Metal Roof On Plywood Decking

The quality and type of underlayments used on the project in the long term will affect the overall performance of the roof.

Metal roof on plywood decking.

I m in the process of installing a metal roof over an outside deck. Inspect the plywood for damaged areas. Do you need plywood under metal roofing. My rafters are in place and now i m getting ready to purchase and install my flashing and sheathing.

Our new smooth series cellular deck offers a blemish free beam to pan rivet. In a barn shop or other outbuilding you can attach your metal roof directly to the purlins. 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. 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.

Repair any rotted sections of plywood before installing the metal panels. Considering when to. 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. Remove all unused vents pipes and protrusions.

For many applications a layer of plywood underneath your metal roofing is an unnecessary expense. Sweep the plywood clean of all dirt and debris with a push broom.