Insulated Knee Wall Attic Access Door
The doors can be installed in two versions of opening right or left.
Insulated knee wall attic access door. The dwt knee wall access doors are new and highly energy efficient design. Trim is pre installed for fast and easy installation. You can buy knee wall doors that have built in insulation and weather stripping. Bring the attic inside insulating between the rafters simplifies the air sealing details.
Meets the new energy code requirements for the state of georgia. It is r 42 or r 50 insulated triple gasketed pre finished and fits in a 22 x 30 rough opening. The doors as standard are equipped with handle and finishing lining. Attach the rigid foam insulation to the attic side of the door.
Now that the kneewall is located within the home s thermal enclosure it s no longer necessary to air seal electrical boxes or access doors in the kneewall. Use spray foam to air seal these openings if they exist. Pre hung on an exterior grade 1 1 4 x 4 9 16 door frame with q lon weather stripping. Energy star qualified r 5 rated knee wall door.
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. 1 3 8 thick foam filled door. Apply weather stripping to the door to create a seal. Knee wall doors provide access through the knee walls to the unconditioned parts of the attic.
From inside the attic check for any openings holes or fenestrations into the knee wall surrounding area. The 2 5 8 thick sash fully filled with thermo insulating material provides an excellent barrier reducing heat loss r value 9 5. Once you have the materials you can begin to seal and insulate the knee wall access door through these steps. R 10 rated 2 1 4 thick foam filled doors available.