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.

Install metal roofing over plywood. Moreover try to ensure that the screws are all aligned evenly. Inspect the plywood for damaged areas. But it seems the condensation will affect the 2x4 strapping. 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.

Space the screws about 12 in 30 cm apart. Try to space the screws about 12 inches apart down the entire piece of metal. Place the first screw. 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.

Remove all unused vents pipes and protrusions. 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. How to apply metal roofing over plywood step 1. You will use metal roofing screws to secure the metal panels to the sheathing.

Metal roof installation 2 of 6 featuring edco products. If a proper roof inspection isn t done the 1x4 s could be installed over rotten plywood which means the screws could pull out. 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.

For exposed fasteners avoid over tightening the fastener. Sweep the plywood clean of all dirt and debris with a push broom. Install the roofing screws vertically along each rib in the panel. Applying the underlayment and the slip sheet.

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

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.