EPS Bermuda roof

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Author Message guest (Unregistered Guest) Unregistered guest Posted on Tuesday, March 12, 2013 - 10:28 am:    Anyone know of a US mainland source for Bermuda roof that uses shaped EPS foam instead of AAC (i.e., Kaidisen)? Designer directed me to company in Nassau that doesn't ship/market the product to mainland; designer's reference was for concept only. Sheldon Wolfe Senior Member Username: sheldon_wolfe Post Number: 624 Registered: 01-2003 Posted on Tuesday, March 12, 2013 - 01:13 pm:    Sorry, I can't help, but what a hoot! "designer's reference was for concept only." A Big D Designer doesn't worry about such trifling things as availability, suitability, constructability, or any other bility; the design is all that counts. Wayne Yancey Senior Member Username: wayne_yancey Post Number: 576 Registered: 01-2008 Posted on Tuesday, March 12, 2013 - 01:20 pm:    @guest, For concepts for a Bermuda roof refer to 1)SMACNA, 2)Copper Development Association (Sheet Copper Applications) and 3)Revere Copper Products, Inc, (Copper and Common Sense) There is enough Bermuda common sence concepts from these parties. Wayne George A. Everding, AIA, CSI, CCS, CCCA Senior Member Username: geverding Post Number: 658 Registered: 11-2004 Posted on Tuesday, March 12, 2013 - 03:04 pm:    ..nor accountability and liability, either. George A. Everding AIA CSI CCS CCCA Ingersoll Rand Security Technologies St. Louis, MO ken hercenberg Senior Member Username: khercenberg Post Number: 465 Registered: 12-2006 Posted on Tuesday, March 12, 2013 - 04:42 pm:    Big D Designers like this one offend my sensibilities. As an aside, how do you use EPS as a roof material? Roof insulation perhaps, but a roof material? For that matter, how do you use AAC as a roof material? You can't even leave it exposed in a cavity application. Sounds like Big D was what this 'designer' should have received in his/her materials class. Jeffrey Wilson CSI CCS Senior Member Username: wilsonconsulting Post Number: 93 Registered: 03-2006 Posted on Tuesday, March 12, 2013 - 05:01 pm:    Our guest is apparently looking for something like stepped-stone type roofing used in Bermuda -- not sheet metal "Bermuda Roofing." The company mentioned offers aerated autoclaved concrete as a substitute for the traditional limestone material. My best guess about the idea of using EPS foam is that the designer may have in mind a roof profile that gives the appearance of a traditional stepped-stone roof, but rendered in EIFS using foam build-outs. This should be feasible using products recommended by an EIFS manufacturer for horizontal surfaces. It would not involve a source for traditional roof assemblies of the type used in Bermuda. I can't imagine any other roofing application that uses EPS, unless covered by a roofing membrane. Guest (Unregistered Guest) Unregistered guest Posted on Tuesday, March 12, 2013 - 09:31 pm:    In both instances (Kaidisen and EPS), roof "slates" are coated with elastomeric coating. I've asked A/E how he plans to source his design "concept" but has yet to answer. I didn't think about EIFS on the horizontal; thanks for the thought, I will research that possibility with EIFS mfrs. Ronald L. Geren, AIA, CSI, CCS, CCCA, SCIP Senior Member Username: specman Post Number: 1093 Registered: 03-2003 Posted on Wednesday, March 13, 2013 - 01:52 am:    To use EIFS as a roof it will have to be tested per ASTM E 108 or UL 790, and I doubt any system has. Ron Geren, AIA, CSI, CCS, CCCA, SCIP www.specsandcodes.com Phil Kabza Senior Member Username: phil_kabza Post Number: 521 Registered: 12-2002 Posted on Wednesday, March 13, 2013 - 12:35 pm:    Maybe the designer can cut one out of foam core board? Steven Bruneel, AIA, CSI-CDT, LEED-AP, EDAC Senior Member Username: redseca2 Post Number: 389 Registered: 12-2006 Posted on Wednesday, March 13, 2013 - 01:27 pm:    Or the designer can make the roof tiles with a 3-D printer. Just tell them to get the app. ken hercenberg Senior Member Username: khercenberg Post Number: 467 Registered: 12-2006 Posted on Wednesday, March 13, 2013 - 01:55 pm:    that may be an option sooner than we realize: http://nocamels.com/2013/03/first-3d-printed-car-to-hit-the-roads-in-two-years/ I want one. John Bunzick, CCS, CCCA, LEED AP Senior Member Username: bunzick Post Number: 1486 Registered: 03-2002 Posted on Wednesday, March 13, 2013 - 04:29 pm:    The type of coating used in EIFS, in a near horizontal orientation = zero durability. Good luck. Ellis C. Whitby, PE, CSI, AIA, LEED® AP Senior Member Username: ecwhitby Post Number: 183 Registered: 03-2003 Posted on Wednesday, March 13, 2013 - 05:02 pm:    When I was with another firm, some years back, we designed a stainless steel “Bermuda roof, with rigid insulation and OSB. As I recall, the insulation and OSB was used form the “steps” of the Bermuda roof profile, then the stainless steel was formed as the visible roof surface. The whole assembly was on top of a second “roof” (rigid insulation, and OSB, and self repairing waterproof membrane [“ice and dam barrier” type material], all bearing on steel deck. I think that we had gypsum sheathing as the bottom layer on top of the metal deck. As I recall, we did this because the roof was a series of domes and the tops were flat. Even with soldered joints, we weren’t convinced the metal roof wouldn’t leak. As such, we designed the “double roof” I described. Additionally, this was a fully sprinkled commercial building, which probably had an effect on getting code approval regarding any flammability of the roof assembly. None of this answers “guests” question of course. Guest (Unregistered Guest) Unregistered guest Posted on Thursday, March 14, 2013 - 01:07 pm:    Thanks to all. Designer has "changed" to profiled metal roof panels. Sheldon Wolfe Senior Member Username: sheldon_wolfe Post Number: 625 Registered: 01-2003 Posted on Thursday, March 14, 2013 - 02:13 pm:    For the moment... Steven Bruneel, AIA, CSI-CDT, LEED-AP, EDAC Senior Member Username: redseca2 Post Number: 391 Registered: 12-2006 Posted on Thursday, March 14, 2013 - 03:59 pm:    Perhaps the conservative approach for the spec writer at this point is to just call this Section 07 30 00 - Probably Steep Slope Roofing.