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Insulating a cold bedroom above a garage

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thechauffeur | 15:25 Wed 17th Oct 2012 | DIY
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I intend to take down the ceiling in my garage and put in insulation then replace with new plasterboard. I sometimes watch a programme on Discovery called Holmes on homes which is set in Canada where they frequently do this sort of thing but they use a blue spray foam to insulate and this stuff gets in all the cracks as it expands. Is this sort of product available in the u.k and if so where would I find it? Many thanks in advance.
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I've googled and amongst others I've found
www.permasealuk.co.uk
(and back to the link not working, sorry)
Thanks Mamya, I know what I've done wrong xx
(Force of habit not to copy the correct part)
Is ok.
Are you intending to replace the plasterboard yourself?
Just a thought, and something that might be easier to achieve.
What's the garage door made of? And do you use the garage for a car? we had a metal up n over door for years and it had no insulation effect and draughts whistled all round it. Even frogs got in.
We got it replaced with a snug-fitting proper double door and that, with the little oil-filled radiator plugged in, makes it lovely, warm, dry and frogless. The room above has benefitted and you might find a similar benefit at less cost and effort than working at height above your head. I'm thinking achey breakey arms.....
Products such as Permaseal are usually used where you want to insulate at high level on or between the roof rafters. I'm assuming you're intending to remove a regular horizontal ceiling and replace it with plasterboard.
If so, then conventional loft roll would be all you need. A layer of 150mm plus a layer of 100mm to give 250mm.

As Moses has said, draught proofing is most important. If you're looking for a foam to fill odd gaps and edges, then spray foam is available in cannister form...........

http://www.screwfix.c...9137845!1350492490252

Alternatively, "Celotex" or "Kingspan foam board (2400 x 1200mm ..... 8'x4') laid over the ceiling joists plus foam.

Or, a modern Multifoil (like a big silver duvet) stapled over the joists ... all edges taped.
Sorry ............ I've just noticed the "bedroom" bit. Loft roll, Celotex, or multifoil BETWEEN the joists.

You could get someone in to spray Permoseal, but it would cost a lot more.
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Many thanks to one and all
What TB said, but you must use fire rated plasterboard..sometimes double boarded... as its the only barrier between the garage and a bedroom.
^

That is what I was considering. I understand that the regulations on fireproofing in that situation are quite strict.
I have heard that it is double layer 12.7mm plasterboard separately nailed and with no coincident seams between the layers.
Either that Howard, or use what His BRIGHTness has mentioned ....... "Fireboard" ............. a fire-resisting plasterboard.

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