Types of attic insulation
Ceiling Level Attic Insulation
In Homes with pitched roofs and a vacant attic space the most cost effective method is to install two layers of quilted insulation in opposite directions on the floor of the attic. A second method available is to install blown fibre insulating material or spray foam insulation.
Rafter Level Attic Insulation
In Homes where the attic space is converted insulation is installed between the rafters of the roof which creates a warm attic space. Ceiling level and rafter level insulation can be used together where an existing attic space is converted. Spray foam insulation is also an option at rafter level.
Flat Roof Insulation
Flat roofs can be insulated outside or inside. Usually installing insulation with new plaster board slabs and a vapour control layer is the most cost effective solution for flat roofs. If you live in an apartment and are experiencing heat loss it may be beneficial to install this form of insulation at ceiling level to stop heat rising through the ceilings to the benefit of the floor above.