Shaft Framing
With the window installed,
the shaft is all that's left to frame. It helps support the window and
provides framing for the drywall.
Reinforce under the four corners and support the side framing every
16" by beveling or notching 2x4s or 2x6s, nailing them to the headers
and studs.
After toenailing the studs in, insulate the cavity and install a vapor
barrier. That completes the roof window installation. Now the shaft
is ready for
drywall.