which of the following insulating materials that are used in roofs ( foil, fibreglass batts, seaweed) work by trapping a layer of air in them??
you should make sure to put baffles in against the roof over the eves before you fill it in you do need to get ventilation into the attic or you will cause more damage
220mm of fibreglass insulation is best for roof space insulation. make sure to cover entire roof space any gaps around Eaves will cause condensation.
