Attic Knee Wall Door Insulation

Added bonus the floor of this knee wall leaked too so there is a line of foam just above the floor joist.

Attic knee wall door insulation.

The 2 5 8 thick sash fully filled with thermo insulating material provides an excellent barrier reducing heat loss r value 9 5. The dwt knee wall access doors are new and highly energy efficient design. Most builders install fiberglass batts between the studs and some type of blown insulation between the floor joists. The latch should lay flush against the frame.

We prefer cellulose but we use fiberglass sometimes too. Knee wall doors provide access through the knee walls to the unconditioned parts of the attic. The attic tent is the ultimate attic access insulation cover ever invented attic stairs scuttle holes knee wall doors and full size doors its primary design is to stop air infiltration between the home and attic the most common medium for wasting costly residential energy during both hot and cold seasons. Kneewalls short walls under sloped ceilings are common in story and a half homes and in bonus rooms above garages.

First you will want to add traditional insulation between the studs this can be batt insulation spray foam or even rigid foam insulation. Knee walls that share space with a conditioned room in your home should have a combination of both traditional insulation and foil radiant barrier insulation. If the door doesn t have these weather strip it to provide a tight seal and make sure the latch pulls tightly against the frame. The doors can be installed in two versions of opening right or left.

Blown insulation in the knee wall and top attics. The doors as standard are equipped with handle and finishing lining. You can buy knee wall doors that have built in insulation and weather stripping. From inside the attic check for any openings holes or fenestrations into the knee wall surrounding area.

Use spray foam to air seal these openings if they exist. What happens then is that the batts don t make contact with the air barrier the drywall air moves through and around them and they fall out of the attic kneewall. We reduced the air leakage nearly 50 on this house in shaker heights without insulating the walls.