Air sealing windows and doors
- Ensure that all the cavity insulation is in place
- Fit cavity closer insulation to mitigate thermal bridging
- Seal the edges of the insulation anf fit the next layer immediately behind the cavity lining.
- I used painters caulk to stop air ingress berween the frame and the lining board.
- Seal any internal corners
- Finally fit the lining material, in my case plasterboard