I have a double length garage with asbestos/cement corrugated pitched roof.

The original ridge which is steel has corroded to nothing in many places and needs to be replaced as the garage is open to the elements in those places.

I was planning on using bitumen ridge tiles made by various people, also Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be removed from inside as it is bolted through, worst way the bolts can be ground off and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the roof even with a crawler board, I had always assumed it would be ok.

Has anybody has experience of tackling this job, I really don't want to replace the roof as it would cost £1000s.

I would appreciate any comments.

Thanks in advance.

On 26/12/2019 11:27, wrote:
I have a double length garage with asbestos/cement corrugated pitched roof.

The original ridge which is steel has corroded to nothing in many places and needs to be replaced as the garage is open to the elements in those places.

I was planning on using bitumen ridge tiles made by various people, also Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be removed from inside as it is bolted through, worst way the bolts can be ground off and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the roof even with a crawler board, I had always assumed it would be ok.

Has anybody has experience of tackling this job, I really don't want to replace the roof as it would cost £1000s.

I would appreciate any comments.

Thanks in advance.


If the roof is asestos you do need to be very careful. It would be
worth checking if that really is the case. There are specialist
asbestos removers and they might give your a free quote and tell you if
the roof is made using asbestos.


--
Michael Chare

Cement/asbestos sheets do degrade over time, when we demolished our concrete garage I removed the flat roof of corrugated cement asbestos sheets by using a multi tool to cut the fixing nails from below. Many of the sheets simply split along the corrugations and few if any came off without bits breaking off. I am really glad I did not even consider crawling on top even with planking to span the joists.

Richard

On 26/12/2019 11:39, Michael Chare wrote:
On 26/12/2019 11:27, wrote:
I have a double length garage with asbestos/cement corrugated pitched
roof.

The original ridge which is steel has corroded to nothing in many
places and needs to be replaced as the garage is open to the elements
in those places.

I was planning on using bitumen ridge tiles made by various people,
also Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be
removed from inside as it is bolted through, worst way the bolts can
be ground off and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the
roof even with a crawler board, I had always assumed it would be ok.

Has anybody has experience of tackling this job, I really don't want
to replace the roof as it would cost £1000s.

I would appreciate any comments.

Thanks in advance.


If the roof is asestos you do need to be very careful.Â* It would be
worth checking if that really is the case.Â* There are specialist
asbestos removers and they might give your a free quote and tell you if
the roof is made using asbestos.



'Free' quote followed by stupid price to remove and dispose.!

On 26/12/2019 11:27, wrote:
I have a double length garage with asbestos/cement corrugated pitched
roof.

The original ridge which is steel has corroded to nothing in many
places and needs to be replaced as the garage is open to the elements
in those places.

I was planning on using bitumen ridge tiles made by various people,
also Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be
removed from inside as it is bolted through, worst way the bolts can
be ground off and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the
roof even with a crawler board, I had always assumed it would be ok.


I spent many teenage hours sunbathing on or low pitched lean-to asbestos
garage roof.

Before I learnt how to use saliva to mix asbestos based 'rawlplastic'.

Compared with 60 fags a day, it hasnt done any harm



Has anybody has experience of tackling this job, I really don't want
to replace the roof as it would cost £1000s.

I would appreciate any comments.

Thanks in advance.


Might be able to fit a zinc or lead ridge?


--
"The great thing about Glasgow is that if there's a nuclear attack it'll
look exactly the same afterwards."

Billy Connolly

On 26/12/2019 11:39, Michael Chare wrote:
If the roof is asbestos you do need to be very careful.
Utter ********.


Asbestos risk is totally overblown, and cement asbestos totally so.

The risk is asbestos fibres in the lungs. Over long periods of time.
They are bound well in cement board and you aren't using angle grinder.

If you aren't a smoker and you can cough the lungs will clear the **** out.

--
"The great thing about Glasgow is that if there's a nuclear attack it'll
look exactly the same afterwards."

Billy Connolly

Thanks Michael

The more I read the more worrying it becomes.

I wanted to avoid the expense as the roof is in good condition, just the ridge that needs replacing.

