Rafter Length Calculator Shed Roof

Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal.

Rafter length calculator shed roof.

We ll be building a 4 12. 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. Shed roof a shed roof slopes in one direction only. See rafter run to outer wall calculator below.

If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length. In other words if there is a 1 1 2 ridge board nailed into the wall and the width of the lean to is 96 then the run will be 94 1 2 96 1 1 2 94 1 2. More they usually claim that 4 12 is the lowest you can go without any special underlayment. Given here are the formulae to calculate the length of a shed roof rafter to make your roofings stronger and look beautiful.

Print full scale rafter cut templates and birdsmouth templates fold template over rafter to mark or cut through. Calculate the length of your rafters. Includes result for hip valley factor slope factor and the roof slope in degrees. Input the rafter span on the flat eave overhang and pitch of the roof.

Allow for ridge thickness when determining rafter run to outer wall. The rise of the rafter. Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. Use this calculator to find your rafter length.

Enter the value for the roof width outside to outside in feet inches and fraction inches and fraction or use the inches box to enter a value in decimals if that is your preference. The run of the rafter. Angle the angle of a roof is the same as the roof s slope except instead of being. Enter this measurement into the calculator and select a roof pitch and the length of the rafter will automatically returned along with the rise.

The length of the rafter. While making roofing for your house with the roof rafters it is important to know the rafter length to make the roof seat perfectly on the rafter. Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement. Half building width minus 1 2 ridge thickness.

This calculator is to be used as an estimating tool only. Click the button to calculate the stock size needed for this job. Many conventional roofing products such as shingles mandate a slope no lower than 2 12. Easy rafters is designed to calculate shed roofs that are framed to a ledger board nailed against a vertical wall not freestanding shed roofs supported by walls at both ends.