My workshop is a converted barn with corrugated fibre cement sheeting roof.
It's been sprayed with expanding foam and when they did it they assured me
that they'd sealed the apex where there is a 'top hat' shape.

Well they obviously didn't - I recently had an enormous bonfire ( 1/2 mile
of Leydandii hedge top and there is a line of 'fall out' ash down the
length of the workshop. So if the ash blew in then my heat MUST be able to
go out !

No chance of getting them back, as access is now very difficult with all the
machines in place, and I don't want them covered in foam anyway !

SO - my thought was some form of insulating sausage that I can poke up there
with a long stick - if there was such a thing as a 6" diameter cylindrical
shape I reckon it would stay in place by friction.

??? BUT YOU MAY HAVE OTHER SUGGESTIONS PERHAPS ???


Andrew

On 21/05/15 14:03, Andrew Mawson wrote:
My workshop is a converted barn with corrugated fibre cement sheeting
roof. It's been sprayed with expanding foam and when they did it they
assured me that they'd sealed the apex where there is a 'top hat' shape.

Well they obviously didn't - I recently had an enormous bonfire ( 1/2
mile of Leydandii hedge top and there is a line of 'fall out' ash down
the length of the workshop. So if the ash blew in then my heat MUST be
able to go out !

No chance of getting them back, as access is now very difficult with all
the machines in place, and I don't want them covered in foam anyway !

SO - my thought was some form of insulating sausage that I can poke up
there with a long stick - if there was such a thing as a 6" diameter
cylindrical shape I reckon it would stay in place by friction.

??? BUT YOU MAY HAVE OTHER SUGGESTIONS PERHAPS ???


Andrew

Open a roll of plastic sleeved glass wool, and roll across the width,
tie with tape?

Well, I'd just add some sheets over where I was working and use the
expanding foam in any case.
Brian

--
From the Sofa of Brian Gaff Reply address is active
"Andrew Mawson" wrote in message
...
My workshop is a converted barn with corrugated fibre cement sheeting
roof. It's been sprayed with expanding foam and when they did it they
assured me that they'd sealed the apex where there is a 'top hat' shape.

Well they obviously didn't - I recently had an enormous bonfire ( 1/2 mile
of Leydandii hedge top and there is a line of 'fall out' ash down the
length of the workshop. So if the ash blew in then my heat MUST be able to
go out !

No chance of getting them back, as access is now very difficult with all
the machines in place, and I don't want them covered in foam anyway !

SO - my thought was some form of insulating sausage that I can poke up
there with a long stick - if there was such a thing as a 6" diameter
cylindrical shape I reckon it would stay in place by friction.

??? BUT YOU MAY HAVE OTHER SUGGESTIONS PERHAPS ???


Andrew

On Thursday, 21 May 2015 14:03:13 UTC+1, Andrew Mawson wrote:
SO - my thought was some form of insulating sausage that I can poke up there
with a long stick - if there was such a thing as a 6" diameter cylindrical
shape I reckon it would stay in place by friction.

You can get jumbo pipe insulation eg

https://www.fluedirect.co.uk/shop/13...for-diameter-6

don't know if that would do on its own or if you could use it as a 'sausage casing' and fill it with a filling of something more compressible.

Owain

On Thursday, 21 May 2015 14:03:13 UTC+1, Andrew Mawson wrote:
My workshop is a converted barn with corrugated fibre cement sheeting roof.
It's been sprayed with expanding foam and when they did it they assured me
that they'd sealed the apex where there is a 'top hat' shape.

Well they obviously didn't - I recently had an enormous bonfire ( 1/2 mile
of Leydandii hedge top and there is a line of 'fall out' ash down the
length of the workshop. So if the ash blew in then my heat MUST be able to
go out !

No chance of getting them back, as access is now very difficult with all the
machines in place, and I don't want them covered in foam anyway !

SO - my thought was some form of insulating sausage that I can poke up there
with a long stick - if there was such a thing as a 6" diameter cylindrical
shape I reckon it would stay in place by friction.

??? BUT YOU MAY HAVE OTHER SUGGESTIONS PERHAPS ???

bit of loft insulation in a carrier bag. Just ensure its the right way up


NT

In message , Andrew Mawson
writes
My workshop is a converted barn with corrugated fibre cement sheeting
roof. It's been sprayed with expanding foam and when they did it they
assured me that they'd sealed the apex where there is a 'top hat' shape.

