How Far Should Metal Roof Hangover Drip Edge

A typical metal roof overhang may be 2 to 4 inches or even less.

How far should metal roof hangover drip edge.

However if they used an l type metal flashing or no flashing at all then the starter course and the shingles must be extended beyond the perimeter eve and rake edges 1 4 to 3 4 inch. In my opinion the felt underlayment should also extend beyond the drip edge by 1 4 to 1 2 inch. Lengths of drip vary but typically it s sold in ten foot lengths 120. If you are not using drip edge make the over hang 3 4 then also on page 2 1st course paragraph reads make tabs lie flush with the edges of the starter course i find that by installing 1 instead of 3 4 it compensates for wavy fascia as you said but also if the roofers make a 1 4 mistake it s better to be a wee bit too much than a wee bit too little.

Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. 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. A drip edge has to be resistant to possible corrosion and should be 36 gauge or larger. The length of the overhang itself commonly ranges from 2 to 5 inches.

Roof drip edges are generally sold in 10 5 foot lengths but they are occasionally sold in 8 foot lengths or smaller. 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. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials. Don t overdo the overhang shingles that extend more than 3 4 inch can eventually bend and fracture leaving the roof sheathing and fascia vulnerable to water damage.

Too much overhang and the shingles could blow off in high winds.