The cost of extending my 30 foot long roof overhang 14 inches was 340 or 11 50 per running foot for materials.
Extend roof tile overhang.
This cost did not include any labor or waste disposal fees.
Two feet is the general maximum length for a typical roof overhang.
Choose a roof pitch 3 12 and roof structure 2x6 this places the new roof on top of the existing roof.
Having overhang prevents the water from making contact with the structural areas of the roof.
Too little can allow water to seep into rake or fascia boards.
Extending a gable roof can be tricky since it involves working on the roof but you may be able to do it yourself if you only need to add 1 2 2 inches 1 3 5 1 cm.
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.
However for larger extensions you ll need to hire a professional to get up there and remove large portions of the roof before extending the overhang.
The more water you keep from the structural components of the roof or fascia the longer these parts will last.
Too much overhang and the shingles could blow off in high winds.
To tie the design together peter chose to cut the rafter tails off the extend the exterior wall up to the underside of the new roof.
A good estimate for a contractor to do this same roof overhang extension would range from 50 to 85 per running foot.
A typical metal roof overhang may be 2 to 4 inches or even less.
The next question is what to do with the existing eave under the new roof.
The overhang of roof shingles is the amount of the shingle that extends past the lower edge of the roof creating a lip.
Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.
Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.
Kick it or keep it.
Here phil explains how much overhang a roof should have at the gutter.