How To Install Metal Roofing Over Plywood

Applying the underlayment and the slip sheet.

How to 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. Use your neoprene washer head screws to secure the metal to the sheathing. But it seems the condensation will affect the 2x4 strapping. How to apply metal roofing over plywood step 1.

And for any exposed fasteners try to avoid over tightening them. Install the roofing screws vertically along each rib in the panel. For exposed fasteners avoid over tightening the fastener. In this installation the vapor barrier is installed on the side of the insulation nearest the interior of the building.

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. You will use metal roofing screws to secure the metal panels to the sheathing. Sweep the plywood clean of all dirt and debris with a push broom. 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. This is not a complete install only basic install on a bungalow i. After the original roofing is removed what you will want to do first is look for bad pieces of. Place the first screw.

How to install metal roofing over plywood inspect your plywood. Moreover try to ensure that the screws are all aligned evenly. In this video i m installing some metal roofing over an existing ash fault shingled 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. To watch the entire series from the beginning click here. Most metal roofs will also require underlayment as well as a slip sheet. Repair any rotted sections of plywood before installing the metal panels.

Remove all unused vents pipes and protrusions.