Good evening everyone,
I am building a new timber frame house. We have a "Vapour Control Layer" on the inner face of all external walls (VCL - 25mm service void - plasterboard) to also act as our airtightness barrier.
What is the VCL/airtightness barrier across my first floor ceilings? I have a traditional "cold roof" design. Just the plasterboard???
Look forward to hearing your views.
I am building a new timber frame house. We have a "Vapour Control Layer" on the inner face of all external walls (VCL - 25mm service void - plasterboard) to also act as our airtightness barrier.
What is the VCL/airtightness barrier across my first floor ceilings? I have a traditional "cold roof" design. Just the plasterboard???
Look forward to hearing your views.