Vaulted Roof Insulation Detail

Fiberglass insulation comes in lightweight batts and rolls precut to widths that match standard stud and rafter spacing.

Vaulted roof insulation detail.

Flat roof cathedral ceiling we re going to give it a try. Below is 1x decking and 2x4 rafters. The insulation is not affected by water. Nail 1 furring along every rafter side against the roof deck.

Vaulted ceilings can be constructed by either stick framing which means attaching each joist and rafter individually or by setting roof trusses that come engineered from a truss manufacturer with. After it sets spray foam insulation forms a rigid durable barrier to prevent the warm air that s inside your living area from exiting through the vaulted ceiling where it no longer has chance to create damp or mould. Among the easiest options is to install rigid insulation sheets over the rafters which not only provides insulation but also the structural function of enclosing the roof. Our plan is to put rigid board up between the 2x4 s caulk the edges and then hang sheetrock.

Existing is a fourteen year old roof with 2 of closed cell roofing foam with an acrylic elastomeric coating. Cut and insert 1 or thicker high r foam insulation sheets r 8 per inch against the furring giving a 1 or greater air path between the insulation and the roof deck under the cathedral ceiling. Insulating a vaulted ceiling is similar to insulating exterior walls with.