How To Cut Rafters For A Gable Roof

A plumb cut this is an angle to cut that will create a vertically plumb line on the rafter.

How to cut rafters for a gable roof.

Lean to rafters then connect to a ledger board against a wall of another shed or house. The length of rafters length overhang the angle of the saw cut the distance to drinking. Our roof rafter calculator tools are handy for calculating the number of rafters needed rafter length calculator lineal feet of rafter board feed in ridge and sub facia and the total board feet in the roof. Creating a birdsmouth cut is the classic way to prepare a rafter for a hand cut gable or shed roof.

You can use common rafters on any shed roof but they make the most sense when constructing a gable roof or lean to type shed roof where they can sit on or attach to top plates of a wall. A birds mouth is a combination of the two cuts made so the roof rafter sits tightly onto the wall plates square edge. Online calculator produces an accurate calculation of the rafters online calculates the sizes of rafters for the roof. If you re framing a gable roof on a new house or building a shed or even a doghouse with a gable roof you ll need to cut a number of roof rafters.

Because a roof requires many rafters to frame it speeds things along if you use the first rafter as a pattern or template for the other rafters. 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. Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter. Use it to make the proper measurements marks and cuts on each rafter.

A seat cut is a horizontally level cut so the rafter can sit flat onto the wall plate. Mark the location where you ll cut each of the common rafters. Using a carpenter s framing square mark the angled plumb line with a pencil at the end of a wood plank to find the place where you ll make the ridge cut the cut at the top of the rafter. The drawings and the size of the rafters are generated in real time.

This video will show you how to figure length and cut a common rafter for a gable roof using a framing square. Then use your pencil to make a mark at the framing square s 1 ft 0 30 m notch. 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.