Insulating Knee Wall Closet
A knee wall is a short vertical wall roughly two or three feet high that blocks in that useless triangular space.
Insulating knee wall closet. Insulating this space inside the knee wall improves the energy efficiency of the home and prevents heat transfer from the attic. We reduced the air leakage nearly 50 on this house in shaker heights without insulating the walls. The best materials for the attic and thus the knee wall are spray foam fiberglass and cellulose. The higher the knee wall the greater the amount of useful wall space you create in your finished attic.
Framing basics for attic knee walls along the sides of your loft or attic space. When it comes to insulating knee walls you will want to insulate this space using the same material and method as the rest of your attic. 1 use an r value map to determine the amount of insulation you need. Support and follow me.
Although kneewalls can help turn attics into living space they often present insulation challenges most builders install fiberglass batts between the studs and some type of blown insulation between the floor joists. 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. Kneewalls short walls under sloped ceilings are common in story and a half homes and in bonus rooms above garages.
You can buy knee wall doors that have built in insulation and weather stripping. The disadvantage is that it would be very very hard to reach the desired r value from r 49 to r 60 depending on climate for attic insulation. Third many side attic knee wall areas are very restrictive in accessiblity and working height. Insulating and air sealing knee walls unvented version.
This makes is extremely difficult to install a rigid thermal barrier over the stud framing. But you do so at the expense of floor space. 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. Blown insulation in the knee wall and top attics.