I have not heard of a foam batten but have seen a rolled (plastic type) furring strip. This may be to what the contractor is referring. I agree with Todd, either way, use the underlayment.
Lynn Noesser
2016-04-20 18:08:52.000000
I personally have not heard of anything other than wood battens. By all means I would make sure that the manufacturer of the roofing approves this procedure. And, yes, I would put down underlayment.
Todd Miller
2016-04-17 21:20:50.000000
I am getting ready to have installed a metal roof. My contractor wants to put foam purlins down over my existing shingle roof, then the metal over that. I am calling them purlins, but not sure if that is correct in this instance. Foam furring strips?
Will that work? Is it correct, and do I need overlayment over the existing shingles?