Does asbestos roofing go porous?

[JackyJoll]

The old corrugated roof of the shed is acting like heavy rain and melting snow soaks through it. Does corrugated asbestos go like that?

Have any of you had any success sealing it with a paint or coating?

I am absolutely not asking for health and safety or environment-saving advice.

[Wreckless Rat]

The old corrugated roof of the shed is acting like heavy rain and melting snow soaks through it. Does corrugated asbestos go like that?

Have any of you had any success sealing it with a paint or coating?

I am absolutely not asking for health and safety or environment-saving advice.

Yes it can, sealing it can be done with a suitable roofing sealer, but it wont last long. ime

[Kneerly Down]

I would use this:
https://www.screwfix.com/p/no-nonsense- ... 5ltr/57474

'Normal' paint/bitumen products rarely work well IME.

[JackyJoll]

I would use this:
https://www.screwfix.com/p/no-nonsense- ... 5ltr/57474

'Normal' paint/bitumen products rarely work well IME.

Thanks. That does look hopeful.

[OBO]

They were always porous from new.
Pressure washing makes them worse. (And brittle).
OBO, old industrial roofer. ☺

[OBO]

I would use this:
https://www.screwfix.com/p/no-nonsense- ... 5ltr/57474

'Normal' paint/bitumen products rarely work well IME.

Bitumen products work fine IF you use an appropriate primer first.

[Ditchfinder]

We just installed a new plastic roof on top of the asbestos roof on our shed. Cheap, easy and has been weatherproof ever since.

[The Martian]

Fenacryl, it's a bostik product that you can get in Screwfix for about £40 per 5l. Two will do an average size garage roof.
Just paint it on (do wear gloves it's a liquid polymer and it's a proper cunt to get off your skin).
Get the grey / silver rather than black as it reflects heat and lasts longer. I did an asbestos garage roof in it almost 4 years ago and it's still sound, also used it on flat roofs with good results.

[slowsider]

Mine needs scraping again first - looks like sedum at the moment. The moss holds the water long enough to leak through.

[JackyJoll]

We just installed a new plastic roof on top of the asbestos roof on our shed. Cheap, easy and has been weatherproof ever since.

But that’s fixing it properly!

[Ditchfinder]

We just installed a new plastic roof on top of the asbestos roof on our shed. Cheap, easy and has been weatherproof ever since.

But that’s fixing it properly!

I got a man in to do it (actually 2 of them) hence why it got fixed properly - everything I 'fix' is likely to need further fixes on an ongoing and frequent basis

Wasn't very expensive either - materials + 1 day labour for 2 of them.