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Product Details

For repairing and weatherproofing a variety of roof materials including felt, asphalt, slate, tiles, concrete, brick and corrugated metal. Coverage approx 0.5m2 per litre.

Technical Specification
Brand Thompsons
Colour by dominance Black
Colour by dominance Black
Manufacture ID 30146
Safety Data Sheet click here
Delivery details
Order value: Under £10 £10 & over
Express usually Next Business Day before 6pm £5 Free
Turbo usually Next Business Day before 12 noon £10 £5
Remote areas standard delivery (2-4 days) £5 Free
Order Value: Under £25 Over £25 but less than £75 £75 & Over
£10 £5 Free

Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details
If you are using our Click & Collect service please note the following:
  • Order online or over the phone and collect in branch from 5 minutes later.
  • Ensure you check stock is available for collection at your chosen branch.
  • Check branch opening hours to ensure you have sufficient time to collect.
  • For items not available for same day collection, place order before 8pm Mon-Sat (4pm Sun) and you can collect Next Business Day (Mon-Fri) after 3pm.
  • If we have your mobile number, we’ll send you a text when your order is ready to collect.
Thompsons 10 Year Roof Seal Black 4L is rated 4.7 out of 5 by 68.
Rated 5 out of 5 by from So simple to use and seems very effective It's almost too good to be true. It's water-based and the brushes was out very easily. It forms a plastic-like surface on the felt roofing I used it on. A 4 litre tin also seems to go a long way (3 coats on a 6 x 4 shed roof and 2 x coats for fixes on a lean-to felt roof. It works well, if it actually lasts 10 years it's an impressive product.
Date published: 2019-11-06
Rated 1 out of 5 by from Poor product Bought 2x 4 litre tins for my garage roof as it had been leaking when it rained, and very disappoint with the product. After applying 2 coats and following the instructions on the tin the roof is still leaking, despite the claim that it should fix leaks for 10 years!
Date published: 2019-10-18
Rated 5 out of 5 by from It Works Excellent stuff, we had a slight leak on new log cabin roof and and just painted over the area and no leak now, brilliant.
Date published: 2019-10-07
Rated 5 out of 5 by from Simply The Best - of its kind I’ve found Great quality product. Nice and thick but goes on well with a decent brush. Great coverage
Date published: 2019-09-16
Rated 5 out of 5 by from Great Roof sealant Bought Thompsons Roof Seal to cover my good, not leaking but ageing felt on my garage roof, found it so easy to brush on, in two thick coats. Excellent finish!!!
Date published: 2019-09-09
Rated 5 out of 5 by from Great product Cheapest and good quality
Date published: 2019-09-01
Rated 4 out of 5 by from flat roof leak wanted something to paint onto a rubberised flat roof which was periodically letting water in read the reviews so bought it.used on a damp day but dried fairly quickly allowing for a second coat.easy to put on with a brush will wait n see if it has resolved the leak problem
Date published: 2019-08-15
Rated 5 out of 5 by from Great product easy ordering the night before on internet and great service in York. product works really well with easy application and sealed flat roof in an hour before being tested by a downpour and guess what? No more leaks. Brilliant stuff.
Date published: 2019-08-08
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