How To Install Metal Roofing Over Plywood

After the original roofing is removed what you will want to do first is look for bad pieces of.

How to install metal roofing over plywood.

How to apply metal roofing over plywood step 1. Try to space the screws about 12 inches apart down the entire piece of metal. 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.

Space the screws about 12 in 30 cm apart. Moreover try to ensure that the screws are all aligned evenly. 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.

Applying the underlayment and the slip sheet. Sweep the plywood clean of all dirt and debris with a push broom. 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. Place the first screw.

How to install metal roofing over plywood inspect your plywood. 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 video i m installing some metal roofing over an existing ash fault shingled roof.

You will use metal roofing screws to secure the metal panels to the sheathing. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. But it seems the condensation will affect the 2x4 strapping. 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.

For exposed fasteners avoid over tightening the fastener. Repair any rotted sections of plywood before installing the metal panels. Inspect the plywood for damaged areas. Use your neoprene washer head screws to secure the metal to the sheathing.

This is not a complete install only basic install on a bungalow i.