How To Insulate A Roof And Soffit

If the attic is insulated with fiberglass batts just pull back any that are blocking the flow of air.

How to insulate a roof and soffit. To insulate the roof itself you either use spray foam or retrofit with it with rigid foam board. If there s blown in insulation like ours rake back the fluffy stuff with a 3 or 4 ft long 1 x 6 or use a garden rake or hoe. The principle behind soffits is to allow air to circulate in and around the attic. Lay strips of 3 4 inch plywood that are at least 24 inches wide across the floor of the attic.

For the same reason insulation shouldn t touch the roof s underside. Set the baffles inside the attic opening along with a loaded staple gun. In most residential homes the soffit and associated vents is the structural part of the roof that hangs over the side of the home. Insulating and venting when there is no roof soffit.

You need one baffle for each. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. How to keep blow in insulation out of soffits.

Alternatively use two half sheets of 3 4 inch.