Tough paint, clear conscience
Seal leaks, cracks and joints fast with a one-coat liquid rubber. A handy 500ml or 1 Litre size for quick roof repairs. It brushes on straight from the tin and forms a flexible, seamless waterproof membrane. No primer needed, and made in the UK.
✓ One coat✓ No primer✓ Weatherproof in 1 hour✓ Up to 10 years✓ Made in UK
Why customers choose it
- ✔️ Instant leak seal: a tough, seamless seal that stops water getting in
- ✔️ One coat, no primer: straight from the tin with a brush or roller
- ✔️ Flexible rubber membrane: stretches with surface movement, so it won't crack, split or peel
- ✔️ Fast drying: weather resistant after 1 hour, great for emergency repairs
- ✔️ Sticks to almost anything: asphalt, felt, GRP, metal, concrete, brick and more
- ✔️ Long-lasting: waterproof protection for up to 10 years
Perfect for
- Flat & pitched roofs
- Cracks & joints
- Chimney flashing
- Skylights & vents
- Gutters
- Shed & garage roofs
- Felt & GRP
- Metal & concrete
Available colours
GreyBlackClear
How much do I need?
-
Coverage: about 1m² per litre in one coat
- Rough or porous surfaces use more
| Repair |
Size |
Price |
| Small crack, joint or flashing (up to 0.5m²) |
500ml |
£16.99 |
| Skylight, vent or small patch (up to 1m²) |
1 Litre |
£19.99 |
| Several patches (up to 2m²) |
2 × 1 Litre |
£39.98 |
| Whole roof (5m² or more) |
5L tin – see our 5L listing |
Best value |
Tip: the 1 Litre is only £3 more than the 500ml for double the coverage. For whole roofs, the 5L tin is the best value.
How to apply in 3 steps
-
Prepare: make sure the area is clean, dry and free from dirt and loose material.
-
Apply: stir, then apply straight from the tin with a brush or roller. No primer needed.
-
Dry: weather resistant after about 1 hour and dry in 1–2 hours.
Frequently asked questions
Which size do I need?+
Coverage is about 1m² per litre. A 500ml tin is ideal for a crack, joint or flashing, and a 1 Litre tin covers about 1m². For bigger areas, the 5L tin is better value.
Will it stop a leak straight away?+
It forms a seamless rubber seal as it dries and is weather resistant after about 1 hour. For an active leak, apply to the area once it has been wiped as dry as possible.
Do I need a primer or a second coat?+
No. It's a one-coat system with no primer needed. On very porous or uneven surfaces, a thicker coat gives the best seal.
What surfaces can I use it on?+
Asphalt, brick, concrete, GRP/fibreglass, metal, felt, OSB and more, on flat or pitched roofs.
Can I use it on gutters, sheds and flashing?+
Yes. It's ideal for small repairs on gutters, shed and garage roofs, skylights, vents, chimney flashing and joints.
How long does it last?+
It forms a flexible rubber membrane that moves with the surface, and gives long-lasting waterproofing for up to 10 years.
How long does it take to dry?+
Weather resistant after about 1 hour and dry in 1–2 hours, depending on temperature and thickness.
Which colour should I choose?+
Grey or Black to match most roofs, or Clear when you want the repair to blend in with the existing surface.
How fast is delivery?+
Free next-day UK delivery on orders placed before the daily cut-off.
