I have found Knauf Thermal Laminate Plus Tapered Edge 2400 x 1200 x 27mm which is an insulated plaster board like the celotex pl4000 you suggested.
I might be able to squeeze that in.
Hi,
I have been spending hours trying to work out how best to tackle this problem and am looking for any advice.
I am tying to repair the ceiling of the bay window in my lounge. It is made of a slab of concrete which is tied into the house. There is then a layer of plaster which has...