Well they obviously didn't - I recently had an enormous bonfire ( 1/2
mile of Leydandii hedge top and there is a line of 'fall out' ash
down the length of the workshop. So if the ash blew in then my heat
MUST be able to go out !

No chance of getting them back, as access is now very difficult with
all the machines in place, and I don't want them covered in foam anyway !

SO - my thought was some form of insulating sausage that I can poke up
there with a long stick - if there was such a thing as a 6" diameter
cylindrical shape I reckon it would stay in place by friction.

??? BUT YOU MAY HAVE OTHER SUGGESTIONS PERHAPS ???

Not certain I have fully grasped the issue.

You can get pre-formed metre wide foam insulation to seal box section to
flat folded ridge. I've not seen this in big six but you would need to
have the ridge off to fit. I have been through a 15' high asbestos
cement roof and I don't recommend it.

Could you not cut some 75mm Celotex or similar the same shape but
slightly larger than the big six gap and stuff that in? Narrow blade in
the bandsaw. Don't breath the dust it is nasty stuff.

Couple of access platform sections and crawling boards to span your
machinery?

--
Tim Lamb

On 21/05/15 14:03, Andrew Mawson wrote:
My workshop is a converted barn with corrugated fibre cement sheeting
roof. It's been sprayed with expanding foam and when they did it they
assured me that they'd sealed the apex where there is a 'top hat' shape.

Well they obviously didn't - I recently had an enormous bonfire ( 1/2
mile of Leydandii hedge top and there is a line of 'fall out' ash down
the length of the workshop. So if the ash blew in then my heat MUST be
able to go out !

No chance of getting them back, as access is now very difficult with all
the machines in place, and I don't want them covered in foam anyway !

SO - my thought was some form of insulating sausage that I can poke up
there with a long stick - if there was such a thing as a 6" diameter
cylindrical shape I reckon it would stay in place by friction.

??? BUT YOU MAY HAVE OTHER SUGGESTIONS PERHAPS ???


Andrew
What you want is a gian condopm filled with expanding foam ;-)

--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

"The Natural Philosopher" wrote in message
...

On 21/05/15 14:03, Andrew Mawson wrote:
My workshop is a converted barn with corrugated fibre cement sheeting
roof. It's been sprayed with expanding foam and when they did it they
assured me that they'd sealed the apex where there is a 'top hat' shape.

Well they obviously didn't - I recently had an enormous bonfire ( 1/2
mile of Leydandii hedge top and there is a line of 'fall out' ash down
the length of the workshop. So if the ash blew in then my heat MUST be
able to go out !

No chance of getting them back, as access is now very difficult with all
the machines in place, and I don't want them covered in foam anyway !

SO - my thought was some form of insulating sausage that I can poke up
there with a long stick - if there was such a thing as a 6" diameter
cylindrical shape I reckon it would stay in place by friction.

??? BUT YOU MAY HAVE OTHER SUGGESTIONS PERHAPS ???


Andrew
What you want is a giant condom filled with expanding foam ;-)


The prize goes to TNP for his giant condom suggestion - now where did I
leave my giant condoms .......

A/ Can't take ridge off - all glued together with 100 mm sprayed foam from
inside

B/ No room for scaffold towers - all packed together too tightly and HEAVY

C/ The gap is very irregular so whatever I use needs to be able to conform
and yet grip - I don't think anything in slippery polythene sheet / carrier
bag will stay up there long


Now stop messing about and find me a 6" diameter cylindrical 18 metre long
bit of light coloured expanded foam polyethylene, preferably free - how hard
can it be

Andrew

On 22/05/2015 09:26, Andrew Mawson wrote:
"The Natural Philosopher" wrote in message
...

On 21/05/15 14:03, Andrew Mawson wrote:
My workshop is a converted barn with corrugated fibre cement sheeting
roof. It's been sprayed with expanding foam and when they did it they
assured me that they'd sealed the apex where there is a 'top hat' shape.

Well they obviously didn't - I recently had an enormous bonfire ( 1/2
mile of Leydandii hedge top and there is a line of 'fall out' ash down
the length of the workshop. So if the ash blew in then my heat MUST be
able to go out !

No chance of getting them back, as access is now very difficult with all
the machines in place, and I don't want them covered in foam anyway !

