How Much Overhang For Roof Shingles

Do this on both sides of the roof.

How much overhang for roof shingles.

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 length of the overhang itself commonly ranges from 2 to 5 inches. Too much overhang and the shingles could blow off in high winds. Too little can allow water to seep into rake or fascia boards.

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. Position the side of hook knife against the drip edge beneath the shingle with the blade facing upward against the. The 3 4 overhang of the shingle creates a full 1 overhang from the fascia to the edge of the shingle. In my opinion the felt underlayment should also extend beyond the drip edge by 1 4 to 1 2 inch.

After each shingle line has been laid one shingle will overhang the rake edge. Knowledgeable roofers will install shingles at just the right overhang for your roof type. I was worried that because the edge shingle is the bottom layer fixing this would require redoing it. 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. Roof drip edges are generally sold in 10 5 foot lengths but they are occasionally sold in 8 foot lengths or smaller. 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. If you do not have a drip edge flashing installed shingles should overhang an inch to an inch and a half.

A architect and roofing consultant harrison mccampbell responds. 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.