Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.
How far should metal roof overhang gutters.
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.
Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.
You want the screws to be quite long with deep threads as they will be bearing the weight of the gutter.
The steel siding is 3 4 thick which leaves 1 1 2 to 1 3 4 of overhang past the siding after it is installed.
Too much overhang and the shingles could blow off in high winds.
A typical metal roof overhang may be 2 to 4 inches or even less.
Greater overhang becomes a point of leverage for gusts of wind to rip off your roofing.
Add a gutter cover for your gutters.
About 1 inch just enough to assure the water goes into the gutter and not behind it.
The net resultant of each is the same and perfect for gutters if they are installed.
A rule of thumb is to have about two feet of spacing between gutter brackets.
Here phil explains how much overhang a roof should have at the gutter.
Based on the length of your metal roofing decide how many gutter brackets you need and choose screws that are the correct size for the holes in the gutter brackets.
Too little can allow water to seep into rake or fascia boards.
Mike the pole barn guru.
Ice dams can also occur on metal roofs and can cause damage.
Lengths of drip vary but typically it s sold in ten foot lengths 120.