Roof Rafter Material Calculator

In the attic place the level against a rafter with the 12 inch mark on the bottom of the rafter.

Roof rafter material calculator.

Roof rafter calculator will estimate the length board size quantity cost per board and total cost of lumber. Measure from the end of the level up to the bottom edge of the rafter. Roofing material calculator the calculated area is only an estimation. Our calculator will round up to the nearest foot.

Prices are based on quotes from multiple lumber yards and building material suppliers. To calculate the materials you ll need enter your measurements in the calculator below. This calculator is to be used as an estimating tool only. This online truss calculator will determine the all in cost of your truss based on key inputs related to the pitch width and overhang of your roof.

If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length. The estimates are based on your house foot print length and width and roof slope. Click the button to calculate the stock size needed for this job. Half building width minus 1 2 ridge thickness.

Includes result for hip valley factor slope factor and the roof slope in degrees. Rafter length calculator calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement. Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal. 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.

Allow for ridge thickness when determining rafter run to outer wall. Roof pitch calculator roof slope calculator the roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need. See rafter run to outer wall calculator below. 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.

Input the rafter span on the flat eave overhang and pitch of the roof. In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area. Print full scale rafter cut templates and birdsmouth templates fold template over rafter to mark or cut through.