Use the slope factor to.
How to sheet a roof by yourself.
Measure the length width and rise of one section your roof.
The slope is given as rise over run meaning the distance up rise divided.
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Readying your roof 1.
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Roof sheathing or decking is one of those elements.
Begin applying the sheets from the bottom of the roof the eaves and work your way up to the ridge.
Most metal shingles will be attached to the roof using metal shingle.
It is important here that the sheathing at the eave line be exactly perpendicular to the rafters so that the sheets will meet at the centers of the rafters.
Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.
Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.
In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood.
Make it tall enough so that you can pull the sheets from the roof and install them in place.
The last course at the top may need to be rip cut if the roof is not in 4 foot increments.
A simple way to get a bunch of sheets to the roof is to build a simple rack out of framing lumber 2x4s are fine on the ground onto which you stack your plywood sheets.
Calculate the slope factor of your roof.