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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: €15

Free delivery on all orders over €70.00

Click here to see information on our delivery charges and times



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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€23.45 Incl. 20% VAT

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Thompsons High Performance Roof Seal Black 2.5Ltr is rated 4.2 out of 5 by 67.
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
Rated 4 out of 5 by from Easy application Not a bad product....remember to give tin a good mix beforehand and definitely apply second coat...if applying over felt make sure felt is secure to prevent movement as I found out.. ..easy to apply and I found the overall product satisfactory. ..
Date published: 2018-05-09
Rated 5 out of 5 by from just the job easy to use, quick drying, good colour and washes out easily
Date published: 2018-05-01
Rated 1 out of 5 by from Not the best Bought 2 tins of this, have put 2 coats on new wooden roof, heavy drips of rain still coming through knots in wood, will put another couple of coats on to see if it improves, if not will buy another product to see if I can rectify problem.
Date published: 2018-04-25
Rated 5 out of 5 by from Did the job... Used this on my flat roof after discovering cracks in the roofing felt, which lead to a leak over my rear door....repaired the cracks with mastic and overpainted with roof seal.... It's now rained twice, and it hasn't leaked....I doubt it will last ten years, but will keep the receipt & check!....
Date published: 2018-04-23
Rated 5 out of 5 by from Roof Sealer I used this on a concrete flat roof. It is just a bit thicker than normal gloss paint. So it is easily painted on. It goes on grey and drys black making it easier to apply. The next day it rained and there was not a single leak. Great product.
Date published: 2018-03-22
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