Roof Rafter Overhang

Subtract the width of your ridge beam.

Roof rafter overhang.

Measure the width of your building. If the roof overhang is not big enough then the only way to protect these windows doors and entryways is by recessing them into the thick exterior wall or by installing special casing and flashing for each door or entryway. An eave overhang is located on the longer sides of the shed. A rake overhang is created by extending the roof beyond the gables of your shed.

The ridge beam is the vertical piece of plywood which will form the peak of. Before you start cutting you first need to determine how long your roof rafters. This calculator is to be used as an estimating tool only. An eave is created by extending the slope of your roof beyond the walls of your shed.

Measure form the top of this line down the board to determine the line length or length of the rafter less the ridge. In general roof overhangs offer an effective solution for how to protect windows doors and entryways. Calculating rafter length 1. Overhang the overhang should be measured from the outer edge of the exterior wall to the furthest point of the rafter.

Rafter length using pitch v r 2 sqrt 1 p 2 where v overhang r roof span p pitch use our online rafter length calculator to quickly compute the length of the shed roof rafter by entering the measurements of overhead length of roof span pitch or angle. Click the button to calculate the stock size needed for this job. The length of the overhang depends primarily on the climate. Overhangs shade windows from the summer sun they help to keep water from dribbling off the roof and down the siding and they re a good place to hang gutters.

The installation of simple overhangs on a house involves nailing rafter extensions onto existing rafters. Gable trusses are only dropped over the area of the building not the overhang. Here the overhang is 320 13 inches. Add the length of the overhang beyond this mark and.

There are two types of roof overhangs two consider. Divide the adjusted width. Position the square at the end of the rafter board with the tongue on your left and facing away from you. So the corner is supported by one 2 x4 located usually 2 to 4 ft in from the exterior wall and the rough fascias making for a weak spot you feel when you walk the roof.

With a 3ft overhang that corner is going to be pretty soft. Input the rafter span on the flat eave overhang and pitch of the roof. Overhangs are common in most house designs providing protection against both wind and rain. You may want one or the other or both.

Rafter stock size calculator. Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction.