[RE-wrenches] Pitched EPDM Roof Attachment

[Carl Adams]

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