SO - my thought was some form of insulating sausage that I can poke up
there with a long stick - if there was such a thing as a 6" diameter
cylindrical shape I reckon it would stay in place by friction.

??? BUT YOU MAY HAVE OTHER SUGGESTIONS PERHAPS ???


Andrew
What you want is a giant condom filled with expanding foam ;-)


The prize goes to TNP for his giant condom suggestion - now where did I
leave my giant condoms .......

A/ Can't take ridge off - all glued together with 100 mm sprayed foam
from inside

B/ No room for scaffold towers - all packed together too tightly and HEAVY

C/ The gap is very irregular so whatever I use needs to be able to
conform and yet grip - I don't think anything in slippery polythene
sheet / carrier bag will stay up there long


Now stop messing about and find me a 6" diameter cylindrical 18 metre
long bit of light coloured expanded foam polyethylene, preferably free -
how hard can it be

Andrew

I'm not clear how small the gaps are, probably too big for "wall
insulation" polystyrene beads? Could you get something like vacuum
cleaner hose to the far end, and blow in packaging "peanuts",
withdrawing the hose as it fills up? Or could you just get a cavity wall
firm to blow fibre into there?

How about getting some 6 inch 500 gauge polythene tubing and making up
"sausages" say about 2 metres long. Fill with shredded upholstery foam
leaving one end open. Attach a vacuum pump and shink down to ~ 2 inch
OD. Poke to the end of the space. Remove vacuum. Pull out vacuum hose
now that sausage is "stuck". Repeat. (This has the merit that you could
be using fire retardant material).

You will have seen the PU foam in a canoe video no doubt. Try something
like that and you might blow the ridge tiles off so then you would
*have* to get the roofers in :-)

newshound wrote:

You will have seen the PU foam in a canoe video no doubt.

There's video?

In message , Andrew Mawson
writes

The prize goes to TNP for his giant condom suggestion - now where did I
leave my giant condoms .......

I'm not so sure that is a daft idea - condoms can be blown up to a huge
size, he says, remembering youth club antics, many years ago. Filling a
condom with air is probably a little easier than stuffing one with loft
insulation, though :-)

What you need is one of those large funnel things that are used to
encase Christmas trees in netting. Stretch the condom over the funnel,
stuff with insulation and then have a long row of condoms up in the
roof. Help protect the workshop from STDs, too :-)
--
Graeme

"News" wrote in message ...

In message , Andrew Mawson
writes

The prize goes to TNP for his giant condom suggestion - now where did I
leave my giant condoms .......

I'm not so sure that is a daft idea - condoms can be blown up to a huge
size, he says, remembering youth club antics, many years ago. Filling a
condom with air is probably a little easier than stuffing one with loft
insulation, though :-)

What you need is one of those large funnel things that are used to
encase Christmas trees in netting. Stretch the condom over the funnel,
stuff with insulation and then have a long row of condoms up in the
roof. Help protect the workshop from STDs, too :-)



"News" wrote in message ...

In message , Andrew Mawson
writes

The prize goes to TNP for his giant condom suggestion - now where did I
leave my giant condoms .......

I'm not so sure that is a daft idea - condoms can be blown up to a huge
size, he says, remembering youth club antics, many years ago. Filling a
condom with air is probably a little easier than stuffing one with loft
insulation, though :-)

What you need is one of those large funnel things that are used to
encase Christmas trees in netting. Stretch the condom over the funnel,
stuff with insulation and then have a long row of condoms up in the
roof. Help protect the workshop from STDs, too :-)


Hopefully this is a link to a picture of the 'apex gap' :

https://www.dropbox.com/s/o7czysxiil...x-Gap.jpg?dl=0

Andrew

On 22/05/2015 10:28, Andrew Mawson wrote:
"News" wrote in message ...

In message , Andrew Mawson
writes

The prize goes to TNP for his giant condom suggestion - now where did
I leave my giant condoms .......

I'm not so sure that is a daft idea - condoms can be blown up to a
huge size, he says, remembering youth club antics, many years ago.
Filling a condom with air is probably a little easier than stuffing
one with loft insulation, though :-)

What you need is one of those large funnel things that are used to
encase Christmas trees in netting. Stretch the condom over the
funnel, stuff with insulation and then have a long row of condoms up
in the roof. Help protect the workshop from STDs, too :-)



"News" wrote in message ...

