It is important that the 'Easy Feet' or similar product is installed on a roof that meets certain criteria, as per the manufacturer. Other comparable products require ~1/2" (15/32") plywood or particle roof sheathing which is installed with a minimum specified nail pattern. The calculations would be affected by the spacing between the roof and the modules, and the amount of air that can get under the modules. If the panels are flush to the roof, then there is little or no uplift.
Nick Soleil Project Manager Advanced Alternative Energy Solutions, LLC PO Box 657 Petaluma, CA 94953 Cell: 707-321-2937 Office: 707-789-9537 Fax: 707-769-9037 ________________________________ From: benn kilburn <b...@daystarsolar.ca> To: Wrenches <re-wrenches@lists.re-wrenches.org> Sent: Mon, July 19, 2010 9:34:32 PM Subject: Re: [RE-wrenches] attaching to roof decking - Foam Insulation Install after a few requests, i have not been getting any feedback from Direct Power regarding pull out specs for their 'easy feet', which i need for my engineer to be able to give me the go-ahead to use them. does anyone care to comment on the fact that this mounting method only attaches to the roof decking and not the rafters? i have always been under the impression that if you only attach your racking to the roof decking, it (the decking) could 'rip right off the roof' in that worst case scenario wind storm! but by anchoring to the trusses, the whole roof structure would/should withstand the wind load. or maybe i was just under the wrong impression and the spiel was that the decking would not hold the screws and the screws would pull out! so am i to understand that by using several (of the right size) screws at each anchor point, the decking (if adequate) will be able to support an array (even if tilted up to 60 deg)??? cheers, benn DayStar Renewable Energy Inc. b...@daystarsolar.ca 780-906-7807 HAVE A SUNNY DAY ________________________________ From: frene...@psln.com To: re-wrenches@lists.re-wrenches.org Date: Mon, 19 Jul 2010 16:32:23 -0700 Subject: Re: [RE-wrenches] Foam Insulation Install I have also had a great experience using "Easy Feet" from Direct Power. You use four of their screws per foot and Jeff Randall there can give you pull out specs in roof decking, as I recall they match or exceed that of the Lag/rafter combo. Bill Feather River Solar Electric 4291 Nelson St. Taylorsville, CA 95983 530-284-7849/6544 fax ----- Original Message ----- From: hol...@sbcglobal.net >To: RE-wrenches >Sent: Monday, July 19, 2010 12:24 PM >Subject: Re: [RE-wrenches] Foam Insulation Install > > >Antony, >Right on! The Eco-fasten will solve the issue - it's been pull-out tested >sans-rafter penetration. Have bought the eco-green fasteners from them, >will >again. As far as dealing with them - it's a great pleasure to be able to >talk to someone with good product knowledge that will take the time to >answer >stupid questions. > > >Holt E. Kelly >Holtek Fireplace & Solar Products >500 Jewell Dr. >Waco TX. 76712 >254-751-9111 >www.holteksolar.com > >----- Original Message ----- >>From: Antony Tersol >>To: re-wrenches@lists.re-wrenches.org >>Sent: Monday, July 19, 2010 11:33 AM >>Subject: [RE-wrenches] Foam Insulation Install >> >>Have you looked at EcoFasten mounting. They have a mount that uses 8 >>screws per attachment, so can theoretically hold without going into the >>rafters. Then could use a large flashing over that to integrate with >>the >>shingles. >> >> >> >>I think they're an offshoot of AlpenSnowguards in Vermont. We started >>working with Alpen to source S5 clamps several years ago, and have found >>them great to work with. >> >> >> >>We're a West coast company - there were lots of other distributors >>closer, >>but Alpen got and kept our business. It's kind of funny - when I call >>them, I feel like I'm talking with someone in one of those old hardware >>stores with everything you need right there in bins, and when I call the >>other guys it seems like someone in a sales office who never handles the >>product. >> >> >>The EcoFasten crew is similarly helpful, and they have some well thought >>out products. The name I have in my rollodex is Chris Sterns, at >>877-859-3947. >> >> >>http://www.ecofastensolar.com/our-products/eco-fasten >> >> >>Their website is pretty comprehensive, and includes leak and load tests >>and >>building code info. Other cool mounting products too. >>-- >>Antony Tersol >>Solex / Applied Solar Energy >>831-333-1919 >> >> >> >>You wrote: >> >> >>For residential install with the spray foam insulation >> >>Underside of deck has 12"+ of foam.....no way to accurately locate rafter >>there.....hammer and ear also out of the question...........don't think >any >>of the stud finders will work....been told that peeling back shingles >> >>to >>locate rafter is only accurate way.......would like to avoid that if >>possible..........any suggestions? >> >>Holt E. Kelly >>Holtek Fireplace & Solar Products >>500 Jewell Dr. >>Waco TX. 76712 >>254-751-9111 >>www.holteksolar.com >>________________________________ >>_______________________________________________ >>List sponsored by Home Power magazine >> >>List Address: RE-wrenches@lists.re-wrenches.org >> >>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: RE-wrenches@lists.re-wrenches.org 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 ________________________________ No virus found in this incoming message. 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