How To Install Metal Roofing On Plywood

Always begin working at the point with the longest peak to eave distance.

How to install metal roofing on plywood.

Take your first sheet of. Add the metal panels. 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.

And for any exposed fasteners try to avoid over tightening them. 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. Repair any rotted sections of plywood before installing the metal panels. One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms.

Moreover try to ensure that the screws are all aligned evenly. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. How to apply metal roofing over plywood. You will use metal roofing screws to secure the metal panels to the sheathing.

The edging or eave flashing consists of metal strips that are used to cover the perimeter of the roof. This is by far the most common way to install a metal roof. Inspect the plywood for damaged areas. Hammer down all raised nails.

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. In this installation the vapor barrier is installed on the side of the insulation nearest the interior of the building. Metal roofing resists rot is not susceptible to insect damage and is non combustible a boon in fire prone areas.

But it seems the condensation will affect the 2x4 strapping. Install the roofing screws vertically along each rib in the panel. Use your 1 1 4. A corrugated metal roof is quieter than pvc when it rains.

As long as the plywood under the shingle roof is in good condition this way can provide many benefits. Try to space the screws about 12 inches apart down the entire piece of metal. On top of this underlayment goes a slip which protects the material from tearing as the metal roof expands and contracts with changing weather.