What is the best way to insulate a pent roof.
Obviously, I can't lay insulation externally so will have to tackle from the underside/warmside.
I am aiming to take down the existing T&G boarding to the ceiling in the single storey lean to and will proceed to insulate, vapour barrier and then plasterboard.
I can't figure which is the best insulation method & product to use.
Do you fix to the joists or battens (using rigid sheeting insulation) or, is there any method for laying wool insulation etc. ?