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I would like to install Fabral strip metal roofing to my rural cabin. I would like to install over my existing shingles. My home is a 1920 farmhouse, where if you are upstairs you can see all the original 2X6 beems (no attic or insulation). If I choose 1X3 purlines and a 3/4 foam insulation (R4) do I still have to put down an underlayment? Do I need verticle and horizontal purlines? (i'm confused with ventilation - some say keep well ventilated, yet with insulation wouldn't it not allow air flow?) Will the weight be an issue? I have 8:12 pitch and absolutely no soft spots or leaks now, the shingles are curling and I need a new roof.
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I believe that fabral requires solid decking beneath the type of panel you're looking at installing. It could possibly be installed over your old shingles with a recovery board or rigid installation board and, yes, underlayment.
You need to contact fabral direct and let them know what panel you're installing and ask for their advice.
Bill Croucher is Fabral's Director of Engineering. His email is [email protected]
9/3/2004
Or copy this URL: https://www.metalroofing.com/spirit/comment/3916/find/9/4/2004
Or copy this URL: https://www.metalroofing.com/spirit/comment/3917/find/