Recent content by danchapmanme

Yes to full fill?

I have a internal stud wall using 4x2 timber. Can I completely fill the void using 100mm think insulation or do I need to allow for any air flow? Thanks.

Thanks. I'll check if its a vented cavity behind the PVC. If it is, how much insulation would I use between the studs? Do I fill half the cavity e.g. 50mm? Should I use Celotex (GA4000)? I have just read up on Fermacell. It can replace timber sheets, providing racking strengh. So new...

My 1970's house has external timber walls upstairs. The walls consists of the following elements, from outside in: 1) PVC cladding 2) Felt (Looks like roof felt) 3) 4x2 timber studs 4) 50mm polystyrene (as insulation) 5) 6mm plywood I was considering replacing the polystyrene...