How To Install Metal Roofing Over Plywood

To watch the entire series from the beginning click here. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. 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.

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How to apply metal roofing over plywood step 1.

How to install metal roofing over plywood.

Repair any rotted sections of plywood before installing the metal panels. Try to space the screws about 12 inches apart down the entire piece of metal. After the original roofing is removed what you will want to do first is look for bad pieces of. For exposed fasteners avoid over tightening the fastener.

Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. 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. In this video i m installing some metal roofing over an existing ash fault shingled roof. Sweep the plywood clean of all dirt and debris with a push broom.

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

Most metal roofs will also require underlayment as well as a slip sheet. Applying the underlayment and the slip sheet. But it seems the condensation will affect the 2x4 strapping. This is not a complete install only basic install on a bungalow i.

Remove all unused vents pipes and protrusions. How to install metal roofing over plywood inspect your plywood. You will use metal roofing screws to secure the metal panels to the sheathing. Use your neoprene washer head screws to secure the metal to the sheathing.

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. Space the screws about 12 in 30 cm apart. Inspect the plywood for damaged areas. Place the first screw.

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

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