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Wayne Irwin, President License #CVC56695 State Licensed Solar Contractor Pure Energy Solar International Inc. wa...@pureenergysolar.com http://PureEnergySolar.com http://SolarChargingStation.net 352 377-6527 Office 352 336-3299 Fax The Sun Is Always Shining! The content of this message is Pure Energy Solar Confidential. If you are not the intended recipient and have received this message in error, any use or distribution is prohibited. Please notify me immediately by reply e-mail and delete this message from your computer system. Thank you. Date: Fri, 7 Aug 2015 17:11:50 -0400 From: kjenergysyst...@gmail.com To: re-wrenches@lists.re-wrenches.org Subject: Re: [RE-wrenches] to flash or not to flash Not that the names of things matter that much but imho "flashing" does require an overlapping of some kind. An Oatey boot for a metal roof is more of a bedded fitting than a flashing. It relies entirely on fasteners and a sealing membrane whereas flashings rely mostly on natural forces like gravity. Perhaps an experienced roofer weigh in on this. Kurt Johnsen On Fri, Aug 7, 2015 at 3:21 PM, Jason Szumlanski <ja...@floridasolardesigngroup.com> wrote: "If you place a flat object on top of roofing without an uphill material lapping over the downhill object, you are not flashing. " By that logic, an Oatey boot is not a flashing for a plumbing vent on a metal roof. Just sayin'... Jason Szumlanski On Fri, Aug 7, 2015 at 2:19 PM, William Miller <william.mil...@millersolar.com> wrote: Ray: I have to respectfully disagree with your semantics. A flashing is an overlapping of roofing materials such that gravity will direct rain and melt water off of the roof. This is a universally accepted waterproofing method that does not depend on any sealant material. The concept is as ancient as the first, crude, thatched roof. If you place a flat object on top of roofing without an uphill material lapping over the downhill object, you are not flashing. What you have described is sealant-dependent weatherproofing. Regardless of the quality of the sealant, or lack thereof, I don’t think you can call it a flashed attachment. (The overarching point is a flashed attachment does not depend on a sealant. Any sealant has a finite lifespan. Removing the sealant variable from the equation results in more lasting installation.) Sincerely, William Miller Lic 773985 millersolar.com 805-438-5600 From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Ray Walters Sent: Friday, August 07, 2015 10:34 AM To: RE-wrenches Subject: Re: [RE-wrenches] to flash or not to flash My opinion is that if the L foot has enough surface area it constitutes a flashing, and that large flashings can actually cause more damage to the roof than they prevent. I also agree that an attachement doesn't constitute a penetration. I just finished an install on a metal roof with hundreds of screw holes. We added a few more screw holes, and ours have 20 times the sealant surface area. We did run a 1" conduit through the roof, and since it was an actual penetration, we used a very expensive flexible boot flashing. Personally, I think we need about a 3"x3" or 4" x 4" L foot with a double stick butyl tape on the bottom, and all will be well. I realize that the OP was referring to asphalt, but I will flash other roof types that don't do well with L feet ( like shake). _______________________________________________ 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 _______________________________________________ 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 _______________________________________________ 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
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