Yes last year I repaired a solar thermal system that I had installed in 1979, The unprotected rubber flashings we gone, the ones that I had for some reason put Aluminum foil tape over were still servicable. I did not photograph.
Darryl
From: Bill Loesch <solar1onl...@charter.net>
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Sent: Mon, April 25, 2011 4:57:14 AM
Subject: Re: [RE-wrenches] Oatey and Standoff vs QuickmountPV Labor
Mark and Jamie,
Also, not an answer to your labor question, but...
The flexible flashings you describe are inherently less durable than their non flex cousins. As you are well aware, the culprit is sun or perhaps more accurately, UV exposure. One solar thermal install which was still going strong some 20+ years later had painted those flex flashings and there was no deterioration that I could discern. Choosing the wrong paint could, I am sure, produce accelerated deterioration over doing nothing. As usual, caveat emptor.
Even with tightly spaced modules, there is still a gap (window) for the sun to peek through. How do you inspect those interior flex flashings during the life of the system or roof?
Bill Loesch
Solar 1 - Saint Louis Solar
314 631 1094
Solar 1 - Saint Louis Solar
314 631 1094
----- Original Message -----From: Mark FryeTo: 'RE-wrenches'Sent: Friday, April 22, 2011 9:07 PMSubject: Re: [RE-wrenches] Oatey and Standoff vs QuickmountPV LaborJamie,You did not ask, but I am offering:I find the Oatey flashing with the elastomeric boot to be a somewhat suspect product. I know, I know....you see them everywhere on the finest tract homes....but....My everlasting image is of 6 or 7 of them peeping out below the last row of modules..except..there wasn't any rubber there anymore...all rotted out.Back in the day I went for a custom rolled cone flashings that I could caulk into the post and slide a rubber counter-flashing over the whole thing.Overkill....perhaps.Best of Luck.
Mark Frye
Berkeley Solar Electric Systems
303 Redbud Way
Nevada City, CA 95959
(530) 401-8024
www.berkeleysolar.com
From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jamie Johnson
Sent: Friday, April 22, 2011 6:59 PM
To: RE-wrenches
Subject: [RE-wrenches] Oatey and Standoff vs QuickmountPV LaborWrenches,We have been asked to quote a large number of installs on comp shingle roofs for an individual owner who requires Oatey flashing's with a 3" standoff on all installations.For the past 2 years we have installed the QuickmountPV product on comp shingle roofs and are use to the labor rate quoted for that, my notes from 2+ years ago seem to reflect a 20+% savings in labor by using the QMPV vs the Oatey and standoff method.Since my notes may not be accurate, I am curious if you are willing to share, what the rest of you have experienced with the labor difference?Thanks in advance.Jamie Johnson
NABCEP Certified PV Technical Sales Professional
NABCEP Certified Solar PV Installer
General ManagerSOLAR POWER ELECTRIC
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