Attic Truss Knee Wall

How much extra money do attic trusses cost.

Attic truss knee wall.

The structure should be sufficiently wide to allow for a loft and attic spaces the loft area must be on a living floor and have attic rooms on both sides separated by knee walls a flat ceiling in the loft area and a floor below steep enough roof pitch to provide appropriate ceiling height for the loft area. Unlike other kinds of knee walls this kind of wall extends all the way to the rafters but because of the slope of the roof. Certain conditions must be met before an attic truss can be built. An attic knee wall is a short wall that extends from the floor of an attic room to the roof rafters.

You can see the image below for an example of a knee wall. Whatever you do don t put insulation directly against the roof you could cause a condensation point and rot the roof deck. 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. The home where i recently conducted the energy audit used the knee wall space for a ductwork chase from the forced air furnace.

Dec 1 2013 explore steven tayse s board knee wall ideas on pinterest. These prices change with the demand for lumber. It may make sense in a warm climate but not in cleveland where i am. There is a connection between the unconditioned knee wall space of the attic truss and this common wall between the attic truss living space and this room.

For the 50 foot long room you ll need about 24 trusses. See more ideas about knee wall attic rooms attic remodel. How about heating the space. My guess is that the national average for an attic truss that will create the space we just described will cost you about 100 more than a regular common truss.

Knee walls are short usually wooden walls installed around the sides of an attic where the rafters meet the floor. If dead loads must be hung from trusses then extra support can be provided by installing support beams perpendicular to the trusses reducing the span of the bottom chords and increasing their ability to carry the weight load. The knee wall forms the wall of the attic room and it also creates an enclosed space under the eaves behind the wall.