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🛠️ Seal it, shield it, forget it — 10 years of roof confidence!
Ronseal Thompsons High Performance Roof Seal Black 4 Litre is a premium, flexible roof coating designed to protect and repair roofing surfaces for up to 10 years. Featuring UV-stable iron oxide pigments and a breathable membrane, it prevents cracking, splitting, and moisture damage under extreme weather conditions. Ideal for flat roofs and various materials, it offers professional-grade durability with easy application and resealable packaging.
| ASIN | B001GU6I04 |
| Best Sellers Rank | 36,925 in DIY & Tools ( See Top 100 in DIY & Tools ) 27 in Roof Coatings & Paints 3,287 in Adhesives & Sealers |
| Brand | Ronseal |
| Colour | Black |
| Compatible Material | Roof, potentially other materials such as wood, concrete, metal, and various types of plastics or composite materials |
| Customer Reviews | 4.5 out of 5 stars 268 Reviews |
| EU Spare Part Availability Duration | 10 Years |
| Included Components | Mounting Hardware||User Manual |
| Item Dimensions | 18 x 18 x 19 centimetres |
| Item Form | Liquid |
| Item Weight | 4 Kilograms |
| Item dimensions L x W x H | 18 x 18 x 19 centimetres |
| Item weight | 4 Kilograms |
| Manufacturer | Ronseal |
| Manufacturer Part Number | RSLHPRSBL4L |
| Material | Iron Oxide |
| Model Number | RSLHPRSBL4L |
| Number of Items | 1 |
| Number of Packs | 1 |
| Style | Compact |
| Style Name | Compact |
| Surface Recommendation | Roof |
| Unit Count | 1.0 count |
| Water Resistance Level | Waterproof |
| Water resistance level | Waterproof |
A**R
Excellent item
Does a great job. Would recommend.
D**T
Lasts and protects well
Used Thomson’s over the years exellent protection easy to apply use it renew protection on flat felt roofs good priced good coverage
B**Y
Works well and is easy to apply
Very good shed roof paint. Easy to apply -- with a suitable brush and does a good job of water proofing the shed room
B**S
Great for repairing felt roofs and sealing.
This is incredibly useful sealant and coating or repairing felt roofs or for extending the life of the roof. Have used it for sticking down torn roofing felt to sealing porous old felt to covering clout nail heads which were letting water in. Not cheap but well worth it.
K**R
Does what it says
Sealed shed roof and despite torrential rain storms since applied has worked flawlessly. Easy to apply with good coverage and adhesion despite being on sloped shed roof. Not the cheapest but the surface finish and results worth the cost.
P**G
a new roof for years to come
This stuff is brilliant! I built a very large shed several years ago and used good quality roof felt but a few cracks were appearing at the roof folds. I The roof is approximately 14 square metres and this tin covered it perfectly. I could not believe how well it filled the cracks and provided a new skin. It also looks fantastic.
L**Z
Like water off a ducks back
Wow . One coat so far and the water drips right off . It goes a long way . Very impressed on ease of application and durability.
R**D
Complete seal of shed roof
Very easy to use,sealed roof completely,highly recommend
Trustpilot
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