Install Metal Roofing Over Plywood

Try to space the screws about 12 inches apart down the entire piece of metal.

Install metal roofing over plywood.

Applying the underlayment and the slip sheet. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof that can t be done the other two ways. And for any exposed fasteners try to avoid over tightening them. Inspect the plywood for damaged areas.

Repair any rotted sections of plywood before installing the metal panels. Remove all unused vents pipes and protrusions. Sweep the plywood clean of all dirt and debris with a push broom. Space the screws about 12 in 30 cm apart.

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. How to install metal roofing over plywood inspect your plywood. 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. But it seems the condensation will affect the 2x4 strapping. You will use metal roofing screws to secure the metal panels to the sheathing. Use your neoprene washer head screws to secure the metal to the sheathing.

Most metal roofs will also require underlayment as well as a slip sheet. 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. 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. After the original roofing is removed what you will want to do first is look for bad pieces of.

Install the roofing screws vertically along each rib in the panel. 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. Moreover try to ensure that the screws are all aligned evenly.

Metal roof installation 2 of 6 featuring edco products.