I wouldn't install a comp roof system without the flashings myself, I am in Northern California and the extreme weather both heat and cold are murder on roofing.
Jason West Coast Sustainables Jason Andrade C-46# 974647 (530) 410-4745 Cell (530) 241-7498 Office (530) 348-5301 Fax ja...@westcoastsustainables.com -----Original Message----- From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of re-wrenches-requ...@lists.re-wrenches.org Sent: Tuesday, August 25, 2015 6:42 PM To: re-wrenches@lists.re-wrenches.org Subject: RE-wrenches Digest, Vol 8, Issue 294 Send RE-wrenches mailing list submissions to re-wrenches@lists.re-wrenches.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.re-wrenches.org/listinfo.cgi/re-wrenches-re-wrenches.org or, via email, send a message with subject or body 'help' to re-wrenches-requ...@lists.re-wrenches.org You can reach the person managing the list at re-wrenches-ow...@lists.re-wrenches.org When replying, please edit your Subject line so it is more specific than "Re: Contents of RE-wrenches digest..." When responding to posts within the Digest, be sure to restore the Subject: line to the original, and please edit out any extraneous lines from the quoted message. Today's Topics: 1. Re: to flash or not to flash (Daniel Young) 2. Re: Schneider XW battery monitor (jarmo.venalai...@schneider-electric.com) 3. Re: clear sealant recommendations (James Rudolph) 4. Re: to flash or not to flash (frenergy) ---------------------------------------------------------------------- Message: 1 Date: Tue, 25 Aug 2015 17:19:30 -0400 From: "Daniel Young" <dyo...@dovetailsolar.com> To: "'RE-wrenches'" <re-wrenches@lists.re-wrenches.org> Subject: Re: [RE-wrenches] to flash or not to flash Message-ID: <013601d0df7b$bb6b3080$32419180$@com> Content-Type: text/plain; charset="utf-8" Figured I would dig through the responses to this list topic since I posted it as a poll, of sorts. My final count was: 10 votes to flash, 4 votes not to flash. Those who read all the responses probably know there are a few on either side that would be OK with the other option. I?m still on the flashing side of things, though I might consider letting the client have a choice. If I explain the differences, and show them the $ difference, they can help make the decision (read that as? ?take some liability off of me J?). We do that now with US vs non-us made solar modules. It?s not the same type of comparison here, but at least if the client really wants a lower cost, they know how they?re getting it, and future calls from the client should get tempered by the knowledge that they chose the attachment method. Some really good points were raised on this topic, thanks to everyone who participated. With Regards, Daniel Young, NABCEP Certified PV Installation ProfessionalTM: Cert #031508-90 From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason Szumlanski Sent: Monday, August 10, 2015 5:42 AM To: RE-wrenches Subject: Re: [RE-wrenches] to flash or not to flash Although my mind is kinda' made up, this thread has really got me thinking and researching. I scoured the NRCA manual, which does not really define "penetration," but it does say in the shingle manual: "Penetration Flashings: There are many small penetrations that need to be flashed into asphalt shingle roof systems, such as vent pipes, exhaust vents, exhaust fans, furnace or water heater flue pipes, electrical standpipes and others." There is also a graphical figure showing these various penetrations. The one thing these all have in common is that there is a substantial air gap cut fully through the roof plane. It occurred to me that ridge caps and vents on shingle roofs use exposed fasteners to nail or screw them to the decking. The NRCA manual says about this: "Exposed fasteners should be sealed with elastomeric sealant or asphalt roof cement on the last ridge piece of a run, at the intersection of hips to a ridge and at the intersection of a ridge to another plane." Also read the Snow Guard section for metal roofs, which allows attachments sealed to the flat part of the roof pan with sealants. Until the manual specifically addressed the solar "attachments" and "fasteners" we are debating about, it's open to interpretation. _______________________________________________ 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
