How Far Should Metal Roof Overhang Gutters

Greater overhang becomes a point of leverage for gusts of wind to rip off your roofing.

How far should metal roof overhang gutters.

On page 365 the overhang is beyond a fascia board buildings with eave overhangs. Add a gutter cover for your gutters. This old house recommends that gutters should slope inch for every 10 feet toward a downspout this keeps water moving away from your roof. Ice dams can also occur on metal roofs and can cause damage.

Lengths of drip vary but typically it s sold in ten foot lengths 120. 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. You want the screws to be quite long with deep threads as they will be bearing the weight of the gutter. The edge of the shingles should hang over a roof between an inch and an inch and a half or between a half inch and three quarters of an inch if drip edge flashing is installed.

Mike the pole barn guru. About 1 inch just enough to assure the water goes into the gutter and not behind it. Too much overhang and the shingles could blow off in high winds. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.

Drip edge varies in dimensions but typically the flange that nails to the roof surface is about 2 5 wide and the vertical edge that directs roof runoff down and away is about 1 5 in depth. A typical metal roof overhang may be 2 to 4 inches or even less. Too little can allow water to seep into rake or fascia boards. A rule of thumb is to have about two feet of spacing between gutter brackets.

Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.