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.
Proper way to install metal roofing.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.
For exposed fasteners avoid over tightening the fastener.
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.
Be sure the larger edge is laid so that the small edge of the next panel will overlap it.
Install the roofing screws vertically along each rib in the panel.
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As long as the plywood under the shingle roof is in good condition this way can provide many benefits.
One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms.
Use your neoprene washer head screws to secure the metal to the sheathing.
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.
You will need to order enough metal material to cover the entire roof and this process.
Remove the old roof.
Space the screws about 12 in 30 cm apart.
Absolute steel recommends using metal self tapping screws with thin washers that have been properly compressed to ensure a secure seal.
Over tightening and under tightening fasteners pre drilling screw holes using the right tools and chalk lines.
Metal roofing resists rot is not susceptible to insect damage and is non combustible a boon in fire prone areas.
Place the first screw.
A corrugated metal roof is quieter than pvc when it rains.
You ll want to order metal panels that are an appropriate color and look to complement your.
This is by far the most common way to install a metal roof.
Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.