William, "If we are going to do solar right, we need to be electricians and roofers." This is so true, I fully agree. It is really to bad that many PV installers don't see it this way.
I like that I will have the opportunity to work on a new roof type, and I am grateful that the Wrenches are available to share some key ideas and proven methods for a roof type and attachment method that I have not been able to spend much/any time on yet. For stanchions, wouldn't a (diamond/carbide) holesaw be the tool of choice for cutting holes in the tile to allow the stanchion to protrude? The holesaw could be used with either a right-angle grinder or drill. Not that it matters, but just to point it out again, these are metal roof tiles with a stone finish. >>metrotile_medit.cfm <http://metroroofproducts.com/metrotile_medit.cfm> >From a weather proof perspective the roof hooks contour around the tiles, so there is no penetrating the tile or flashing needed. But Jason and yourself suggested wind uplift may be a factor and as Peter mentioned and I had read in the instructions, the hooks may rest on the lower tile (not good) so they may need to be shimmed and the upper tile may still have to be cut to fit around it. I definitely like the concept of the stanchions being solidly attached to the roof. Do you care to share which is your flashed tile stanchion of choice? Thanks, benn DayStar Renewable Energy Inc. www.daystarsolar.ca * Ph: 780-906-7807 Construction Electrician Solar Photovoltaic Systems Certified Certificate # 0007S HAVE A SUNNY DAY On 18/07/12 6:29 PM, "William Miller" <will...@millersolar.com> wrote: >Benn: > >Stanchions are tried and true, solid, do not leak and do not allow >uplift. If we are going to do solar right, we need to be electricians >and >roofers. This means we have to cut tile. I'd get some scraps and >practice. The new 4 to 4-1/2" right angle battery grinders with diamond >wheels may be real practical. It's been a few months so I forget what >tool >we used. > >Wm > > > >At 08:36 AM 7/18/2012, Benn At DayStarSolar wrote: >>William, Jason; >>I appreciate the suggestion, it sounds like an ideal solution. >> I do wonder why you prefer posts when you could use the tile hooks and >> avoid the extra work and time of cutting and flashing? If it makes for >>a >> better attachment structurally and weather-proof wise, then I'm all for >>it. >>Could you make a few points for/against tile hooks vs flashed posts? >> >>Thanks. >>benn > >_______________________________________________ >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
