Gable Roof Framing Detail

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.

Gable roof framing detail.

Take a look at some quick tips and tricks to get your gable wall framed the right way. Connection between top plate and gable end framing. The rise or height of the roof at its peak is the altitude of the triangle. Building trusses on site is easily done for a shed.

After they re up you can snap a line to mark and trim the tails in a nice straight line to make up for any ridge warp or marking cutting and fixing errors. The rafters are angle cut at the ridge end and notched with a birdsmouth where it meets the top plate of the supporting wall. This first installment of a two part series focuses on eaves that do not return onto the gable. The run or half the building span is the base of the triangle.

From the floor to the peak and set back from the front wall of the house about 2 ft. Since 2009 section r602 3 has required that studs shall be continuous from support at the sole plate to a support at the top plate to resist loads perpendicular to the wall. This is now addressed in the international residential code. A stick framed roof uses 2x4 s or 2x6 s or whatever you are framing with but has a ridge board running down the middle ridge line.

Gable roof step by step. Each dormer adds about 30 sq. A simple gable shed roof is often built using 2 4 or 2 6 lumber for the rafters and 2 4 for the collar ties. One is a failure of the hinge at the connection between the top plate of the wall and the gable end framing if the gable end is not balloon framed with continuous studs.

The gable dormers we built are 6 ft. Use 8 penny nails to attach the first 2 in 4 in 5 1 cm 10 2 cm board to the wall studs. We will cover what your top bottom plates should look like in a gabl. If you re a little unsure of your rough framing or roofing skills hire a carpenter to help with this phase of the roof dormer project.

The three primary variables to consider when designing the eaves for a gable roof are the width of the gable trim the projection of the eaves and the details at the corner of the gable ends. Wall plates and joists set out the wall plates to whatever centers you need for your gable roof 400 450 600 or 900 governed by the weight of roof covering ie tiles and cut fix the joists so they are parallel to each other and flush with the back edge of the wall plates. Gable roof framing calculator plan diagram with full dimensions for a good straight fascia add an extra inch or 2 to the tails of all your rafters total length. And the line length measurement from the roof peak to the building wall is the hypotenuse.

Framing the gable ends 1 nail 2 boards onto your walls as top plates.