You will use metal roofing screws to secure the metal panels to the sheathing.
How to put a metal roof on my house.
Use your neoprene washer head screws to secure the metal to the sheathing.
Space the screws about 12 in 30 cm apart down the entire piece of metal.
Moreover try to ensure that the screws are all aligned evenly.
Most codes now allow no more than two layers of roofing before requiring a complete tear off.
Be sure the larger edge is laid so that the small edge of the next panel will overlap it.
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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.
5install metal panels or shingles.
Install the roofing screws vertically along each rib in the panel.
Take care the first piece is aligned precisely perpendicular square to the edge.
And for any exposed fasteners try to avoid over tightening them.
How to install a metal roof on a house covering your existing asphalt shingles with metal roofing might be worth the expense.
Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof line.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.
Can you put steel roofing over asphalt.
Here are some pros and cons.