If you want your attic space to have a flat ceiling you ll need to add collar ties to the framing.
Framing protruding attic wall.
In evaluating wall framing you ll be looking for walls that are out of plumb or not flat or straight.
Fasten the bottom plate by driving 16d nails through it into the floor.
Set the header on the trimmers and nail through the king studs to hold it in place.
Nail the end studs to framing in the existing wall.
Collar ties are horizontal members that like rafter ties extend from rafter to rafter but.
Allow for a top and.
Then measure and nail the cripples into place.
Two by four lumber is standard for framing most walls including short walls in the attic.
In wood framing basics and wall plans that have openings with cripples above the header cut and nail together the king studs and trimmers first.
Purchase enough to install a stud on each end of the wall and every 16 inches between.
As you shim and plumb each section of wall drive 16d nails through the top plate into the framing with a hammer or nail gun.
The plywood will create a smooth strong ceiling without having to apply drywall tape and mud to the ceiling.
If you see protruding drywall in a tall wall look to see if it s at the same height as the floor joists.
Score the shims with a utility knife and snap them off flush with the plate.
Use screws to attach sheets of birch plywood to the angled ceiling over the insulation making sure to drive the screws into the ceiling joists.