I am building a timberframe chalet style bungalow. I want to do the insulating and tacking in the bedrooms in the roof void myself. I have been supplied all the insulating materials and was told to use the 90mm celotex sheets and 80mm glasswool insulation rolls together in the sloping ceiling. I have 2 questions.
Do I have to insulate with the celotex first then glasswool or can I use the celotex to hold the glasswool up?
And secondly, do I stop the insulation of the sloping ceiling where it meets the flat ceiling (above which is the roof void)?
Do I have to insulate with the celotex first then glasswool or can I use the celotex to hold the glasswool up?
And secondly, do I stop the insulation of the sloping ceiling where it meets the flat ceiling (above which is the roof void)?