I want to board over my loft for storage, but before I do I ought to improve the insulation which is very old and thin. My UK house is 105yrs old so the rafters are not as high as the recommended thickness of fibreglass insulation.
Adding chipboard direct to the rafters will compress the insulation and reduce it's effectiveness. Do I really have to faff around with yet more bits of wood to raise the boards up further?
How much heat is lost through a double layer of cardboard boxes full of junk, anyway?!