In article , Michael Chare
wrote:
On 26/12/2019 11:27, wrote:
I have a double length garage with asbestos/cement corrugated pitched
roof.

The original ridge which is steel has corroded to nothing in many
places and needs to be replaced as the garage is open to the elements
in those places.

I was planning on using bitumen ridge tiles made by various people,
also Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be
removed from inside as it is bolted through, worst way the bolts can be
ground off and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the
roof even with a crawler board, I had always assumed it would be ok.

Has anybody has experience of tackling this job, I really don't want to
replace the roof as it would cost £1000s.

I would appreciate any comments.

Thanks in advance.


If the roof is asestos you do need to be very careful. It would be
worth checking if that really is the case. There are specialist
asbestos removers and they might give your a free quote and tell you if
the roof is made using asbestos.

Asbestos cement is not the samae s asbestos. It was a very commonly used
building material in the '60s and 70's to my knowledge. I used it when
building an extension in the early 70s. The Marley garage at this house
also uses corrugated asbestos cement as its roofing material.

But on the original question, I imagine the steel ridge was/is structural.
I can't see the roof staying up, let alone supporting your weight on a
crawler if you remove it. Bitumen ridge tiles might keep the rain out, but
they haven't any structural strength.


-

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On Thursday, 26 December 2019 12:19:06 UTC, wrote:
Thanks Michael

The more I read the more worrying it becomes.

I wanted to avoid the expense as the roof is in good condition, just the ridge that needs replacing.

just put some timber beams across supported on something else, add a board and hopefully you can access it.

RE asbestos fibres, if the sheet isn't disintegrating it's not releasing fibres.


NT

In article ,
The Natural Philosopher wrote:
On 26/12/2019 11:27, wrote:
I have a double length garage with asbestos/cement corrugated pitched
roof.

The original ridge which is steel has corroded to nothing in many
places and needs to be replaced as the garage is open to the elements
in those places.

I was planning on using bitumen ridge tiles made by various people,
also Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be
removed from inside as it is bolted through, worst way the bolts can
be ground off and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the
roof even with a crawler board, I had always assumed it would be ok.


I spent many teenage hours sunbathing on or low pitched lean-to asbestos
garage roof.

Before I learnt how to use saliva to mix asbestos based 'rawlplastic'.

There's still nothing to replace it.

-

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

I don't think the ridge is structural, the panels are fixed to the steel angle trusses which are fixed to the top of the walls.

They are so rusted that if they had been structural the roof would have already collapsed!

On Thursday, 26 December 2019 11:27:37 UTC, wrote:
I have a double length garage with asbestos/cement corrugated pitched roof.

The original ridge which is steel has corroded to nothing in many places and needs to be replaced as the garage is open to the elements in those places.

I was planning on using bitumen ridge tiles made by various people, also Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be removed from inside as it is bolted through, worst way the bolts can be ground off and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the roof even with a crawler board, I had always assumed it would be ok.

Has anybody has experience of tackling this job, I really don't want to replace the roof as it would cost £1000s.

You can deal with asbestos cement yourself.
https://www.hse.gov.uk/pubns/guidance/a14.pdf

On Thursday, 26 December 2019 11:27:37 UTC, wrote:
I have a double length garage with asbestos/cement corrugated pitched roof.

The original ridge which is steel has corroded to nothing in many places and needs to be replaced as the garage is open to the elements in those places.

I was planning on using bitumen ridge tiles made by various people, also Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be removed from inside as it is bolted through, worst way the bolts can be ground off and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the roof even with a crawler board, I had always assumed it would be ok.

Has anybody has experience of tackling this job, I really don't want to replace the roof as it would cost £1000s.

I would appreciate any comments.

Thanks in advance.

You can lay a ladder along the corrugations making sure it spans the purlins supporting the sheets.
Then if the sheets do crack the ladder will not fall.

On 26/12/2019 18:29, harry wrote:
On Thursday, 26 December 2019 11:27:37 UTC, wrote:
I have a double length garage with asbestos/cement corrugated pitched roof.

The original ridge which is steel has corroded to nothing in many places and needs to be replaced as the garage is open to the elements in those places.

