Metal Roofing Directly On Felt

Synthetic underlayment is a newer innovation that is taking over the metal roofing industry as a better more advanced replacement for felt underlayment.

Metal roofing directly on felt.

The quality and type of underlayments used on the project in the long term will affect the overall performance of the roof. Selecting the right underlayments for a lifetime metal roof should be a primary concern for anyone thinking about specifying or choosing to install a metal roof on their home. Most synthetic underlayments are mechanically attached with roofing caps and staples while others have a glue backing. March 4 2016 at 7 54 am.

Thank you very much. Repair any rotted sections of plywood before installing the metal panels. Sweep the plywood clean of all dirt and debris with a push broom. When most people think of roofs they typically think of shingles or metal roofing.

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. In most cases what you are doing will be fine. The asphalt in the felt paper is waterproof and does a great job of protecting the untreated wood roof sheathing.

Most metal roof companies recommend installing felt paper on roof sheathing before you install the metal roofing. Metal roofing info roofing felt has always been the underlayment of choice for many roofing contractors and do it yourselfers for many years for the use under metal roofs. I d not install plastic on the sheathing because it s a vapor barrier. Conversely felt underlayment is appropriate in conjunction with ice dam protection at eaves and other critical transitions in cold climates.

Architectural metal roofs with felt underlayment are best suited for buildings with proper slope and low moisture loads in dry or arid climates. How to apply metal roofing over plywood step 1. It s low cost and familiarity with the product is why it has been around for so long. Will i be okay.

Remove all unused vents pipes and protrusions. The metal has air gaps for ventilating.