Gable Roof Rafter Calculator

To calculate a gable roof select gable from the roof type dropdown list or click on the corresponding button on the toolbar to calculate a gable roof.

Gable roof rafter calculator.

Online rafter length calculator calculate the length of common rafters with this free and easy online tool by entering a dimension for the roof width selecting a pitch for the roof and the thickness of the ridge. 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 estimates are based on your house foot print length and width and roof slope. The image clearly shows all the options you want.

Print full scale rafter cut templates and birdsmouth templates fold template over rafter to mark or cut through. The calculator provides online calculate the length of rafters a gable roof. Use the diagrams on this page as a reference when inputting rise and run and while interpreting the calculated results. See rafter run to outer wall calculator below.

Half building width minus 1 2 ridge thickness. In the select dimensions you need to make the roof by selecting appropriate units of measurement. Roof rafter calculator will estimate the length board size quantity cost per board and total cost of lumber. If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length.

Allow for ridge thickness when determining rafter run to outer wall. The roof pitch calculator calculates slope pitch angle and rafter lengths based on input of rise m and run r. The calculation of the shed roof rafters run another calculator. Includes result for hip valley factor slope factor and the roof slope in degrees.

Use of manufactured roof trusses can dramatically cut labor costs when framing a gable roof compared to building rafters. Rafter length calculator calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement. Trusses can be constructed with smaller sized lumber than rafters and often their cost is not significantly higher than normal rafters. The results are automatically fired.

The preview window displays a dimensioned side view of the gable roof. To get all data from gable roof calculator you need to measure and enter in the appropriate fields following sizes.