To build your walls to the correct length measure the angle of the rafter by laying a piece of 2x4 inch lumber against the side of the rafter in a vertical position.
How to build a knee wall in an attic.
How to construct knee walls in attics.
Caulk all other holes or cracks or stuff with fiberglass batt insulation or spray foam.
The knee wall in an attic drops down from the rafter to hide the pointed angle where the rafter meets the attic floor and to make the attic feel a bit more like a regular room.
The knee wall will be built on the floor of the attic and then tipped into place against the rafters.
Cover rafters with an air barrier.
Step 1 measure the attic.
Determine the location and line of the of the wall based on.
Mark the line that the angle forms along your 2x4.
Cut six lengths of 2x4 each 2 1 2 feet long.
Draw a line.
The space behind.
Access the attic using a stepladder at the attic access panel or the attic stairs.
One of your 2x4s will act as the bottom of.
To reduce air infiltration the u s.
Use a template to determine the angle on each of those six pieces of 2x4.