In my opinion the shingles should never be exactly even with the edge of any drip edge flashing.
How far should shingles overhang gutters.
Nail high up on the drip edge so that the shingles will cover the nails.
Ideally you d nail about every 12 inches and in no circumstances should you have 16 inches or more between nails.
The rake edge is the extreme edge of the roof on either side.
Greater overhang becomes a point of leverage for gusts of wind to rip off your roofing.
The shingles should overhang into the gutter at least 1 in most cases.
Too much overhang and the shingles could blow off in high winds.
Here phil explains how much overhang a roof should have at the gutter.
Ideally you d nail about every 12 inches and in no circumstances should you have 16 inches or more between nails.
When you place the next drip edge piece it should overlap the first by an inch.
Keeping a solid roofing layer of shingles is an important way to avoid water damage and.
Each has their own reasoning for a slightly different amount of overhang.
From dirt to ridge vent.
Shingles protect sloping rooftops from the effects of rain snow and hail while providing an attractive crown for the house.
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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.
When you place the next drip edge piece it should overlap the first by an inch.
Shingle manufacturers say to use a 1 4 to 3 8 inch shingle overhang over the eave where your roof ends.
How to lay shingles.
Here phil explains how much overhang a roof should have at the gutter.
Many installers deliberately bend down the overhang into the gutter to assure no wind blown rain goes between the overhang and the gutter effectively preventing water incursion behind the gutter.
The edge of a roof in professional vernacular is called the rake edge.
Install drip edges on the eaves first.
How to cut shingles off the edge of a roof in a straight line.
Anywhere from a 1 2 to a 1 overhang is acceptable as you can tell from the varying comments amongst the previous posters.
Too little can allow water to seep into rake or fascia boards.
Glasshousebltr custom builder.