Attic Room Knee Wall Height

The short wall creates a usable room within the attic while eliminating spaces of the wrong shape or size.

Attic room knee wall height.

Common heights of knee walls most knee walls are constructed to reach a height of 36 to 42 inches. Knee walls the walls that separate conditioned from unconditioned space in an attic can be a source of significant air leakage if a continuous air barrier is not provided to prevent unconditioned air from flowing under the knee wall and under the floor boards of the attic room. You can see the image below for an example of a knee wall. This wall is prevalent wherever there are ceiling height changes in the space below such as having a room with 12 foot ceilings next to a room with 10 foot ceilings or in a space with coffered ceilings where very short knee walls may exist or the separation between a cathedral ceiling and an adjacent flat ceiling where the height of the knee wall may go from nothing to three or four feet and often in a situation where there is an attic adjacent to second story space where part of the.

Knee walls are short usually wooden walls installed around the sides of an attic where the rafters meet the floor. This generally fits areas such as under the eaves of roof lines. In most instances they are no taller than 3 feet but some builders may custom fit them according to the roof s shape and size. A knee wall is a short vertical wall roughly two or three feet high that blocks in that useless triangular space.

The higher the knee wall the greater the amount of useful wall space you create in your finished attic. Knee walls may support counters or bars and a half height knee wall that borders a stairway and follows the slope of the stairs can function as a stair rail. Bonus rooms are often the least comfortable room in a house and the main reason is that they are the most flawed part of the building envelope especially the attic kneewalls. As is the case with other types of short walls these walls are also sometimes called pony walls.