How Much Overhang On 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 on roof shingles.

This will protect a roof from most types of damage. 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. Each has their own reasoning for a slightly different amount of overhang. The length of the overhang itself commonly ranges from 2 to 5 inches.

Two feet is the general maximum length for a typical roof overhang. Roof drip edges are generally sold in 10 5 foot lengths but they are occasionally sold in 8 foot lengths or smaller. In my opinion the felt underlayment should also extend beyond the drip edge by 1 4 to 1 2 inch. Anywhere from a 1 2 to a 1 overhang is acceptable as you can tell from the varying comments amongst the previous posters.

A architect and roofing consultant harrison mccampbell responds. This profile of drip edge is shaped like a t with a lower flange at the bottom. In my opinion the shingles should never be exactly even with the edge of any drip edge flashing. Knowledgeable roofers will install shingles at just the right overhang for your roof type.

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.