Insulating a cold bedroom above a garage

[thechauffeur]

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.

[albaqwerty]

I've googled and amongst others I've found
www.permasealuk.co.uk

[albaqwerty]

(and back to the link not working, sorry)

[Mamyalynne]

http://www.permasealuk.co.uk/

[albaqwerty]

Thanks Mamya, I know what I've done wrong xx
(Force of habit not to copy the correct part)

[Mamyalynne]

Is ok.

[HowardKennitby]

Are you intending to replace the plasterboard yourself?

[Mosaic]

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.....

[The Builder]

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.

[The Builder]

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.

[thechauffeur]

Many thanks to one and all

[BRIGHT SPARK]

What TB said, but you must use fire rated plasterboard..sometimes double boarded... as its the only barrier between the garage and a bedroom.

[HowardKennitby]

^

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.

[The Builder]

Either that Howard, or use what His BRIGHTness has mentioned ....... "Fireboard" ............. a fire-resisting plasterboard.