Installing Metal Roofing On Plywood

Moreover try to ensure that the screws are all aligned evenly.

Installing metal roofing on plywood.

Space the screws about 12 in 30 cm apart. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. Try to space the screws about 12 inches apart down the entire piece of metal. Repair any rotted sections of plywood before installing the metal panels.

But it seems the condensation will affect the 2x4 strapping. 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. 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.

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. Remove all unused vents pipes and protrusions. You will use metal roofing screws to secure the metal panels to the sheathing. Inspect the plywood for damaged areas.

How to apply metal roofing over plywood step 1. In this installation the vapor barrier is installed on the side of the insulation nearest the interior of the building. And for any exposed fasteners try to avoid over tightening them. For exposed fasteners avoid over tightening the fastener.

Install the roofing screws vertically along each rib in the panel. Applying the underlayment and the slip sheet. Place the first screw. 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.

Sweep the plywood clean of all dirt and debris with a push broom. Most metal roofs will also require underlayment as well as a slip sheet. How to install metal roofing over plywood inspect your plywood. 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.