff you need when you need it.
Date published: 2018-09-05
Rated 5 out of 5 by from Roof seal Was very easy to use went on very well sealed up flat roof straight away . Makes the roof look good too. Only 3 stars on reliability as only just put on will update as time goes on .
Date published: 2018-08-18
Rated 5 out of 5 by from Easy to use This was my first time using this product and I was pleasantly surprised how easy it was to use. Brushed on the flat roof felt easily and seems to have done the job. You need to apply 2 coats per instructions on the tin but this was no hardship. Brush washed out with detergent water, good as new.
Date published: 2018-08-15
Rated 5 out of 5 by from Best sealer Very good product, with a little imagination the uses could be endless, I will be having more of this.
Date published: 2018-07-31
Rated 5 out of 5 by from Sturdy covering Goes on similar to thick paint, needs 2 coats according to the tin, but i gave it 3 as the concrete soaked it up like a sponge. Still looking good after a few months and cleaned up well after being jet washed from the local bird life using it as a target.....
Date published: 2018-07-08
Rated 4 out of 5 by from Does what it says on the tin I used a few tins of two year ago to repair the worn seams on a 60 year old flat felt roof. Despite a harsh winter and a few weeks of heat wave the repaired areas look as good as the day they were treated. Unfortunately, a couple of new splits had appeared at the edges of the previous repair so I bought another tin and coated over them. The product itself is very easy to use. Remove any moss / growth etc. cut back any loose material and lash it on in a couple of coats. Adheres very well and cleans off your brush with water until it sets to a rubbery flexible but smooth finish. It may be more cost effective in the long run to recover the roof but I can vouch it will stretch out the life of a well worn felt roof for at least a few years (so far).
Date published: 2018-07-08
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