Knee Wall Attic Access Door Insulation

Energy star qualified r 5 rated knee wall door.

Knee wall attic access door insulation.

Knee wall doors provide access through the knee walls to the unconditioned parts of the attic. Blown insulation in the knee wall and top attics. You can buy knee wall doors that have built in insulation and weather stripping. The knee wall access doors may be installed in right or left opening versions.

An attic hatch also known as a scuttle hole is simply a panel in the ceiling that can be removed for access. The knee wall access door dwk is intended to be built into l shaped walls. We reduced the air leakage nearly 50 on this house in shaker heights without insulating the walls. Insulate the sloped ceiling.

A knee wall attic door is infamous for being leaky and all too often left without insulation. These doors need to include thick insulation for example several layers of rigid foam glued to the back of the door a tight threshold good weatherstripping and a latch that pulls the door tightly shut. We prefer cellulose but we use fiberglass sometimes too. Then cover that same area with an r 8 fsk affixing it using cap nails.

Pre hung on an exterior grade 1 1 4 x 4 9 16 door frame with q lon weather stripping. Superb thermo insulating parameters r value 5 2 along with high air tightness keep heat loss to a minimum. 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. 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.

Many knee wall doors have built in weather stripping and insulation. Rake walls it s easier to handle than plywood or thermo ply and still gives you an r 19 r121 assembly. Depending on your experience with construction insulation and especially attic insulation airflow a homemade cover box is unlikely to provide the same amount of benefit as an approved purpose built attic cover. In tight attics or odd shaped wall conditions i e.

1 3 8 thick foam filled door. Another alternative for knee walls conditions is to remove and reinstall the batt insulation to qii standards. Added bonus the floor of this knee wall leaked too so there is a line of foam just above the floor joist. As standard the door is provided with lining slats.

Access doors need to be detailed like exterior doors.