Should Metal Roof Overhang Drip Edge

A drip edge is a metal usually aluminum strip which extends beyond other parts of a roof and directs rainwater off the roof away from the fascia and into the gutter.

Should metal roof overhang drip edge.

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. While plastic vinyl and fiberglass drip edges may also be available in your area these materials are best suited for use in nonroofing applications such as above doors and windows. Slightly out of perfect flat probably isn t going to make a noticeable difference. Drip edge is a metal flashing that tends to overhang the sides of a roof.

Too much overhang and the shingles could blow off in high winds. Most homeowners will trust their roofing contractor to do what s necessary to replace the old roof but it doesn t hurt to ask if your roof bid includes drip edge. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials. A typical metal roof overhang may be 2 to 4 inches or even less.

There is a small size metal rim facing outwards and away from the roof fascia. Although it does not look like much this component is made to have great structural integrity. When used as a drip edge it should be a minimum of 0 69 mm or 20 ounces. It has the main function of controlling water flow on the roof which has many implications.

Too little can allow water to seep into rake or fascia boards. If the overlap is too short fix it by placing drip edge under the first row of roof shingles and be sure that the exterior edge is reaching over the gutter. If the gutter is lower than the bottom edge of the drip edge install flashing behind the drip edge and over the back edge of the gutter to remove the gap. Of course a drip edge should be flat on the roof deck.

On 2020 02 20 by chuck. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.