corrugated asbestos garage roof, how to spread my weight?

Chrysotile roofing sheets should never be subject to loading.

The best solution is to re-roof it with onduline or twinwall etc.

- Buy some large bolt croppers

- Crop all the (usual) J-bolts from below

- Wear any N95 mask, wet the sheets above & below

- Slide the roofing sheets off, then prepare for disposal (*)

- Fit new roofing sheets

(*) Disposal is according to your council website: Some have a pre-defined waste site, not the general site. You turn up on a particular day with a piece, double bagged & taped. They then approve its disposal, try to pick a piece with Chrysotile visible.

(*) Breakage should be painted with any scrap oil or latex paint: Breaking a panel releases few fibres due to high cement content, however care must be taken to not allow broken edges to act as a fire against one another and likewise never drill, holesaw, saw or smash panels. Painting any broken edges with any scrap oil or latex paint is considered normal - many garage walls are adorned with scrap paint from brush cleaning and sealing any broken side panels. Oil paint is effective on cement, try removing oil paint from brickwork :-)

Cowboy asbestos disposal companies.

- Usually claim the asbestos sheet is something else

- Provide false material proof from pocket to you & insurers

- Make a pigs ear of it, cost insurers 12-20k, then sued

- The profit from many outweighs the litigation from some.

If the frame underneath is 40yr old rusty steel beware it will collapse as much as the chrysotile break. Remove the side-panels by angle-grinder on the *steel side* only after removing the roof sheets. The reason is the side panels may actually be all that is holding it up. Some people rebuild by bolting together 0.125" thick 1.5" L-angle aluminium, somewhat like a garden centre or greenhouse. A considerable amount of cross-bracing is required since modern cladding does not contribute much rigidity to the structure unlike Chrysotile. There are black recycled plastic agricultural panels available (Agriboard?) which would make useful side cladding (infill panels) which are relatively strong & cheap compared to alternatives.

What if you want to spread this out over a few years re cost/time/ hassle? No problem, work from one end and progress accordingly - working from below, never above (no need).

N95 mask, spray wet from above & below, crop the J bolts, simply lift off the panels, old oil paint any suspect edges before removal if bothered. Remember you have been walking around and inside the thing for years, slamming the door :-)

Reply to
js.b1
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Which is why you protect yourself by not walking in front of it.

Reply to
dennis

messagenews: snipped-for-privacy@b30g2000yqd.googlegroups.com...

Local garage, shares same type of roof as my workshop , had asbestos roofing panels analysed for his employee insurance, verdict was it was more cement than asbestos, removal not neccessay but when it may be just advice to keep it wet, no requiremnt for specialist contractors, having said that don`t think going to bother with moss on mine.

Contrast removal of asbestos pipe cladding at old hospital, totally sealed , air lock entry, every6 section injected with resin, cut off pipe, triple bagged , labeled and photo record of section of removal, then taken somewher in sealed wagons.

Cheers Adam

Reply to
Adam Aglionby

If my lungs are full of air I just about float. Breathe out and I sink like a stone - except in sea water.

Reply to
Invisible Man

And so it ought.

Go to an asbestos roof, peel off a clump of moss, look at just what is underneath stuck to it.

Reply to
Andy Dingley

That's because you're floating head uppermost.

Reply to
Andy Dingley

Just try it. You know how effective a pressure washer is at disturbing the surface of tired cement. Catch some of the run off water, filter it off and look at the residue. Or else pressure wash a bit of it and just look at the exposed fibres afterwards.

I have pressure washed my roof. I've also gone at it (wet) with a (hand) wire brush. This has been to clean the surface before repairing a couple of spots of local damage. Pressure washing is a good way to deal with this and leaves a clean surface for repairing afterwards. However I've handled the run-off wastes carefully and then painted the surface afterwards to seal it.

Reply to
Andy Dingley

presumably some sort of analysis was required here? e.g. were they perhaps moss "roots" you're remembering?

wiki advises:- "industrially-processed chrysotile usually has shorter fibre bundles. The diameter of the fibre bundles is 0.1=961 =B5m, and the individual fibrils are even finer, 0.02=960.03 =B5m, each fibre bundle containing tens or hundreds of fibrils.[3]"

that looks pretty small to me.....

Cheers JimK

Reply to
JimK

What you forget is that some of us either have analytical chemical laboratories at home, or our friends are the sort of obsessives who want to use their own toys to see what sort of crap is on our roof

8-) But washing it out, removing the organics and sticking the rest under a microscope isn't exactly rocket science.
Reply to
Andy Dingley

As a swimming coach and teacher of long standing I've /never/ yet come across anyone who cannot float. The odd one needs a little more air in the lungs to float, but is able to. With the increasing lardiness of the nation it's getting easier to find people who have difficulty in sinking.

Anyone who has said they can't float, I've tested them and /proved/ that they /can/ float.

Reply to
<me9

We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold. I remember Bill saying something like:

What a load of self-serving c*ck. Christ onna bike, you'd think the stuff was radioactive, the way some of those tossers go on about it.

Reply to
Grimly Curmudgeon

Can't forget what I never knew: >)

You also never said that lab. analysis (sp) was necessary - just to "look at it"....

Anyhow (fellow scientist :>), how do you know you were looking at the actuall "killer" fibres themselves?....

Cheers JimK

Reply to
JimK

In message , snipped-for-privacy@privacy.net writes

I guess I have acquired 10kgs since I last tried so you may be correct.

Sitting on the pool bottom never used to be a problem though.

regards

>
Reply to
Tim Lamb

I have, did my garage roof 10 years ago, No surface damage whatsoever.

Reply to
The Medway Handyman

Leave the moss. Once you start taking it off, you release fibres which would otherwise have stayed put. But if you really really must do this, make sure everything is soaking wet before you start, and regularly spray as you work.

Reply to
John Whitworth

Whilst that is probably true, a blase attitude on these groups could lead people with smaller amounts of brain cells to start thinking that it's a quick way to earn a buck, and start removing rather more than two sheets per lifetime.

Asbestos (yes, even the white chrysotile) was banned for a reason.

Reply to
John Whitworth

Utter utter nonsense. You do realise that asbestos fibres are everywhere, don't you? Normal exposure won't kill you.

Reply to
John Whitworth

In message , Grimly Curmudgeon writes

RADIOACTIVITY !!!

We're all doomed

Reply to
geoff

Some of us avoid swimming pools, and use a lifejacket when on water.

I've got fatter now, and I think I just about float in fresh water, but I too used to be able to sink gently to the bottom and stay there. I haven't tested for a while. BTW floating in salt water is easy.

The attitude of my teachers - who also claimed never to have come across anyone who doesn't float - resulted in my gaining a mild phobia to water that I've never quite got over, and that put me off learning to swim all though my childhood. It was only when I wanted to learn to sail that I learned to swim, in my mid teens.

When I was young I was over 6ft, and 10st 7lbs, which is thinner than most - not much fat. We do exist.

Andy

Reply to
Andy Champ

Unfortunately there is evidence that the reason _all_ types were banned is so that someone could make a quick buck. White asbestos cement roofs are more likely to cause a fall hazard than a cancer one.

Andy

Reply to
Andy Champ

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