Collar ties are horizontal members that like rafter ties extend from rafter to rafter but.
Framing an attic ceiling.
If you have attic trusses not conventional trusses the members will be sized to support living space.
Space these boards 4 ft.
Friction fit insulation between and parallel to the attic framing members.
Attic floor framing attic floors are made with floor joists or with truss members.
Ensure ends of insulation are butted together and flush to underside of framing.
However in some cases the joists are intentionally built strong enough for the homeowner to later build out the attic.
Nail the 2 by 4s to the top of each ceiling joist with 2 16d nails.
Apart and attach the ends to the ends of the rafters.
The ceiling load may include items like drywall ducts recessed lights bathroom fans and attic insulation.
Ensure insulation extends to the outside edge of the exterior top plates and to the peak of the cathedral ceiling.
If you want your attic space to have a flat ceiling you ll need to add collar ties to the framing.
Install and paint the ceiling 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.
The plywood will create a smooth strong ceiling without having to apply drywall tape and mud to the ceiling.
Run the plywood down to the top of the knee wall.