Framing Angled Attic

The easiest method of framing a wall is to build it on the floor and erect it ensuring it s plumb straight up and down before securing.

Framing angled attic.

The central angle for an octagon roof is 45. The rise or height of the roof at its peak is the altitude of the triangle. Begin with a baseline and snap a center line perpendicular to it. 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 framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. The run or half the building span is the base of the triangle. One half of 45 is 22 5. The plywood will create a smooth strong ceiling without having to apply drywall tape and mud to the ceiling.

Use the 3 4 5 triangle method to make the 90 degree angle. Collar ties are horizontal members that like rafter ties extend from rafter to rafter but. Run the plywood down to the top of the knee wall. However the wall must be built 1 4 inch shorter than.

Eliminate guesswork make a full size drawing of the gable wall on the floor of your garage or attic. Then add the 2 4 side walls and the roof slope using a square. If you want your attic space to have a flat ceiling you ll need to add collar ties to the framing.