Roof water proofer

I have an cement/asbestos roof on my shed which leaks a bit. Someone recent ly showed me some stuff he had in a can which you could paint on from the u nderneath and it would seal the leak. I didn't write the name down and now have forgotten it! The product was grey looking and seemed to have a fibrou s texture. Anyone know what I might be talking about?

Reply to
cryptogram
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possibly this stuff:

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I am fairly sure I have seen it in Lidl or Aldi

Reply to
Mrcheerful

Known in the roofer's trade as 'Pikey Paint'

Waste of time and money; the only way to fix it is replacement.

Chris

Reply to
Chris Whelan

I'd guess anything which paints on from the underneath would have an even shorter life than most of these sort of things.

If it's a shed, why not just put a new roof on it? Must be the most simple roof to do possible.

Reply to
Dave Plowman (News)
[...]

The cost involved in disposal of asbestos-based materials would be one reason to try to retain the existing roof.

Chris

Reply to
Chris Whelan

just put the new one over the asbestos, you get a dry and insulated roof

Reply to
Mrcheerful

ntly showed me some stuff he had in a can which you could paint on from the underneath and it would seal the leak. I didn't write the name down and no w have forgotten it! The product was grey looking and seemed to have a fibr ous texture. Anyone know what I might be talking about?

Point one - I've posted this in the Wrong NG! Point two - the shed is 14 metres x 7 metres. So re roofing is not to be un dertaken lightly. Point three - What is the actual product known as Pikey Paint? Point four - I would rather try the product for myself (if I knew what it was) and then decide whether is was any good.

Reply to
cryptogram

Painting from beneath does not alieviate the problem of a leaky roof, the water will still penetrate further degrading the exposed surface, the paint will start to bubble and lift off.

Rubberiod supply a paint that can be applied over the top of the roof but it is only short term, if the fabric of the roof is knackered its pointless, like sticking underseal over rusted bodywork

Reply to
steve robinson

I would think that painting it on the top of the roof would be a better idea, stopping leaks from the inside didn't work for me, because the material is permeable if there is any damage.

My garage cement roof drove me crazy painting over leaks until I finally had it re-roofed in steel, which has a fabric lining on the underside which prevents condensation forming and dripping.

Expensive solution though, it cost me as much as the garage did many years ago. :-(

Reply to
Gordon H

Many moons ago my grandfather had a cracked asbestos roof...

We just bought some corrugated plastic sheeting that followed the same wavyness (tech term) and put it over the top for the full length.

I think the fun bit was finding what stuck it as we were understandably reluctant to drill holes and use the normal bolts.. I think we found copius amounts of felt adhesive brushed over worked and was cheap. I dare say pink grip would do.

My granfather had previously glues patches of felt over holes that the little darlings had made with stones.

Reply to
Tom Burton

ntly showed me some stuff he had in a can which you could paint on from the underneath and it would seal the leak. I didn't write the name down and no w have forgotten it! The product was grey looking and seemed to have a fibr ous texture. Anyone know what I might be talking about?

The problem with painting over the top of the roof is that a large part of it is covered in solar panels.

Reply to
cryptogram

ntly showed me some stuff he had in a can which you could paint on from the underneath and it would seal the leak. I didn't write the name down and no w have forgotten it! The product was grey looking and seemed to have a fibr ous texture. Anyone know what I might be talking about?

Mr Cheerful's stuff might be the sort of thing. It's not actually the very product I was shown, but it may be equivalent.

Reply to
cryptogram

Yep, it's pretty off topic even for here!

Shed? That's a bloody barn!

There are various products available from places like Wickes; they vary in cost, ease of use, and effectiveness. The best thing to do would be to go to your nearest, and browse the info on the cans. The best known is probably Flexacryl.

Fair enough, but anything you apply inside is going to make matters worse rather than better in the longer term.

BTW, my critical comments on the ineffectiveness of applied liquids to leaking roofs is based on the 20 years experience as a roofing contractor that my son has.

Chris

Reply to
Chris Whelan

+1

try posting in uk.d-i-y where I suspect you'll get the same replies;!...

Reply to
tony sayer

ntly showed me some stuff he had in a can which you could paint on from the underneath and it would seal the leak. I didn't write the name down and no w have forgotten it! The product was grey looking and seemed to have a fibr ous texture. Anyone know what I might be talking about?

Thanks everyone. I can work from here.

Reply to
cryptogram

Oh well then you'll:

A) have loads if money from FIT so you can afford proper repairs

And

B) have learned the lesson that you should have made the roof good before putting up Pikey Panels.

Reply to
Steve Firth

I don't know. My parents used to have a cement/asbestos garage roof with a crack across three or four corrugations. We painted the underside with a very thick, sticky, almost gone off, car underseal and that stopped the leak for ten years or so!

SteveW

Reply to
SteveW

It costs nothing to dispose of asbestos if you do it yourself!

Keep it wet to prevent flying fibres. Remove as whole pieces without breaking. Double bag. Take to whichever of your local council "tips" has a container for it - you may have to phone beforehand.

That's how I got rid of mine. I now have a roof that consists of a supporting skin of OSB, covered with galvanised, box section roof sheets.

SteveW

Reply to
SteveW

And often from the same people :)

SteveW

Reply to
SteveW
[...]

The OP's 'shed' is 14 metres x 7 metres. My local council has a strict limit on the number of asbestos-based panels you can take at any one time, and a limit of one visit every six months. It would take a considerable time to dispose of by that means.

Chris

Reply to
Chris Whelan

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