Take care the first piece is aligned precisely perpendicular square to the edge.
How do you put a metal roof on a house.
You can use 1 inch nails for the installation of eave flashing.
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Most codes now allow no more than two layers of roofing before requiring a complete tear off.
Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging.
Place corner pieces where panels will meet bends at the edge of the roofing.
Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm.
The eave flashing or edging is just the steel metal strips used to cover the entire perimeter of the roof.
Can you put steel roofing over asphalt.
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If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch.
Next you are ready to install the metal roof.
Space the screws about 12 in 30 cm apart down the entire piece of metal.
How to install a metal roof on a house covering your existing asphalt shingles with metal roofing might be worth the expense.