At the bottom points of the triangles the rafters meet the top plates of the exterior walls.
Walls in attic.
If your attic space is framed with rafters and is unfinished it has a triangular shape.
It will not bear any loads.
Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Support and follow me.
Carefully measure where each of the new wall studs will go and mark the locations with perpendicular lines across the plates.
An attic wall needs to be located near the joists and studs so it can be held in place properly.
If building a knee wall for storage like karl did with this project make sure to insulate that area as well.
Knee walls are not found in all attics and they are not absolutely necessary.
Staple insulation between the wall studs and ceiling joists image a.
It needs a certain amount of loft to work properly.
Two by four lumber is standard for framing most walls including short walls in the attic.
Purchase enough to install a stud on each end of the wall and every 16.
Your attic wall will not be a supporting wall.
But they are awfully good to have.
Framing basics for attic knee walls along the sides of your loft or attic space.