Silicone is not a roof mastic and it does react to Alu despite your record w/ your historic installation methods. We and our industry are now in the 21st century with 21 century requirements and many hi quality roof mastic sealants. The way I figure it is that I am a professional solar installer, I am not a roofer nor a sealant engineer but they have provided our industry with requirements and products to ensure my clients receive hi level of quality installations despite the costs. On Aug 6, 2015, at 2:13 PM, Jason Szumlanski wrote:
> This started as an asphalt shingle attachment discussion, so it's important > to note that many of the sealants from Sika are NOT compatible with > asphaltic/bitumunous surfaces. Many competitors are still using products from > this company that are specifically noted by the manufacturer as not > compatible with the materials being sealed. Make sure your sealant is > compatible with the roof! > > > > > On Thu, Aug 6, 2015 at 1:34 PM, <jarmo.venalai...@schneider-electric.com> > wrote: > Hi: > > People may already know about this, but I thought I would pass it on in case > some dont. > > We do a lot of work with the boating and RV industry in the US and overseas. > > One sealant name which has come up a lot with strong positive reviews > regarding age related drying/shrinking not only in the US but overseas as > well is SIKA. > > Here's a link to their website, > > http://usa.sika.com/ > > JARMO > _____________________________________________________________________________________ > > > Jarmo Venalainen | Schneider Electric | Xantrex Brand | CANADA | > Sales Application Engineer > Phone: +604-422-2528 | Tech Support: 800-670-0707 | Mobile: > +604-505-0291 > Email: jarmo.venalai...@schneider-electric.com | Site: www.Xantrex.com | > Address: 3700 Gilmore Way, Burnaby, BC V5G4M1 > <Mail Attachment.gif> > > > From: "Matt Partymiller" <m...@solar-energy-solutions.com> > To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>, > Date: 08/06/2015 10:16 AM > Subject: Re: [RE-wrenches] to flash or not to flash > Sent by: "RE-wrenches" <re-wrenches-boun...@lists.re-wrenches.org> > > > > > 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 > m...@solar-energy-solutions.com > > > 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: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > t...@swnl.net www.SWNL.net > Solarwinds Northernlights > Serving Mid Coast Maine & Northern California > 207-832-7574 Cl. 610-517-8401 > > Blair "TUMP" May > ******** MAINE'S CHARTER ******** > NABCEP "Certified PV Installer" > > ******** MAINE'S CHARTER ******** > Trace Xantrex "Certified" Dealer / Installer" >
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