Hi Mark, Having learned of Eternabond on this list, we've since used the doublestick version on two, raised rib type metal roofs. Of course, it's way too early to tell how it will perform over time, but we were quite impressed during installation. It's ferociously sticky. You'll want to place your L-feet very carefully.
We went with the dollop of silicone (Lexel) followup, though Eternabond does make a single stick product that might be appropriate to place over top of the lags. The stuff does squeeze out well while tightening the lags. My sense was the teeth on the L-feet bottoms were very close to, if not touching the metal roofing surface, meaning no more compression over time. I like it better than the traditional use of schmutz alone. Twenty screws around an Oatey flashing seems nuts unless you have an irregular surface to conform to, or for your conduit roof penetration. Need a new metal roof? Go with true standing seam pans and use Unisolar PVL modules. Dick Ratico Solarwind Electric --- You wrote: Wrenches, It has been a while since I have seen this subject and I was wondering if there has been more experience in the field with using either EPDM or products such as http://www.eternabond.com/DoubleStick-p/cr-ds.htm for sealing L-feet or stand-offs directly to metal roofing. . . Seems to make sense to directly seal off the one or two holes for that lags rather than placing a boot over it and drilling 20 screws around the Otey. The only weakness I could see would be the seal directly over the lags, but I think this could be cured with a dollop of silicone or other EPDM safe caulk in and on top of the hole. My main worry is the compression of the material over time, which may compromise the bond/seal. Has anyone successfully used the Eternabond-looks like it could be a good solution. Best regards, Mark Dickson, NABCEP Certified Solar PV Installer T Oasis Montana Inc. --- end of quote --- _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
