leaking coragated asbestos cement roof

brandydog

would brushing on tanking slurry be off any good
                                                                                    thanks all

Jeepers_Creepers

How large are the leaks?

Tanking slurry might work, but I suspect it's quite a brittle coating (mortar-based) so could easily crack again with any flexing.

I think I'd be inclined to go for a fibrous brush-on coating like Cromapol (there are other makes, pretty much identical). The fibres allow it to bridge cracks and small gaps, and it should remain suitably flexible.

But do some research - read what it's suitable for. Read reviews, etc.

(And a lighter colour won't get as hot. Perhaps grey or even white is best?)

donemedosh

yes i would go for a cromapol type coating as jeepers- creepers said. I put some on a old garage roof last year it is a pain to put on. but it stopped the leaks no problem. make sure you wear gloves as its pretty messy stuff to get off your skin

adonis

What about this stuff,

https://www.roofingsuperstore.co.uk/product/flag-paints-roofix-20-10-waterproofing-roof-repair-compound-5l-black.html

they also had it on ideal world shopping channel in different colours.

Jeepers_Creepers

Similar stuff - a fibre-reinforced acrylic thingie.

Gets cheaper with larger quantities - 20 litres for under £100.