Metal Roof Overhang Length

Metal roofs also require particular attention especially the length of flat metal roofs.

Metal roof overhang length.

Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports. Place corner pieces where panels will meet bends at the edge of the roofing. Once the first sheet is in place you need to install the remainder of the lowest row of corrugated metal roofing. America and canada the most important windows and doors to keep in mind for any roof strategy are the south windows.

Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. 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. 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. If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch.

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. This will protect a roof from most types of damage. Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging. We recommend about 2.

The tradeoff between solar heat gain and shading for homes built in the northern hemisphere i e. The sheets should overlap by at least four inches add a bead of caulk where they overlap and at the other end of the building ensure there s an overhang of two inches. This can make extensive roof overhangs more trouble than they are worth in all but the harshest climates. Though most overhang regardless because of discrepancies of the facia being straight so they run metal past to let it appear straight.

Two feet is the general maximum length for a typical roof overhang.