How To Install Insulation Between Roof Rafters

If you have a solid floor covering the roof rafters use the claw end of a hammer to pull the floor up in several locations and blow the insulation under the boards.

How to install insulation between roof rafters.

As this requires fitting insulation above the rafters the roof covering will have to be removed in order to fit the insulation. Modern u value targets mean installing insulation between rafters only is rarely a viable option. When you use solid insulation board to create a warm loft the key thing to remember is ventilation you must keep a 50mm gap between the roof and the rigid insulation board. Measure the space between the rafters where the insulation will be placed and cut the insulation boards marginally wider than the space to ensure a friction fit upon installation.

Apply insulation between rafters when finishing an attic into a heated room or when building a cathedral ceiling in the home. How to install rafter insulation. We would always recommend having a breathable membrane in place between the tiles and the rafters too to allow the roof to breathe. To create a warm pitched roof insulation such as kingspan kooltherm k7 pitched roof board should be fitted between and over the rafters.

It allows insulation to be installed in a watertight roof either after the roof covering has been fixed on a new build or without disturbing an otherwise sound existing roof covering as part of a renovation. Garages built without attics are. Then blow another layer on top of the roof rafters.