I was planning on using bitumen ridge tiles made by various people, also Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be removed from inside as it is bolted through, worst way the bolts can be ground off and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the roof even with a crawler board, I had always assumed it would be ok.

Has anybody has experience of tackling this job, I really don't want to replace the roof as it would cost £1000s.

I would appreciate any comments.

Thanks in advance.

You can lay a ladder along the corrugations making sure it spans the purlins supporting the sheets.
Then if the sheets do crack the ladder will not fall.

Agree, but the ladder may give high local loadings increasing the risk
of cracking. If you can get the ridge off in the first place, is it
possible to get a sheet of stirling board or shuttering ply, put a
substantial batten (75*75?) along one short edge, and then hook that
along the top of the corrugated boards. You have the same protection
from the purlins as in Harry's method. Remember that bitumen roofing is
only rated for 10 years, it can last a bit longer, but modern steel
ridge might be better. You fit the ridge by moving the crawler along,
then do the final ridge section from one end. If it is a bit steep, put
a few roofing battens on the top side of the crawler to give footholds.

The Natural Philosopher wrote:
On 26/12/2019 11:39, Michael Chare wrote:
If the roof is asbestos you do need to be very careful.
Utter ********.


Asbestos risk is totally overblown, and cement asbestos totally so.

The risk is asbestos fibres in the lungs. Over long periods of time.
They are bound well in cement board and you aren't using angle grinder.

If you aren't a smoker and you can cough the lungs will clear the **** out.

Get an old person to remove it,(less time left to get problems.)

How well supported is it underneath. This material does go very brittle with
age, just a shock or a foot can bugger it.
I had my garage taken away as I was going to get it done up and turned into
a workshop, but it had the sides made from the same material and I kicked it
and my foot went through and cracked one panel from half way up to the
bottom.
So, I guess a bit of testing of it in a place where its not important might
be prudent. I'd even be careful from the inside as the one I had had the
ridge held on by a hook bolt witch hooked around a rod witch was bent to the
roof pitch, and up close it was obvious that a couple of these had started
small cracks in the asbestos, one assumes by tightening and loosening with
heat over the years.


You may be fine, but do be careful.
Can you not get new ridge covers made from metal these days?
Brian

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wrote in message
...
I have a double length garage with asbestos/cement corrugated pitched roof.

The original ridge which is steel has corroded to nothing in many places and
needs to be replaced as the garage is open to the elements in those places.

I was planning on using bitumen ridge tiles made by various people, also
Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be removed
from inside as it is bolted through, worst way the bolts can be ground off
and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the roof
even with a crawler board, I had always assumed it would be ok.

Has anybody has experience of tackling this job, I really don't want to
replace the roof as it would cost £1000s.

I would appreciate any comments.

Thanks in advance.

It will be from his description. Its asbestos powder in a cement cast into
corrugated panels. That is what gave it its strength, but over the years it
does tend to get minute cracks with frost and all that moss etc, and it can
be very weak if stressed. a very large area is needed to spread the weight
of a person as even if you don't go through, messing with it is going to
make the life expectancy shorter, and the leakability higher. My old shed
was like that. In the start I had to saw it, but in the end, grabbing a
corner would break it off.
Brian

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"Michael Chare" wrote in message
...
On 26/12/2019 11:27, wrote:
I have a double length garage with asbestos/cement corrugated pitched
roof.

The original ridge which is steel has corroded to nothing in many places
and needs to be replaced as the garage is open to the elements in those
places.

I was planning on using bitumen ridge tiles made by various people, also
Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be removed
from inside as it is bolted through, worst way the bolts can be ground
off and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the roof
even with a crawler board, I had always assumed it would be ok.

Has anybody has experience of tackling this job, I really don't want to
replace the roof as it would cost £1000s.

I would appreciate any comments.

Thanks in advance.


If the roof is asestos you do need to be very careful. It would be worth
checking if that really is the case. There are specialist asbestos
removers and they might give your a free quote and tell you if the roof is
made using asbestos.


