You don't screw the roofing pans down through the pan, they are all held down with some kind of clip system; there are no roof penetrations, as the hold down screws are under the roofing.
I'm not talking about seam clamps at all. But using a boot flashed stand-off foot.
We looked at S-5! clamps, but they aren't rated for many types of metal roofs. So we are going to use a Unirac stand-off foot lagged through the pan into the roof, with a rubber boot flashing. However, I'm concerned about the impact of fixing the roof in the middle of the pan with the lags on the foot constraining thermal expansion after seeing a European mounting foot system that they use a grinder to cut a hole in the metal roof, lag to the sheathing directly and use an overlapping rubber seal so the roof can move independently of the mounting foot.
Has anyone had problems with thermal expansion and mounting feet lagged through the roofing pan?
Troy Harvey --------------------- Heliocentric 801-453-9434 tahar...@heliocentric.org _______________________________________________ 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
