Knee Wall Attic Access Door Insulation

Blown insulation in the knee wall and top attics.

Knee wall attic access door 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. 1 3 8 thick foam filled door. We reduced the air leakage nearly 50 on this house in shaker heights without insulating the walls. Access doors need to be detailed like exterior doors.

Insulate the sloped ceiling. 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. You can buy knee wall doors that have built in insulation and weather stripping. Rake walls it s easier to handle than plywood or thermo ply and still gives you an r 19 r121 assembly.

Despite both of these attic doors being easy to insulate many contractors don t do it. R 10 rated 2 1 4 thick foam filled doors available. A knee wall attic door is infamous for being leaky and all too often left without insulation. Then cover that same area with an r 8 fsk affixing it using cap nails.

The knee wall access door dwk is intended to be built into l shaped walls. The knee wall access doors may be installed in right or left opening versions. In tight attics or odd shaped wall conditions i e. Another alternative for knee walls conditions is to remove and reinstall the batt insulation to qii standards.

Superb thermo insulating parameters r value 5 2 along with high air tightness keep heat loss to a minimum. How to seal knee wall doors. Energy star qualified r 5 rated knee wall door. 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. Added bonus the floor of this knee wall leaked too so there is a line of foam just above the floor joist. Pre hung on an exterior grade 1 1 4 x 4 9 16 door frame with q lon weather stripping. An attic hatch also known as a scuttle hole is simply a panel in the ceiling that can be removed for access.

As standard the door is provided with lining slats.