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.
Download more information
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.


Click here to see information on returns and cancellation

€30.95 Incl. 20% VAT

Add to Wishlist

More Items to Consider

Loading... Loading...
Thompsons High Performance Roof Seal Black 2.5Ltr is rated 4.4 out of 5 by 86.
Rated 5 out of 5 by from Slap it on! Used to repair flashing / upstand of soil pipe through flat garage roof, used liquid rubber before but it split, can't form a proper flashing so used this, goes on easy, like thick gloss, used a 1" brush, did during hot weather and built up around 4 coats the same day, up to now it's watertight but will see how it goes
Date published: 2019-08-29
Rated 5 out of 5 by from Fixed the leak top job Old roof had creased and started to leak, I thought I would need it all re-doing, gave this product a punt, was really easy to apply and did the trick!
Date published: 2019-08-19
Rated 5 out of 5 by from Leak sorted. My bay was leaking due to heavy rain falling from a blocked gutter above. Fixed the gutter and then applied two coats of Thomson’s roof seal. This went on very easy and looks to have provided an excellent protection. Very well priced.
Date published: 2019-06-27
Rated 5 out of 5 by from Days of Torrential Rain My slate roof was letting in water through the light on the ceiling i applied 2 coats of Thompson 10 Year seal leak sorted.
Date published: 2019-06-14
Rated 5 out of 5 by from Very good Used to seal above upvc conservatory which the weather had eroded original silicon. Application was very easy using small radiator emulsion roller. Consistency was that of a thick gloss and applied generously. Time will tell as to effectiveness hence 4 stars.
Date published: 2019-04-24
Rated 5 out of 5 by from Great Finish The paint was easy to apply, if a little thick. The manufacturer recommends two coats, I applied the first with a brush, the second with a roller. The finish looks great with a uniform smooth surface which is flexible. I gave the product a reliability score of 3* as it's too early to say how the the paint will last, but I'm happy so far. :-)
Date published: 2019-04-24
Rated 5 out of 5 by from Excellent Product Highly recommended. I used Roof Seal for my flat roof. It came up a treat. Excellent product and with a 10 year Guarantee you can't go wrong.
Date published: 2019-03-24
Rated 5 out of 5 by from Excellent Product Execellt product and would recommend to anyone that needs to seal a roof.
Date published: 2019-02-28
  • y_2019, m_9, d_17, h_22
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.13
  • cp_1, bvpage1
  • co_hasreviews, tv_2, tr_84
  • loc_en_GB, sid_46708, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix-ie