How Much Overhang For Roof Shingles

If you do not have a drip edge flashing installed shingles should overhang an inch to an inch and a half.

How much overhang for roof shingles. A architect and roofing consultant harrison mccampbell responds. If you have installed a drip edge flashing you should have between half an inch and three quarters of an inch of shingle overhang. How much overhang should roof shingles have. The 3 4 overhang of the shingle creates a full 1 overhang from the fascia to the edge of the shingle.

The length of the overhang itself commonly ranges from 2 to 5 inches. 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. 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. 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.

Too little can allow water to seep into rake or fascia boards. 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. Do this on both sides of the roof. Mark 12 inches up on the roof for the first course of shingles then mark every 5 inches all the way up the roof to set your reveal.

Knowledgeable roofers will install shingles at just the right overhang for your roof type. This profile of drip edge is shaped like a t with a lower flange at the bottom. Too much overhang and the shingles could blow off in high winds. In my opinion the felt underlayment should also extend beyond the drip edge by 1 4 to 1 2 inch.