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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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