Framing An Attic Knee Wall

Seal all the edges penetrations and seams.

Framing an attic knee wall.

Positioning the knee walls close to the exterior walls of the building will increase the area of the attic space but will make the knee wall shorter. Cut six lengths of 2x4 each 2 1 2 feet long. Use a template to determine the angle on each of those six pieces of 2x4. Cover the whole wall.

Use a miter. How to frame knee walls under rafters. Framing basics for attic knee walls along the sides of your loft or attic space. One of your 2x4s.

Measure and mark the rafters at each end of the attic with the desired height of the knee wall. Here are the three keys to sheathing an attic kneewall properly. Set the chest onto the sill and slide it into the hole in the wall. Draw a line across that angle.

1 a continuous air barrier can be installed on the exterior of the kneewall framing from the top of the knee wall down to the attic floor including the spaces between the attic floor joists from the bottom of the knee wall to the ceiling deck below or 2 a continuous air barrier can be installed along the underside of the attic roofline from the top of the knee wall to the top plate of the home s exterior wall. Push it straight back until it s flush with the finished wall surface. The knee wall forms the wall of the attic room and it also creates an enclosed space under the eaves behind the wall. Ideally confirm that the marks are level with.

Screw two support braces to the attic floor right behind the knee wall. Build the supports out of 2x4s making sure they re flush with the sill of the cutout. Moving the wall close to the center of the. 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 it is shorter than a full height wall.

There are two ways to block off this air flow. Step 9 insert dresser photo by geoffrey gross. Support and follow me. Hold up to the rafter a scrap piece of 2 by 4 lumber a few inches longer than the planned knee wall height.