Hi Ray Can you elaborate on how a large flashing can cause more damage than it prevents?
Thanks Jay Peltz power Sent from my iPhone > On Aug 7, 2015, at 10:34 AM, Ray Walters <[email protected]> wrote: > > 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). > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer > 303 505-876 > _______________________________________________ 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
