This is by far the most common way to install a metal roof.
Installing a metal roof on a double wide.
As long as the plywood under the shingle roof is in good condition this way can provide many benefits.
Space the screws about 12 in 30 cm apart.
3 install 1x4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1x4 purlins over the shingle roof.
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.
For exposed fasteners avoid over tightening the fastener.
Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.
Be sure the larger edge is laid so that the small edge of the next panel will overlap it.
Lay strips of 1 by 4 inch furring end to end and 2 feet apart across the length of the roof.
Place the first screw.
Use your neoprene washer head screws to secure the metal to the sheathing.
Install the roofing screws vertically along each rib in the panel.
This makes the total of a 2 160 square foot roof cost between 8 640 and 10 800.
Metal roofs are typically put over an old roof which can add insulation value.
How to install metal roof on a mobile home.