How Much Overhang On Roof Shingles

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

How much overhang on roof shingles.

If you have installed a drip edge flashing you should have between half an inch and three quarters of an inch of shingle overhang. Anywhere from a 1 2 to a 1 overhang is acceptable as you can tell from the varying comments amongst the previous posters. 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 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. Two feet is the general maximum length for a typical roof overhang. A architect and roofing consultant harrison mccampbell responds. The length of the overhang itself commonly ranges from 2 to 5 inches.

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

Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports.