Purlins and Polyico
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September 13, 2011 at 2:41 p.m.
samn29palms
How do I install purlins with 1 1/2" polyico for standing seam? I see some guys dont use purlins they just go thru the foam board. This cant be secure is it?
October 1, 2011 at 9:26 p.m.
Mike H
As long as it's wood deck, I haven't had a problem.
Metal underlayment iso deck
Solid as a rock.
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