Caulk all other holes or cracks or stuff with fiberglass batt insulation or spray foam.
How to build a knee wall in an attic.
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.
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.
The knee wall will be built on the floor of the attic and then tipped into place against the rafters.
Access the attic using a stepladder at the attic access panel or the attic stairs.
Cut six lengths of 2x4 each 2 1 2 feet long.
Determine the location and line of the of the wall based on.
One of your 2x4s will act as the bottom of.
The space behind.
Determine the length of the knee wall from end to end and double this to determine the lineal footage of.
Use a template to determine the angle on each of those six pieces of 2x4.
Cover rafters with an air barrier.
Consult your local building code and inquire about any necessary permits before beginning any such project.
Department of energy recommends that you complete several steps.
How to construct knee walls in attics.
To reduce air infiltration the u s.