We need to increase the insulation in the loft as there's only 100mm of
glass fibre in there at the moment.

I can put another 170mm across the joists quite easily but Management
would prefer to keep a storage area down the middle. A quick look around
the web has produced Space Board -
http://www.space-insulation.com/board.html - which would seem to do the job.

Anyone used it? Any good? Or is there a better/cheaper alternative?

TIA

--
F

(Beware of spam trap - remove the negative)

"F" wrote in message
...
We need to increase the insulation in the loft as there's only 100mm of
glass fibre in there at the moment.

I can put another 170mm across the joists quite easily but Management
would prefer to keep a storage area down the middle. A quick look around
the web has produced Space Board -
http://www.space-insulation.com/board.html - which would seem to do the
job.

Anyone used it? Any good? Or is there a better/cheaper alternative?

Look at the performance. Celotex, Kingspan, etc do similar products. Check
them all out.

On Thu, 06 Mar 2008 14:03:29 +0000, a particular chimpanzee, F
randomly hit the keyboard and produced:

We need to increase the insulation in the loft as there's only 100mm of
glass fibre in there at the moment.

I can put another 170mm across the joists quite easily but Management
would prefer to keep a storage area down the middle. A quick look around
the web has produced Space Board -
http://www.space-insulation.com/board.html - which would seem to do the job.

Anyone used it? Any good? Or is there a better/cheaper alternative?

Its conductivity is 0.029W/mK, so is about 25-30% better than mineral
wool (which is usually between 0.037-0.04). You would need two layers
to give the same U-value as 170mm Rockwool. The 'better' in terms of
insulation value material is PIR (Celotex, Kingspan, Xtratherm, et
al), which has a k-value of 0.023W/mK, but is more expensive.

OTOH, anything is better than nothing, and if the choice is no extra
insulation over the middle or this, I'd go with this.
--
Hugo Nebula
"If no-one on the internet wants a piece of this,
just how far from the pack have you strayed?"

On 08/03/2008 12:15 Hugo Nebula wrote:

Its conductivity is 0.029W/mK, so is about 25-30% better than mineral
wool (which is usually between 0.037-0.04). You would need two layers
to give the same U-value as 170mm Rockwool. The 'better' in terms of
insulation value material is PIR (Celotex, Kingspan, Xtratherm, et
al), which has a k-value of 0.023W/mK, but is more expensive.

Thanks.

I had a look at the Celotex and Kingspan sites yesterday and they seem
to be designed to hide any information useful that might be useful to
me. I emailed them both and Kingspan got back within 30 minutes; I'm
still waiting for Celotex.

Thermafloor TF73 is the nearest I've seen to what might seem to be
suitable but it's got 18mm of chipboard attached.

Kooltherm K7 would seem to be a possibility but I can't see anything in
the literature to say that its mechanical strength would be adequate for
loft storage.

In effect, I don't seem to be able to find the sheets of polystyrene
which would be equivalent to Space Board (nor any Kingspan or Celotex
prices).

--
F

(Beware of spam trap - remove the negative)

On Sat, 08 Mar 2008 14:35:35 +0000, a particular chimpanzee, F
randomly hit the keyboard and produced:

Kooltherm K7 would seem to be a possibility but I can't see anything in
the literature to say that its mechanical strength would be adequate for
loft storage.

I don't think you need to worry on that score; they're all designed to
go under concrete slabs and roof decks, and they all get walked over
on site extensively before that. You may need to lay it on boards to
prevent the ceiling joists digging in, and board over to distribute
the loads.
--
Hugo Nebula
"If no-one on the internet wants a piece of this,
just how far from the pack have you strayed?"