Install Metal Roofing Over Plywood

Place the first screw.

Install metal roofing over plywood.

And for any exposed fasteners try to avoid over tightening them. But it seems the condensation will affect the 2x4 strapping. Applying the underlayment and the slip sheet. 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. Metal roof installation 2 of 6 featuring edco products. Remove all unused vents pipes and protrusions. Use your neoprene washer head screws to secure the metal to the sheathing.

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. How to install metal roofing over plywood inspect your plywood. Moreover try to ensure that the screws are all aligned evenly. Inspect the plywood for damaged areas.

Sweep the plywood clean of all dirt and debris with a push broom. In this installation the vapor barrier is installed on the side of the insulation nearest the interior of the building. Install the roofing screws vertically along each rib in the panel. Try to space the screws about 12 inches apart down the entire piece of metal.

Be sure the larger edge is laid so that the small edge of the next panel will overlap it. 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. Space the screws about 12 in 30 cm apart. If a proper roof inspection isn t done the 1x4 s could be installed over rotten plywood which means the screws could pull out.

How to apply metal roofing over plywood step 1. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. After the original roofing is removed what you will want to do first is look for bad pieces of. Most metal roofs will also require underlayment as well as a slip sheet.

Repair any rotted sections of plywood before installing the metal panels.