Roofing Rafter Finder

Print full scale rafter cut templates and birdsmouth templates fold template over rafter to mark or cut through.

Roofing rafter finder.

Half building width minus 1 2 ridge thickness. The run of the rafter. Divide the first part of the ratio by 12 to work out the pitch. Check your results with the omni roof pitch 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. Use the diagrams on this page as a reference when inputting rise and run and while interpreting the calculated results. Measure from the center of the first rafter to the center of the second rafter. The reason is that stud finders are designed to scan through sheet materials such as drywall or plywood that have a fairly smooth surface and consistent thickness and density.

The length of the rafter. Rafter is the beam supporting the building. Once you measure the distance from the wall to the center of the first rafter. Allow for ridge thickness when determining rafter run to outer wall.

Transfer the measurements to the roof. See rafter run to outer wall calculator below. Find the inverse tangent of the pitch to find the angle in degrees. To convert between american roofing ratios and pitch degrees follow these steps.

Includes result for hip valley factor slope factor and the roof slope in degrees. The roof pitch calculator calculates slope pitch angle and rafter lengths based on input of rise m and run r. Rafter length calculator a useful shed roof rafter calculator to calculate the rafter length for the given dimensions of the roof of the building or a structure. Rafter length calculator calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement.

Height of the scaffold. A typical asphalt shingle roof has a layer of wood based sheet material usually plywood or chipboard and normally with a layer of tar paper. Find its length with our online rafter length calculator. The results are automatically fired.

Rafters are evenly spaced so knowing how far apart they are gives you the ability to find the rafters while on the roof.