Hi Carl,
Have you looked at the DPW easy feet.
Very large foot that shouldn't compress the foam.
You may want to use more feet to distribute the load as well.
They may be able to give you some help on the calcs.
jay
peltz power
On Sep 8, 2009, at 1:04 PM, Carl Adams wrote:
Hello Wrenches,
I have a job on a 3.5/12 pitched rubber roof. We have 1.5” foam under
the EPDM, then the steel decking, then the purlins. Purlin spacing
supports adequate attachment points for a conventional rail mounted
system. I have 2 questions
1) A typical L-foot attachment to the roof would likely compress the
underlying foam and result in divets at each foot. What do you
recommend to disperse the load at the point of attachment
2) What type of screw do you recommend for attaching the L-Feet to
the purlins
With Regards
Carl Adams
NABCEP Certified Solar PV Installer
NABCEP Certified Solar Thermal Installer
SunRock Solar
Cincinnati, Ohio
513.766.6025
www.sunrocksolar.com
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