How Far Should Roofing Shingles Overhang

The rake edge is the extreme edge of the roof on either side.

How far should roofing shingles overhang.

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. Here phil explains how much overhang a roof should have at the gutter. The edge of a roof in professional vernacular is called the rake edge. Too much overhang and the shingles could blow off in high winds.

Too little can allow water to seep into rake or fascia boards. In my opinion the felt underlayment should also extend beyond the drip edge by 1 4 to 1 2 inch. Knowledgeable roofers will install shingles at just the right overhang for your roof type. A architect and roofing consultant harrison mccampbell responds.

Each has their own reasoning for a slightly different amount of overhang. You may find other styles and sizes of drip edges in the store including j channel drip edges but these are intended for windows doors and other applications. 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. 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.

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