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: Dry within 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
  • Sealant Adhesive Volume : 2.5 Ltr
  • 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 : Dry within 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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€23.95 Incl. 20% VAT

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Thompsons High Performance Roof Seal Black 2.5Ltr is rated 4.3 out of 5 by 52.
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
Rated 5 out of 5 by from So easy to use. This roof seal is so easy to brush on and brushes wash out in water. I certainly waterproofed the old felt on my shed roof.
Date published: 2016-10-03
Rated 5 out of 5 by from It really works, Tried a few different products over the years but this one works, give it a nice heavy coat, it dries really quick and does the job. This is the third time I have used it and no complaints. will use it again.
Date published: 2016-07-20
Rated 4 out of 5 by from easy to work with I have used Thompson's roof seal a few times now and prefer it to the bitumen based products and find it does not crack easily.It has good flexibility and can be applied easily with a paint brush and allows you to get the material into cracks or suspect areas.It is much cheaper at Screwfix than other DIY outlets.
Date published: 2016-02-23
Rated 5 out of 5 by from Great product I've used this product several times and it never lets me down. Easy to apply, dries quickly and has good performance. I stick with what I know and keep using the products that work well. This product is highly recommended.
Date published: 2016-01-18
Rated 5 out of 5 by from Great waterproofing product The product was very easy to use and after two coats we now have a water tight office roof. Product was used on asbestos sheet roofing so has enabled us to avoid roof replacement.
Date published: 2015-12-09
Rated 5 out of 5 by from Does what is says on't tin Great product - very easy to apply if surfaces are prepared well. Seems to give protection for a long time.
Date published: 2015-12-01
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