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Robin E. Snyder
Senior Member
Username: robin

Post Number: 670
Registered: 08-2004
Posted on Thursday, March 02, 2017 - 12:04 am:   Edit PostDelete PostPrint Post

Anyone ever write a spec for this roofing system they would be willing to share? Robin@spectraspecs.com
David J. Wyatt, CDT
Senior Member
Username: david_j_wyatt_cdt

Post Number: 170
Registered: 03-2011
Posted on Thursday, March 02, 2017 - 11:59 am:   Edit PostDelete PostPrint Post

If it were me, I would simply write a closed proprietary spec for the Zahner inverted system. After submittals, there's not much else to say unless the owner wants to pretend the spec is open for substitution proposals.
Robin E. Snyder
Senior Member
Username: robin

Post Number: 671
Registered: 08-2004
Posted on Thursday, March 02, 2017 - 12:03 pm:   Edit PostDelete PostPrint Post

well, yes, i am hoping maybe someone has already written one and would be willing to share
Greta Eckhardt
Senior Member
Username: gretaeckhardt

Post Number: 50
Registered: 08-2013


Posted on Thursday, March 02, 2017 - 02:02 pm:   Edit PostDelete PostPrint Post

I am not familiar with this product, but I took a quick look using an internet search.

Note that this is not an inverted roof, it is a metal roof with inverted seams. I think you could start with MasterSpec Section 074113.13 - Formed Metal Roof Panels and modify the language regarding seams and attachment systems using Zahner's product data.
David J. Wyatt, CDT
Senior Member
Username: david_j_wyatt_cdt

Post Number: 171
Registered: 03-2011
Posted on Friday, March 03, 2017 - 08:18 am:   Edit PostDelete PostPrint Post

Robin,

My reply to your request reads a bit rude this morning. I apologize.

Your question has me looking for information about this inverted seam roof system. It appears to have two outstanding attributes - a smooth surface and a unique water management system. But there is very little information about it on the internet. I am going to look further into this and I will see what comes of it.
David J. Wyatt, CDT
Senior Member
Username: david_j_wyatt_cdt

Post Number: 172
Registered: 03-2011
Posted on Friday, March 03, 2017 - 08:26 am:   Edit PostDelete PostPrint Post

Here is a little bit of information. Not much, but it is a start.

http://www.patentbuddy.com/Patent/5394666
David J. Wyatt, CDT
Senior Member
Username: david_j_wyatt_cdt

Post Number: 173
Registered: 03-2011
Posted on Friday, March 03, 2017 - 08:51 am:   Edit PostDelete PostPrint Post

More information, nearly a descriptive specification for purposes of patent procedures:

http://www.google.com/patents/US5394666
Guest (Unregistered Guest)
Unregistered guest
Posted on Friday, March 03, 2017 - 01:45 pm:   Edit PostDelete PostPrint Post

System appears to, essentially, be a rainscreen type system. So why not start with a metal roof panels master and cut-n-paste rainscreen language from wall panel master; I think that should get you 90% there? the rest can, as David initially said, be a closed prop spec by essentially referring to manufacturer's standards, etc.?
Michael Chusid, RA FCSI CCS
Senior Member
Username: michael_chusid

Post Number: 251
Registered: 10-2003


Posted on Friday, March 03, 2017 - 07:11 pm:   Edit PostDelete PostPrint Post

Tell Zahner to get their act together and write a guide specification. You can refer them to me if you are so inclined, as I write specs of manufacturers.
Michael Chusid, RA FCSI CCS
www.chusid.com www.buildingproduct.guru 818-219-4937
David J. Wyatt, CDT
Senior Member
Username: david_j_wyatt_cdt

Post Number: 174
Registered: 03-2011
Posted on Tuesday, March 07, 2017 - 09:40 am:   Edit PostDelete PostPrint Post

I called Zahner's (ZAY-ner) office in Kansas City this morning to see what is up with guide specs. They are very polite, but nobody is going to get anything from them by telling them what they should do. Two things they have perfected give them high-level flexibility in design - the water channeling system and the very flat seam. These are closely guarded and the representative indicated that only under terms of strict confidentiality do they share information about them. All fortifications and black boxes have ways inside, but this one seems impenetrable for now.

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