I use corrugated mounting bridges - that's the problem. If the center of the beam falls in the trough, the corrugated bridge is useless. I am not sure how blocking would help. Corrugated is a pain.
On Wed, Jul 4, 2012 at 12:11 PM, David Brearley < david.brear...@solarprofessional.com> wrote: > 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 > > -- Chris Mason President, Comet Systems Ltd www.cometenergysystems.com Cell: 264.235.5670 Skype: netconcepts
_______________________________________________ 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
