In some cases, you can install blocking to get up on the ridge consistently. One alternative to hangar bolts is to use corrugated mounting bridges from DPW Solar or something similar from another company.
Sorry I can't link to the PDF. Google: "corrugated mounting bridges" Since exposed-fastener metal roofs already have a bunch of holes in them, you're not voiding the roof warranty by punching more holes in the ridge. (I don't think these roofs even meet the NRCA definition of a "roof assembly" because of the exposed penetrations.) Penetrations in the valleys on a roof are problematic for obvious reasons. On Jul 4, 2012, at 6:01 AM, Chris Mason wrote: > All of this refers to shingle roofs, which we don't see much of. We mostly > deal with concrete and corrugated steel/galvalume, the latter being a > nightmare. Does anyone have good ideas for dealing with corrugated? There's > no way to flash it, the blocks are fine when you hit a beam on the ridge but > half the time your penetration has to be on the trough of the corrugated > steel. > Other than lots of goop, I don't know how else to seal it. > _______________________________________________ > 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 > _______________________________________________ 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
