Framing Angled Attic

Eliminate guesswork make a full size drawing of the gable wall on the floor of your garage or attic.

Framing angled attic.

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 rise or height of the roof at its peak is the altitude of the triangle. The plywood will create a smooth strong ceiling without having to apply drywall tape and mud to the ceiling. Then add the 2 4 side walls and the roof slope using a square.

Begin with a baseline and snap a center line perpendicular to it. One half of 45 is 22 5. And the line length measurement from the roof peak to the building wall is the hypotenuse. Run the plywood down to the top of the knee wall.

Use the 3 4 5 triangle method to make the 90 degree angle. 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. If you want your attic space to have a flat ceiling you ll need to add collar ties to the framing. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.

The central angle for an octagon roof is 45. However the wall must be built 1 4 inch shorter than. Collar ties are horizontal members that like rafter ties extend from rafter to rafter but.