Metal Roof Directly On Plywood

In this installation the vapor barrier is installed on the side of the insulation nearest the interior of the building.

Metal roof directly on plywood.

Can i install the metal roof over the ice shield or do i need the 1 x 4 battens every 2 feet as well it s a low slope roof thus the ice shield for extra protection. To secure it measure it roll it out over the plywood cut it to the dimensions of the roof with a roofing or utility knife and finally hammer it securely to the plywood with 1 2 inch roofing nails. Yes metal roofs are placed directly to the plywood over icynene insulated roof sheathing thats how i always had it done and warranteed. Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

On top of this underlayment goes a slip which protects the material from tearing as the metal roof expands and contracts with changing weather. Also there are numerous better underlayment products as mentioned above including grace products and a host of others all better than felt. Hi todd i have a pole barn design structure that had been turned into a livable dwelling with cathedral ceilings using rigid foam between the metal roof and the ceiling sheetrock i am redoing this and putting a decking down with tyvek protec 200 and then reattaching the metal roof and adding circular pest resistant soffit vents at the end rafters of the roof between purlins for ventilation. Inspect the plywood for damaged areas.

But it seems the condensation will affect the 2x4 strapping. How to apply metal roofing over plywood step 1. 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. Remove all unused vents pipes and protrusions.

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. Sweep the plywood clean of all dirt and debris with a push broom. Install the roofing screws vertically along each rib in the panel. Repair any rotted sections of plywood before installing the metal panels.