Installing Metal Roofing On Plywood

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.

Installing metal roofing on plywood.

Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. Sweep the plywood clean of all dirt and debris with a push broom. Repair any rotted sections of plywood before installing the metal panels. Space the screws about 12 in 30 cm apart.

Use your neoprene washer head screws to secure the metal to the sheathing. Inspect the plywood for damaged areas. 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 install metal roofing over plywood inspect your plywood.

For exposed fasteners avoid over tightening the fastener. Place the first screw. Try to space the screws about 12 inches apart down the entire piece of metal. But it seems the condensation will affect the 2x4 strapping.

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. And for any exposed fasteners try to avoid over tightening them. Applying the underlayment and the slip sheet.

Install the roofing screws vertically along each rib in the panel. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. In this installation the vapor barrier is installed on the side of the insulation nearest the interior of the building. Most metal roofs will also require underlayment as well as a slip sheet.

After the original roofing is removed what you will want to do first is look for bad pieces of. How to apply metal roofing over plywood step 1. If a proper roof inspection isn t done the 1x4 s could be installed over rotten plywood which means the screws could pull out. 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.