How Far Should Roof Shingles Overhang

The drip edge flashing lip is 1 4 wide.

How far should roof shingles overhang.

How far beyond the drip edge should an asphalt shingle extend. The end with the flange or flare should point down and away from the roof. There is a lot to know a lot to do and a whole lot to be carried. 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.

Most shingle manufacturers along with the asphalt roofing manufacturers association s residential asphalt roofing manual call for a 1 4 inch to 3 4 inch overhang at both rakes and eaves. Nail high up on the drip edge so that the shingles will cover the nails. The 3 4 overhang of the shingle creates a full 1 overhang from the fascia to the edge of the shingle. Is the amount of overhang the same at the rake as at the eave.

Too much overhang and the shingles could blow off in high winds. Ed the roofer if what you say about fixing the problem cutting the edge is the proper way to do it than i m not terribly upset. Ideally you d nail about every 12 inches and in no circumstances should you have 16 inches or more between nails. Knowledgeable roofers will install shingles at just the right overhang for your roof type.

Shingle manufacturers say to use a 1 4 to 3 8 inch shingle overhang over the eave where your roof ends. Use roofing nails to secure the drip edge. The edge of the shingles should hang over the edge of the 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 and in most cases it should be. If you re going to take the leap and try it yourself do it safely and smartly.

A architect and roofing consultant harrison mccampbell responds. Too little can allow water to seep into rake or fascia boards. We ve seen other references that suggest extending the shingles a bit more than the manufacturers suggest to compensate for wavy eaves but they do not indicate extending more than 1 inch over the eave.