Daniel, My answer is to flash until others prove me wrong.
I am in the same position you are, speaking to the same manufacturers you are, and probably dealing with the same low competitor pricing you are. These products sure sound tempting. Over the past decade I have probably removed a dozen 80's era hot air or hot water systems that were directly attached to roofs (installed by others). In every instance the roof was a complete mess and required deck replacement. I now tell homeowners just to contact a roofer and have them dispose of the collectors in the process of re-roofing - we will come out after the new roof is in place. I think you summed up the sealant problem quite well. I sell my systems as a 25 year product. I am not satisfied that butyl is a 25 year answer. Until someone convinces me otherwise, I will relate as much to my customers and proceed with proper flashings. Good poll. Matt Matthew Partymiller Solar Energy Solutions LLC (877) 312-7456 [email protected] On Thu, August 6, 2015 12:47 pm, Daniel Young wrote: > Writing the subject above, it seems like I've heard this question on the > wrench list before, but I could not find it in my old email archives. Feel > free to pint me back to the old discussion if it's there. > > > > I've been using a flashing based roof attachment for 8+yrs now (quick > mount or similar). Now we are looking at Rail-less systems (quick rack is > a good example). There is also a non-flashed rail-less racking from > roof-tech http://roof-tech.us/ . I've always been of the opinion that > simply crushing some sealant/gasket onto an asphalt shingle work fine at > first (the test data from roof-tech is impressive), but would be an issue > 10+yrs down the > road (thermal expansion movement, freeze/thaw, etc). I can make a good > waterproof seal at first by just slathering some butyl/silicone to an > L-foot > and cranking it down on the shingles, but that practice really disappeared > 8+yrs ago. > > > > > Maybe consider this a Poll: (to flash, or not to flash) > > > > > With Regards, > > > > > Daniel Young, > > > NABCEP Certified PV Installation ProfessionalTM: Cert #031508-90 > > > _______________________________________________ > List sponsored by Redwood Alliance > > > List Address: [email protected] > > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.ht > ml > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
