Too little can allow water to seep into rake or fascia boards.
Extend roof tile overhang.
Too much overhang and the shingles could blow off in high winds.
Choose a roof pitch 3 12 and roof structure 2x6 this places the new roof on top of the existing roof.
Two feet is the general maximum length for a typical roof overhang.
Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports.
The cost of extending my 30 foot long roof overhang 14 inches was 340 or 11 50 per running foot for materials.
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.
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.
This cost did not include any labor or waste disposal fees.
This can make extensive roof overhangs more trouble than they are worth in all but.
Having overhang prevents the water from making contact with the structural areas of the roof.
Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.
The overhang of roof shingles is the amount of the shingle that extends past the lower edge of the roof creating a lip.
This will protect a roof from most types of damage.
Kick it or keep it.
Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.
The next question is what to do with the existing eave under the new roof.
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.
Here phil explains how much overhang a roof should have at the gutter.