You will need to order enough metal material to cover the entire roof and this process.
How to put metal roofing down.
Remove the old roof.
If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel.
You ll want to order metal panels that are an appropriate color and look to complement your.
Place the first screw.
Be sure the larger edge is laid so that the small edge of the next panel will overlap it.
Space the screws about 12 in 30 cm apart.
Measure the roof area.
Use your neoprene washer head screws to secure the metal to the sheathing.
Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.
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.