--
Michael Chare

Actually I did not find the latter the case some years back. They spend a
few hours doing it double bagging them and stacked them carefully in a skip.
That only left the rusty framework and I did see the terrible condition of
this before it was taken down and it scared the heck out of me. How on earth
it was still standing was a miracle!
Brian

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"Andrew" wrote in message
...
On 26/12/2019 11:39, Michael Chare wrote:
On 26/12/2019 11:27, wrote:
I have a double length garage with asbestos/cement corrugated pitched
roof.

The original ridge which is steel has corroded to nothing in many places
and needs to be replaced as the garage is open to the elements in those
places.

I was planning on using bitumen ridge tiles made by various people, also
Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be
removed from inside as it is bolted through, worst way the bolts can be
ground off and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the
roof even with a crawler board, I had always assumed it would be ok.

Has anybody has experience of tackling this job, I really don't want to
replace the roof as it would cost £1000s.

I would appreciate any comments.

Thanks in advance.


If the roof is asestos you do need to be very careful. It would be worth
checking if that really is the case. There are specialist asbestos
removers and they might give your a free quote and tell you if the roof
is made using asbestos.



'Free' quote followed by stupid price to remove and dispose.!

I'm sorry, but my and others experience has obviously not been yours. It
depends very much on the age, stresses of the sheeting and the weathering
though, and is not obvious unless you know what you are looking for. Brian

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"The Natural Philosopher" wrote in message
...
On 26/12/2019 11:39, Michael Chare wrote:
If the roof is asbestos you do need to be very careful.
Utter ********.


Asbestos risk is totally overblown, and cement asbestos totally so.

The risk is asbestos fibres in the lungs. Over long periods of time. They
are bound well in cement board and you aren't using angle grinder.

If you aren't a smoker and you can cough the lungs will clear the ****
out.

--
"The great thing about Glasgow is that if there's a nuclear attack it'll
look exactly the same afterwards."

Billy Connolly

To be honest most asbestos in cement are particles, not fibres. I've sawn it
with a jigsaw, but in the open many many years ago with no ill effects. Not
sure I'd do it in an enclosed area. Asbestos is a mineral and is actually
naturally occurring but obviously not in its purest form.

I had an uncle who died from asbestosis. Basically its fibres which do not
break down caused lesions in his lungs gradually reducing the area
available to take up and expel gasses from the blood. You basically
suffocate. He got it working for Westland Helicopters on the fireproof
wiring in cable looms which had to be installed in restricted areas but
with no protection.

Brian

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"FMurtz" wrote in message
...
The Natural Philosopher wrote:
On 26/12/2019 11:39, Michael Chare wrote:
If the roof is asbestos you do need to be very careful.
Utter ********.


Asbestos risk is totally overblown, and cement asbestos totally so.

The risk is asbestos fibres in the lungs. Over long periods of time. They
are bound well in cement board and you aren't using angle grinder.

If you aren't a smoker and you can cough the lungs will clear the ****
out.

Get an old person to remove it,(less time left to get problems.)

I wonder if access from a cherry picker might be possible then?
Brian

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wrote in message
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Thanks Michael

The more I read the more worrying it becomes.

I wanted to avoid the expense as the roof is in good condition, just the
ridge that needs replacing.

AS I say, mine appeared to be dust, not fibre. the older ones had a slightly
bluish tinge to them and were made with fibres like some pipe lagging one
used to see. There was quite a lot of that in Battersea power station when
it was decommissioned.
Brian

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wrote in message
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On Thursday, 26 December 2019 12:19:06 UTC, wrote:
Thanks Michael

The more I read the more worrying it becomes.

I wanted to avoid the expense as the roof is in good condition, just the
ridge that needs replacing.

just put some timber beams across supported on something else, add a board
and hopefully you can access it.

RE asbestos fibres, if the sheet isn't disintegrating it's not releasing
fibres.


NT

Normally there are some quite stout angle sections running the length near
the ridge. These can rust, they had in the one I had taken down, but its
hard to tell without going up close. Looked particularly at the welds.

Brian

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"charles" wrote in message
...
In article , Michael Chare
wrote:
On 26/12/2019 11:27, wrote:
I have a double length garage with asbestos/cement corrugated pitched
roof.

The original ridge which is steel has corroded to nothing in many
places and needs to be replaced as the garage is open to the elements
in those places.

I was planning on using bitumen ridge tiles made by various people,
also Wickes do them.

