Insulate Roof Or Above Ceiling In Eaves

Everywhere but climate zone 1 building codes require the installation of ceiling insulation rated at r 38 or r 49.

Insulate roof or above ceiling in eaves.

This is the point where the roof meets the walls of the house and it s one place where small gaps and cracks are commonly found. 2d extend insulation into joist space to reduce air flows. A warm loft is where you insulate immediately under the roof which means your loft space is warm as well. A cold loft is where you insulate immediately above the ceiling of the top storey so no.

For the same reason insulation shouldn t touch the roof s underside. Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. Achieving these r values with cellulose or fiberglass requires at least 11 inches of insulation for r 38 or 14 inches for r 49.

In finished attic rooms with or without dormer insulate 2a between the studs of knee walls 2b between the studs and rafters of exterior walls and roof 2c and ceilings with cold spaces above. On a positive note congratulations on having 24 inch eaves. In cold climates thin insulation near the eaves contributes to ice dams. In most of the u s.