Cromar Black Cromapol Acrylic Waterproofing Roof Sealant Fibre Reinforced Roof Coat 5Kg

Sorted a leak on workshops cracked asbestos roof. Since I did it no more leaks and the stagnant water smell has disappeared. Great quality product!

I bought a tin of this nearly a year ago, but it's taken this long to find the right weather window to apply it, but it's now up there on a flat roof over a box window (2 x 1.5 m) where the roofing felts had been disintegrating badly in places. I filled the holes last year with another product, and now by coating the whole thing with this sealant it should protect the roofing felts from further degradation (they're 60 years old but with 90% of the surface still in very good condition) and it should keep the roof leak free for a long time to come. People talk about adding a new layer every five years, but I reckon this will last decades, in combination with the roofing felts underneath. I expected bad fumes, but no - it was pleasant to work with and easy to apply. I used a metal ladle to get lumps of it out of the tin and onto the roof, and that worked well, sparing the disposable brush unnecessary damage. Also, by dropping those lumps of fibrous gloop here and there over a quarter of the roof for the first quarter of the tin, I was able to work out how thickly I needed to apply it to get an even coating. I had had the option of putting it on thick or trying to stretch it to do two of these flat roof areas (two box windows, one on the west side of the house, and one in much better condition on the east side), but I decided to go thick and leave the other flat room for another time. That was the right decision: it would likely have been rather thin if I'd tried to make it do both, so instead it's a good thickness that provides better strength for a lasting repair. I was able to heap it up a bit at the edges of the roofing felts to protect those and ensure that water wouldn't seep in at the joins, and having checked it all 48 hours later, it's all gone solid in time for the next lot of heavy rain which should arrive in another 24 hours. It's a super result which means I won't be losing sleep in bad weather any more worrying about what's going on up there. The light grey colour also means that room hopefully won't get so unbearably hot in summer any more, which is why I chose this over an alternative type of product. I'll see how that works out next summer, but I'm now 95% sure that I should use this again next time instead of the other product that tempted me.

Works very well and dries quick. Bit thick so make sure you use correct tar brush. Last 10% or so seems be go a bit fibrous and more difficult to apply. Overall good.

Fixed my shed roof . What else can I say . It is a bit of a job painting it on , but sealed it in one coat .

Have used Cromapol a few times for minor leaks on flat roof. Always does the job. Can apply when damp but I’ve usually applied when dry. Wear gloves though. Good coverage and easy to apply with an old brush. Much better than bituminous covering.

I ordered to coat my garage roof following building work. I used two tins to complete the job, which was just enough. I mixed the the sealant as required but when coating the roof it was still quite fibrous and left a slightly fibre raised finish. Hope this is correct can't find any reference that this may happen. It was easy to apply and the finish looks really professional. Would recommend.

Excellent product. Similar to most roofing products of this category, but at a good price. Just works.

Excellent instant waterproofing product