How Much Overhang On Roof Shingles

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

How much overhang on roof shingles.

A architect and roofing consultant harrison mccampbell responds. Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports. This will protect a roof from most types of damage. 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.

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. How much overhang should roof shingles have. Knowledgeable roofers will install shingles at just the right overhang for your roof type.

Two feet is the general maximum length for a typical roof overhang. In my opinion the shingles should never be exactly even with the edge of any drip edge flashing. If you do not have a drip edge flashing installed shingles should overhang an inch to an inch and a half. Roof drip edges are generally sold in 10 5 foot lengths but they are occasionally sold in 8 foot lengths or smaller.

This profile of drip edge is shaped like a t with a lower flange at the bottom.