Polar Specialist Coatings Premium Leak Seal Clear Paint - 500ml - Instant Waterproof Roof Sealant - Ideal for Leaks, Cracks & Roof Repair - Concrete, Brick, Metal, Drainpipes & Gutters - Easy to Apply

After 4 years of a dripping condensing pipe on my boiler, I sprayed 3 coats of this stuff... And not only did it improve the appearance (as there were several attempts in the past) but stopped the leak. My only last option was to replace the pipe, but that was a horrendous job.. so for me, excellent!

The product works great. I had two water leaks and I brushed the leak fix in the area on the shingles and we had a rain the next day and not a drop leaked in. Thanks

Used this to repair/seal a lead lined bay window roof and I am very impressed. The tin arrived in perfect condition, the lid was securely sealed with metal clips and the contents were complete. Tips: mix/stir very well before use to make sure the fibreglass strands are mixed back into the paint (only the black and grey paints I think). Wear a good quality face mask as the paint gives off very strong vapours. The instructions warn you of this. Apply a couple of coats depending on the nature of and damage to the surface being painted. I applied 3 coats to be sure, but the 3rd was overkill to be honest. Very pleased and impressed with the product. It's sorted the problem for me.

I used this to repair a leaky union in my guttering. One coat and I'm no longer suffering that infernal dripping. Brilliant paint and easy to use.

My roof has a small leak i can't see but the plywood sagged so this sealed the area above the sagging plywood until it Is time to reshingle it.