My garage has three solid stone walls with old lime motar. it is dusty and cold.
I would like to line the walls and my proposal is to batten it out with 3 x 2 timber put rockwool insulation between them, line it with Sterling or OSB board, perhaps 12mm. I may well do the same for the ceiling.

My slight concern is fire resistance or rather the lack of it. The garage is detached and away from the house and I know that there are many timber only garages.
Any sort of fire resistant boarding is very expensive and not readily available. I guess there are fire retardent paints but I have no experience of them.

So.......am I being paranoid and should I just get on with it. I guess it depends what I'm using it for and the answer is storage/workshop but I don't envisage doing any welding in there or any other such fire raising activities.

Plasterboard is surely not much more expensive than Sterling, although obvously not as hard-wearing if that's a concern.

quote:

---

Originally posted by matt_claydon
Plasterboard is surely not much more expensive than Sterling, although obvously not as hard-wearing if that's a concern.

---

use plaster board, silver backed stuff, it's fast to install and easy to fix

More important is the ceiling as that where all the heat goes and bellow waste height you don't really loose much to the walls. As for fire proof, plasterboard is tough stuff to set fire to tbh unless you are pointing a blow torch at it nothing is going to happen and apart from the paper doesn't even burn (tried to get rid of some that way)

Strilingboard will get damp, swell and buckle on a wall, it also burns well due to all the glue used in making it

[Edited on 9/2/11 by Mr Whippy]

I'd use foil backed plasterboard and preferably a solid insulation like cellatex etc. You can buy insulation cheap as seconds from people like sheffield insulations. http://www.sheffins.co.uk/

Plenty of battens at fixing point heights to make life easy later on

As mentioned above, sort your ceiling too in the same way!

[Edited on 9/2/11 by Strontium Dog]

Thanks All.
Plasterboard it is then.

You can get high performance composite plaster board. It's 12.5mm of board with a thickness of solid insulation bonded on the back. The cheapest is polystyrene, but if you go for the next level up, you can get closed cell, like Celotex which will act as a vapour barrier and reduce the likelyhood of condensation. You can get various thicknesses of insulation, from around 15mm up to 75mm (IIRC).

It's easy to use, there is only 1 board to fix, rather than 2, and because the insulation is bonded to the board, it gives it additional impact strength over standard PB.

HTH

Mike

What about those reclaimed hoarding boards? made from recycled plastic (chopped up and reformed stuff). Not sure of price but would be moisture resistant.