I haven't read up on the mentioned structural screws yet, but do they specifically state that they can be driven "without" a pilot hole? What is the justification and how are they different so that they won't cause a board to split under pressure? Does anyone have some good info on this?
benn Sent from a 'smart' phone, with tiny keys. Please excuse shortcuts and typos. On 2012-07-03, at 3:53 PM, "David Brearley" <[email protected]> wrote: > +1 on the use of structural screws. We ran an article about lag screws a > couple years ago: > > http://solarprofessional.com/article/?file=SP3_4_pg70_Shelly > > One of the things that surprised me when I read this manuscript is how > variable lag screws are in terms of construction and quality. Besides the > convenience of being able to drive a structural screw without a pilot hole, > the engineering specs are likely better documented and the manufacturing > tolerances are probably tighter as well. > > FWIW: I think that using unflashed attachments in these litigious times is > unwise. It's not consistent with best practices in the construction industry. > It does not meet building codes. It violates the roof warranty. It makes your > competition look good. > > We ran our first article on this topic 4 years ago, in our inaugural issue of > SolarPro magazine: > > http://solarprofessional.com/article/?file=SP1_1_pg72_Fain > > The industry has come a long way since then, both in terms of awareness and > in terms of off-the-shelf flashed attachment options. There are so many > quality flashed attachment solutions to chose from now that I'm not sure why > anyone would knowingly expose themselves to a possible construction > negligence claim. > > Drive straight, > > David Brearley, Senior Technical Editor > SolarPro magazine > NABCEP Certified PV Installer ™ > [email protected] > Direct: 541.261.6545 > > On Jul 3, 2012, at 4:11 PM, Garrison Riegel wrote: > >> The EcoFasten GF1 flashing is easy to install on a retrofit and will not >> necessarily add any height to the rail. If you do need to trim the >> flashings installed around the skylight, then I would recommend adding >> sealant to these penetrations. We ditch the included lag and use a 5/16” >> GRK RSS (self tapping structural screw). The combination works great and >> does not require a pilot hole. >> >> RSS: >> http://www.grkfasteners.com/en/RSS_1_2_information.htm >> >> GF1 >> http://ecofastensolar.com/pdf/GF1%20Cutsheets.pdf >> >> Best, >> >> Garrison Riegel >> Project Manager >> >> Solar Service Inc >> [p] 847-677-0950 >> [f] 847-647-9360 >> www.solarserviceinc.com >> >> NABCEP Certified Solar PV and Thermal Installer™ >> >> >> “There is no room for flashings. The L feet will go very close to the >> skylights and the flashing would hit the edge of them. Plus there is an >> existing array that was done by another installer that is done with L feet >> only. The new array would be higher.” >> >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: [email protected] >> >> Options & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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