How To Install Insulation Between Roof Rafters

Garages built without attics are.

How to install insulation between roof rafters.

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. 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. Typically you will fill the insulation blower with the insulation and blow it between the attic floor joists. Fit the cut quinn therm qr insulation boards tightly between the rafters with the quinn therm branded side facing into the building.

Modern u value targets mean installing insulation between rafters only is rarely a viable option. How to install rafter insulation. 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. This roof type will require a breathable membrane like kingspan nilvent to be.

Then blow another layer on top of the roof rafters. As this requires fitting insulation above the rafters the roof covering will have to be removed in order to fit the insulation. Apply insulation between rafters when finishing an attic into a heated room or when building a cathedral ceiling in the home.