How Much Should A Shingle Hang Over The Roof Edge

The overhang of roof shingles is the amount of the shingle that extends past the lower edge of the roof creating a lip.

How much should a shingle hang over the roof edge.

Knowledgeable roofers will install shingles at just the right overhang for your roof type. When you place the next drip edge piece it should overlap the first by an inch. I was worried that because the edge shingle is the bottom layer fixing this would require redoing it. We ve seen other references that suggest extending the shingles a bit more than the manufacturers suggest to compensate for wavy eaves but they do not indicate extending more than 1 inch over the eave.

Why is overhang important. Shingle manufacturers say to use a 1 4 to 3 8 inch shingle overhang over the eave where your roof ends. Nail high up on the drip edge so that the shingles will cover the nails. Getting your overhang installed correctly is essential but what does that mean.

The 3 4 overhang of the shingle creates a full 1 overhang from the fascia to the edge of the shingle. This article will go over why overhang is so important and how much overhang shingles should have to dry properly. Use roofing nails to secure the drip edge. Ideally you d nail about every 12 inches and in no circumstances should you have 16 inches or more between nails.

In my opinion the felt underlayment should also extend beyond the drip edge by 1 4 to 1 2 inch. Too much overhang and the shingles could blow off in high winds. 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. Too little can allow water to seep into rake or fascia boards.