Need insulation boards for a bathroom which we can tile on and plaster over!

theirmum

So we are converting the garage and one end is going to be a bathroom ~ we are tiling in the shower and above the sink but everywhere else will be plastered and painted. I need to get an insulation board that is also waterproof? I have found the mormax multiboard is this any good?

phill99

You could always batten the wall out insulate between the battens and secure moisture resistant plasterboard to the battens.

FreeBear

Pavatex woodfibre boards can be plastered & tiled without too much difficulty. Not widely available unless you have an eco builders merchant close by.

Celotex/Kingspan PIR boards are probably going to be your best bet - Google "warm batten" for the quick & easy way to insulate a wall. For the shower area you will want to use a cement board and not moisture resistant plasterboard - British Gypsum do not recommend its use in a shower area. MR PB will do for the rest of the room.