Gable Roof Rafter Layout

Plumb and seat cuts complete the bird s mouth.

Gable roof rafter layout.

Steeper roofs require more materials to build. The drawings and the size of the rafters are generated in real time. Here we have a wood framed gable roof. Most gable roofs have a slope between 3 12 in 7 6 30 5 cm vertical rise for every 12 in 30 cm horizontally.

This will the first point of the rafter measurement line. From one end of the rafter material using a speed square or framing square mark an x in 12 angle on the rafter and cut it. The right angled notch that fits over the top of the wall is. Measure down y height from the long point of the rafter cut and make a mark.

After you determine the rise span run line length and pitch the next step is to lay out the rafters or mark the cuts on a pattern rafter to create the roof. Roof pitch or slope is measured in a vertical to horizontal ratio. Flip the square to mark the. Enter or select the slope of the common rafters.

The calculator provides online calculate the length of rafters a gable roof. Overhang enter the horizontal overhang including the thickness of the fascia board. Clamp stair gauges to the framing square to align rise and run measurements with the. Use the saltbox roof if you want different overhangs for the front and rear roofs.

The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. Start at the ridge. Rafter layout this article will discuss a gable roof without valleys or dormers because it s the most common and the easiest for a first time builder to tackle. Learn the 1 rafter design that will guarantee your roof that is safe and strong for years to come.

Discover the pros and cons to multiple roof designs. 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. 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. Each rafter is in turn fastened to the top of the exterior structural walls.

Stepping off the rafter step 1. Building width enter the total width of the building. Roof framing rafter layout. Let s consider a basic gable wood roof framing design.

This is our ultimate roof rafter guide for people designing and building an off grid cabin or tiny home.