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🛡️ Seal it once, forget it for a decade!
Thompsons 10 Year Roof Seal Grey 1L is a high-performance, silicone-based roof sealant designed to provide long-lasting protection against leaks and weather damage. Its fast-acting formula becomes rainproof within 6 hours, resists UV fading, and flexes with roof movements to maintain a durable, waterproof barrier for up to 10 years. Compatible with tiles, slates, and metal, this UK-made sealant is trusted by homeowners to safeguard their roofs with minimal upkeep.





| ASIN | B00LXM1WZQ |
| Best Sellers Rank | 20,864 in DIY & Tools ( See Top 100 in DIY & Tools ) 13 in Roof Coatings & Paints |
| Brand | Thompson's |
| Colour | Grey |
| Compatible Material | Tiles, Slates, Metal |
| Country Of Origin | United Kingdom |
| Customer Reviews | 4.4 4.4 out of 5 stars (415) |
| EU Spare Part Availability Duration | 10 Years |
| Global Trade Identification Number | 05010214801435 |
| Included Components | 1 Tin |
| Item Dimensions | 11 x 11 x 12 centimetres |
| Item Form | Liquid |
| Item Type Name | Roof Seal |
| Item Weight | 0.9 Kilograms |
| Manufacturer | Sherwin-Williams |
| Manufacturer Part Number | 30143 |
| Material | Resin |
| Model Number | 30143 |
| Number of Items | 1 |
| Style Name | Silicone |
| Unit Count | 1000.0 millilitre |
| Water Resistance Level | Water Resistant |
L**O
Great product!
This is a fantastic product. I applied it to the felt roofing in the house to cover some cracks which had created some wood damage from water ingress. This has stopped further leaks and treated areas remain dry despite some recent downpour. Best to apply at least two layers to ensure the areas are well covered. Very very pleased.
A**N
Stopped all the leaks and easy to apply
Have a garden shed with decaying felt roof which I had covered with repair strips to no avail. Leaks were everywhere and this paint was a desperate last move. Wiped the roof with washing up liquid to clean it. Applied two coats three months ago with firm brush - pure magic. Not a single leak. It also covers well. Applied in warm weather and it dried fast, in an hour or so. Could clean the brush with washing up liquid. What more can I say. Perfect.
A**R
Trustworthy
Does what it says on the tin .
K**S
Thomsons 10 year roof seal grey
Used this product on my garage roof and very pleased with the results
A**T
good quality
grey colour, easy to paint, covers area of 7x3 feets well.
T**H
Works well to lengthen the life of shed roof
I’ve used this a few time for the shed roof - it’s think and holds well onto the felt and repairs areas if damage well. Difficult to clean the brush afterwards, but easy to apply and no leaks so far!
M**L
Does the job
the product was perfect for the job i had to do
J**M
As advertisex.
I put 1 coat on roof felt seams and it stopped the leak. When it stops raining long enough, I'll put a 2nd coat on. Easy to apply.
Trustpilot
1 week ago
1 month ago