Installing Metal Roof Over Sheathing

I d not install plastic on the sheathing because it s a vapor barrier.

Installing metal roof over sheathing.

And for any exposed fasteners try to avoid over tightening them. Most metal roof companies recommend installing felt paper on roof sheathing before you install the metal roofing. How to apply metal roofing over plywood step 1. Remove all unused vents pipes and protrusions.

Install the roofing screws vertically along each rib in the panel. 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 video i cover measuring the roof figuring the metal th. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.

Moreover try to ensure that the screws are all aligned evenly. Sweep the plywood clean of all dirt and debris with a push broom. The asphalt in the felt paper is waterproof and does a great job of protecting the untreated wood roof sheathing. Repair any rotted sections of plywood before installing the metal panels.

Space the screws about 12 in 30 cm apart. The asphalt in the felt paper is waterproof and does a great job of protecting the. Place the first screw. You will use metal roofing screws to secure the metal panels to the sheathing.

Most metal roof companies recommend installing felt paper on roof sheathing before you install the metal roofing. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Try to space the screws about 12 inches apart down the entire piece of metal. Use your neoprene washer head screws to secure the metal to the sheathing.