Re-Roofing an old barn - Shingles to Steel

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
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.
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.

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