Dry Lining House Walls

[jims-terrano]

This might be one for Rick but happy to take advice off anyone.

My living room has 3 outside walls, the outer skin of the house is stone and the inner skin is breeze block. The house was built in 1969 and at some point one of the owners had cavity wall insulation installed, it’s a kind of foam stuff.

So my question is that I would like to dry line 2 of the walls possibly a stud wall against the existing outside walls with Kingspan type insulation covered in plasterboard.

Is this likely to encourage damp or will this be fine?

Thanks

[solarman216]

Hi Jim what you propose is fine, but to save space why not use polyurethane backed plasterboard and use the normal dry lining method of sticking it on with dabs, Rick

[jims-terrano]

Not thought about that Rick, I was just thinking about having 50mm of Kingspan type insulation to keep some heat in the place. It’s a huge room and the front window must be 12x5 feet so we soon lose heat.

[solarman216]

Down side of studwork is the wood is not as good insulation wise as the Celotex etc, sure you can get 50mm or maybe thicker bonded onto PB then on dabs to the wall it is a solid insulation barrier, downside is fixing heavy items to it, and nearly forgot it is wise to also use around 9 mechanical fixings per board, this is a safeguard in the event of fire, Rick