The metal roof length calculator calculates the distance from peak to trim so add the length you want the roof metal to extend beyond the eave trim.
Overhang on a pole barn with shingle roof.
Cut the entire drip edge by your second mark so that it only hangs past the edge by an inch.
We recommend about 2.
A typical metal roof overhang may be 2 to 4 inches or even less.
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.
I would recommend you enclose overhang underside with some sort of soffit panel to keep flying critters from making homes in your new end overhang.
First place your drip edge on the rake edge.
The construction of a roof overhang is one important way that homeowners can protect the exterior of their home and preserve its value.
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 best roof shape for a high wind area would be a hip roof but it s more expensive to construct than a traditional gable roof a common roof for sheds.
Mark where the drip edge begins to overhang and one inch further out from that overhang.
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Place corner pieces where panels will meet bends at the edge of the roofing.
Too little can allow water to seep into rake or fascia boards.
Too much overhang and the shingles could blow off in high winds.
Then cut out the topmost portion of the drip edge by your first mark.
Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.
Install edging use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging.
In terms of roof covering standing seam metal roof would be the best option in terms of strength and durability but you could also go with architectural shingles light color roof.
Maximum you can overhang end truss will be two feet so you should be able to attach a 2 6 fly rafter to ends of your now overhanging roof purlins.
How to cut metal roofing never use a circular saw or other device that will fling hot metal chips all around the area you cut.