The roof itself is in good condition.

I was goung to use a sterling board crawler, the old ridge can be
removed from inside as it is bolted through, worst way the bolts can be
ground off and the ridge pushed off through the gap.

I've read here that people have said that they would not go onto the
roof even with a crawler board, I had always assumed it would be ok.

Has anybody has experience of tackling this job, I really don't want to
replace the roof as it would cost £1000s.

I would appreciate any comments.

Thanks in advance.


If the roof is asestos you do need to be very careful. It would be
worth checking if that really is the case. There are specialist
asbestos removers and they might give your a free quote and tell you if
the roof is made using asbestos.

Asbestos cement is not the samae s asbestos. It was a very commonly used
building material in the '60s and 70's to my knowledge. I used it when
building an extension in the early 70s. The Marley garage at this house
also uses corrugated asbestos cement as its roofing material.

But on the original question, I imagine the steel ridge was/is structural.
I can't see the roof staying up, let alone supporting your weight on a
crawler if you remove it. Bitumen ridge tiles might keep the rain out,
but
they haven't any structural strength.


-

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

So what is holding it up then?
Brian

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wrote in message
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I don't think the ridge is structural, the panels are fixed to the steel
angle trusses which are fixed to the top of the walls.

They are so rusted that if they had been structural the roof would have
already collapsed!

On 26/12/2019 12:16:44, The Natural Philosopher wrote:

Asbestos risk is totally overblown
You obviously don't know anyone close die from mesothelioma. I have and
as usual you're talking rot.

On 27/12/2019 13:48, Fredxx wrote:
On 26/12/2019 12:16:44, The Natural Philosopher wrote:

Asbestos risk is totally overblown
You obviously don't know anyone close die from mesothelioma. I have and
as usual you're talking rot.

And did he catch that from going on a cement roof once?
No.


--
Truth welcomes investigation because truth knows investigation will lead
to converts. It is deception that uses all the other techniques.

On 27/12/2019 19:40:02, The Natural Philosopher wrote:
On 27/12/2019 13:48, Fredxx wrote:
On 26/12/2019 12:16:44, The Natural Philosopher wrote:

Asbestos risk is totally overblown
You obviously don't know anyone close die from mesothelioma. I have
and as usual you're talking rot.

And did he catch that from going on a cement roof once?
No.

Given her only contact would have been the clothes her husband wore, no,
you're right. She never went on a cement roof.

On Friday, 27 December 2019 19:40:05 UTC, The Natural Philosopher wrote:
On 27/12/2019 13:48, Fredxx wrote:
On 26/12/2019 12:16:44, The Natural Philosopher wrote:

Asbestos risk is totally overblown
You obviously don't know anyone close die from mesothelioma. I have and
as usual you're talking rot.

And did he catch that from going on a cement roof once?
No.

The death toll has been huge. But not from asbestos cement sheet, it's loose fibres that are the problem. It's one of those topics on which misinformation is too often swallowed.

Those working in the asbestos industry were routinely exposed to huge levels of fibre. Not surprisingly they also took it home on/in their clothes, hair, car etc.


NT

On Friday, December 27, 2019 at 8:15:16 AM UTC, Brian Gaff (Sofa 2) wrote:
I wonder if access from a cherry picker might be possible then?
Brian

Thats a very good idea! I was thinking of some sort of scaffolding bridge, but a cherry picker makes sense, especially as I wouldn't need access from my neighbour.

As long as you don't get the up/down levers mixed up....

In message ,
writes
On Friday, December 27, 2019 at 8:15:16 AM UTC, Brian Gaff (Sofa 2) wrote:
I wonder if access from a cherry picker might be possible then?
Brian

Thats a very good idea! I was thinking of some sort of scaffolding
bridge, but a cherry picker makes sense, especially as I wouldn't need
access from my neighbour.

As long as you don't get the up/down levers mixed up....

If you do use sheet materials to load spread, put some softening under
it. Carpet underlay or similar to minimise point contact loading.

--
Tim Lamb

I think by the time you have hired a cherry picker and considering the lifetime of the rest of the roof it might be cost effective to remove and replace.

Richard