Steel Roof over Purlins? | Ask The Experts Forum

David Morex 9/26/2010	We just purchased an old farmhouse in SE Wisconsin and we're thinking of re-roofing with steel. We will need to tear off two layers of asphalt and the original wood shake. Can we install a vertical panel steel roof over the existing purlins, or will we need to cover that with OSB first? Thank you in advance for any thoughts or suggestions!	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/15239/find/
Guest User 9/26/2010	You would be better of building a new building ,	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/15240/find/
mick capper metal roofing software 9/27/2010	You will need to check measure your purlin spacings as metal roof sheeting has maximum spanning properties depending on the material thickness and you can usually find this information on the manufactures web site.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/15241/find/
Nate Libbey 9/27/2010	Good advice from mick. Usually if they are spaced close enough for wood shakes they are close enough for metal roofing panels. That being said, not all metal roofing is designed to go over open framing.	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/15242/find/

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