How Much Overhang For Metal Roof

On page 365 the overhang is beyond a fascia board buildings with eave overhangs.

How much overhang for metal roof. We recommend about 2. The net resultant of each is the same and perfect for gutters if they are installed. Two feet is the general maximum length for a typical roof overhang. This will protect a roof from most types of damage.

However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes. Multiply those numbers and then double the result for the square footage of your roof. Before you start to install corrugated metal roofing you need to figure out how much you need. Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

The steel siding is 3 4 thick which leaves 1 1 2 to 1 3 4 of overhang past the siding after it is installed. Corrugated metal roofing generally comes in sheets that are 3x6 feet in size 18 square feet. To create a cantilever properly you will need to know plenty about physics like torque and rotational equilibrium. Measure the length of the roof and the breadth of one side.

A typical metal roof overhang may be 2 to 4 inches or even less. Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof line. Though most overhang regardless because of discrepancies of the facia being straight so they run metal past to let it appear straight. How to cut metal roofing never use a circular saw or other device that will fling hot metal chips all around the area you cut.

Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. There is a thing called wicking that if on a low enough slope will run up the underside of roofing and possible go up enough to get behind facia so usually without drip edge at least 2 with drip edge even. Install the roofing screws vertically along each rib in the panel. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.

Here phil explains how much overhang a roof should have at the gutter. The metal roof length calculator calculates the distance from peak to trim so add the length you want the roof metal to extend beyond the eave trim. Cantilevered structures are popular for homes with balconies. You can add 3 to 5 inches to the top.

Overhangs can vary from a few inches to a few feet depending on preference. That said overhangs can extend as far as 2 without the need for external supports.