Insulate Roof Overhang

Cover the underside of the cantilever overhang with wood or vinyl material commonly the same material that was.

Insulate roof overhang.

You will need to insulate the walls where that attic meets the bedroom walls also. The only time when insulation is installed between rafters is when icynene is used and everything except the attic floor is insulated. Polystyrene core insulated roof panels great for homes cottages rvs and trailers. Insulating the rest of the overhang the easiest way to insulate an overhang is to fill the gap with pieces of rigid foam from below.

Use 1 inch and 2 inch thicknesses to fill it as much as possible then put a piece of drywall in front to protect it from fire. For the same reason insulation shouldn t touch the roof s underside. Cover the horizontal surface of the overhang as well as the joints where the horizontal surface comes into contact with the air dams. Install rigid foam insulating sheathing at the underside of the overhang see figures 1 3 4 and 5.

Repeat this process with each cantilever cavity until the entire area is insulated. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. By insulating the way you describe you are essentially making the overhang part of the inside of the building envelope. In cold weather you ll notice a big difference almost immediately.

Alternately the floor joist cavities can be filled with closed cell spray foam. Over roof insulation the gable overhang has been cut flush with the wall sheathing. Covering up the soffit vents with loose fill or batts which can happen if you stuff insulation along the eaves is a huge no no. Apply spray foam insulation to the bottom edge of the overhang.

There is also an attic crawlspace above where you tore down the drywall you can see the t g flooring and there should be an access to get in there. These walkable covers offer years of maintenance free protection and guaranteed never rust warp crack or. Install a transition membrane from the existing wall sheathing onto the face of the overhang insulating sheathing. In a way you ve added additional exterior surface area to the structure so more overall area for energy to leak through even if it s insulated.

Spray foam will give the best r value for the confined space. So insulate the overhang from below and then insulate from inside the attic space.