How To Install Metal Roofing On Plywood

Add the metal panels.

How to install metal roofing on plywood.

Hammer down all raised nails. And for any exposed fasteners try to avoid over tightening them. This is by far the most common way to install a metal roof. On top of this underlayment goes a slip which protects the material from tearing as the metal roof expands and contracts with changing weather.

The edging or eave flashing consists of metal strips that are used to cover the perimeter of the roof. You will use metal roofing screws to secure the metal panels to the sheathing. In this installation the vapor barrier is installed on the side of the insulation nearest the interior of the building. But it seems the condensation will affect the 2x4 strapping.

As long as the plywood under the shingle roof is in good condition this way can provide many benefits. In reading online it seems wise to install a vapor barrier over the plywood to prevent condensation from getting adsorbed into the plywood from the steel roof. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Moreover try to ensure that the screws are all aligned evenly.

Install the roofing screws vertically along each rib in the panel. Always begin working at the point with the longest peak to eave distance. Inspect the plywood for damaged areas. I was planning on putting plywood over the rafters and cross the rafters with a 2 x4 every 16 to secure the metal roof to.

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. To secure it measure it roll it out over the plywood cut it to the dimensions of the roof with a roofing or utility knife and finally hammer it securely to the plywood with 1 2 inch roofing nails. Sweep the plywood clean of all dirt and. Metal roofing resists rot is not susceptible to insect damage and is non combustible a boon in fire prone areas.

Remove all unused vents pipes and protrusions. Repair any rotted sections of plywood before installing the metal panels. 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. Use your 1 1 4.

One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms. When using plywood nail it directly to the purlins and screw the metal roofing panels through the plywood into the purlins as instructed by the manufacturer. How to apply metal roofing over plywood.