In message , Andrew Mawson
writes

The prize goes to TNP for his giant condom suggestion - now where did
I leave my giant condoms .......

I'm not so sure that is a daft idea - condoms can be blown up to a
huge size, he says, remembering youth club antics, many years ago.
Filling a condom with air is probably a little easier than stuffing
one with loft insulation, though :-)

What you need is one of those large funnel things that are used to
encase Christmas trees in netting. Stretch the condom over the
funnel, stuff with insulation and then have a long row of condoms up
in the roof. Help protect the workshop from STDs, too :-)


Hopefully this is a link to a picture of the 'apex gap' :

https://www.dropbox.com/s/o7czysxiil...x-Gap.jpg?dl=0

Andrew

Oh well in that case I would just get some "layflat" polythene tube and
a big pack of fire-retardant polyurethane foam upholstery chips and make
your own sausage. I had visions that you had to fill the gap axially,
starting from one end! I can't see that polyene is going to slide out
once it is stuffed in firmly with the right amount of packing.

S

In message , Andrew Mawson
writes
What you need is one of those large funnel things that are used to
encase Christmas trees in netting. Stretch the condom over the
funnel, stuff with insulation and then have a long row of condoms up
in the roof. Help protect the workshop from STDs, too :-)


Hopefully this is a link to a picture of the 'apex gap' :

https://www.dropbox.com/s/o7czysxiil...x-Gap.jpg?dl=0

Hmm.. If you use expanding foam if should be fire resistant which is
'kin expensive.

I am still surprised that you can't get safe access. Builders
bandstands? You can span more than 4' with crawling boards.

Hand trim the existing foam to form a wedge socket. Cut some PIR
insulation into strips to fit.

--
Tim Lamb

Andrew Mawson wrote:
Hopefully this is a link to a picture of the 'apex gap' :

https://www.dropbox.com/s/o7czysxiil...x-Gap.jpg?dl=0

Andrew

If the weight would not be excessive I wonder if you could "roll your
own" from:

a. floor protector roll - eg
http://www.toolstation.com/shop/Pain...or+Roll/p26215
b. loft insulation (folded over at ends to reduce gaps between
sections); and
c. a "former" to provide rigidity - eg sections of 40m waste,
drainpipe?


--
Robin
reply to address is (meant to be) valid

On 22/05/2015 00:09, The Natural Philosopher wrote:
On 21/05/15 14:03, Andrew Mawson wrote:
My workshop is a converted barn with corrugated fibre cement sheeting
roof. It's been sprayed with expanding foam and when they did it they
assured me that they'd sealed the apex where there is a 'top hat' shape.

Well they obviously didn't - I recently had an enormous bonfire ( 1/2
mile of Leydandii hedge top and there is a line of 'fall out' ash down
the length of the workshop. So if the ash blew in then my heat MUST be
able to go out !

No chance of getting them back, as access is now very difficult with all
the machines in place, and I don't want them covered in foam anyway !

SO - my thought was some form of insulating sausage that I can poke up
there with a long stick - if there was such a thing as a 6" diameter
cylindrical shape I reckon it would stay in place by friction.

??? BUT YOU MAY HAVE OTHER SUGGESTIONS PERHAPS ???


Andrew
What you want is a gian condopm filled with expanding foam ;-)

That was my thought, where an appropriately sized polythene tube can be
put in place and filled with expanding foam in situ. Or done in parts?

On 21/05/2015 14:03, Andrew Mawson wrote:
My workshop is a converted barn with corrugated fibre cement sheeting
roof. It's been sprayed with expanding foam and when they did it they
assured me that they'd sealed the apex where there is a 'top hat' shape.

Well they obviously didn't - I recently had an enormous bonfire ( 1/2
mile of Leydandii hedge top and there is a line of 'fall out' ash down
the length of the workshop. So if the ash blew in then my heat MUST be
able to go out !

No chance of getting them back, as access is now very difficult with all
the machines in place, and I don't want them covered in foam anyway !

SO - my thought was some form of insulating sausage that I can poke up
there with a long stick - if there was such a thing as a 6" diameter
cylindrical shape I reckon it would stay in place by friction.

??? BUT YOU MAY HAVE OTHER SUGGESTIONS PERHAPS ???


Andrew


The insulation firebreaks you tack around windows (to stop fire tack up
the cavity) may do he ... insulation in a plastic sausage.