Install Metal Roofing Over Plywood

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.

Install metal roofing over plywood.

In this installation the vapor barrier is installed on the side of the insulation nearest the interior of the building. If a proper roof inspection isn t done the 1x4 s could be installed over rotten plywood which means the screws could pull out. After the original roofing is removed what you will want to do first is look for bad pieces of. 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. Inspect the plywood for damaged areas. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. And for any exposed fasteners try to avoid over tightening them.

Most metal roofs will also require underlayment as well as a slip sheet. Try to space the screws about 12 inches apart down the entire piece of metal. 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. Sweep the plywood clean of all dirt and debris with a push broom.

Space the screws about 12 in 30 cm apart. Install the roofing screws vertically along each rib in the panel. How to apply metal roofing over plywood step 1. Remove all unused vents pipes and protrusions.

Metal roof installation 2 of 6 featuring edco products. But it seems the condensation will affect the 2x4 strapping. For exposed fasteners avoid over tightening the fastener. How to install metal roofing over plywood inspect your plywood.

You will use metal roofing screws to secure the metal panels to the sheathing. Moreover try to ensure that the screws are all aligned evenly. 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. Applying the underlayment and the slip sheet.

Place the first screw.