Insulation under existing metal roof: "I have a gambrel-roofed pole barn with a metal roof. ..." - Andrew Berezowsky (11/27/2016) | I Have An Existing Metal Roof and Have A Question | Ask The Experts Forum

I have a gambrel-roofed pole barn with a metal roof. The underside of the metal is exposed. The peak is vented. The metal is on battens. I would like to install insulation under the roof, but am unsure of the best way to go about this. Can anyone give me some advise? Thanks.. .	Andrew Berezowsky 11/27/2016	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/21661/find/
Can you possibly install the insulation so that a vented air gap remains between the insulation and the back side of the metal? That would be my advice.	Todd Miller Isaiah Industries, Inc. 11/27/2016	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/21662/find/
Thanks for the reply. I could use foam baffles between the metal and the insulation, but that would preclude using spray foam, wouldn't it?	Guest User 11/27/2016	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/21663/find/
How about a picture of the roof? Structure and accessibility will dictate if you have to use Spray Foam of if you can tackle it other ways.	Eric Novotny An informed customer is the Best Customer! 11/27/2016	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/21664/find/
If you can use closed cell spray foam, you can probably get by without the ventilation. Spraying foam direct to the back of metal roofing creates a real challenge if the roof ever has to be altered, repaired, or replaced.	Todd Miller Isaiah Industries, Inc. 11/27/2016	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/21665/find/

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