Re-Roofing an old barn - Shingles to Steel | Ask The Experts Forum

Guest User 8/19/2013	Hello I am looking for some advice, I am in the process of re-roofing my barn (60 -70 year old barn). It has/had 3 in 1 shingles with felt paper and tounge & grove boards. I am thinking about leaving the tounge and grove boards and running perlins over the top of them to take out the "small waves" that have formed within the roof over the last 30 years. Would I need felt paper under the perlins? Thanks Shane	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/18705/find/
Todd Miller Isaiah Industries, Inc. 8/21/2013	Shane, I would suggest some sort of underlayment such as 30 pound felt paper ... or a synthetic underlayment.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/18706/find/
Eric Novotny An informed customer is the Best Customer! 8/21/2013	Yes. You will need some sort of underlayment behind the purlins. Personally, I prefer the synthetics that Todd mentioned.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/18707/find/

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