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Ronald L. Geren, RA, CSI, CCS, CCCA, MAI
Senior Member
Username: specman

Post Number: 247
Registered: 03-2003
Posted on Friday, May 05, 2006 - 02:07 pm:   Edit PostDelete PostPrint Post

I'm reviewing a set of documents where hat channel is indicated to be installed horizontally for attachment of vertical copper panels. The problem is that the hat channel is attached through the exterior sheathing (with a spray-applied air barrier) to the vertical studs. Essentially, any moisture that gets behind the copper panels to the air barrier will be blocked from draining by the hat channel.

This is in the extreme, dry southwest, but I'm concerned, regardless. Is there a "drainable" hat channel? For those in moisture-prone areas, have you encountered this condition before? Am I overly concerned?

Thanks.

PS: The copper panels and steel hat channels are separated by rubberized asphalt for cathodic protection (I just knew somebody would have brought that up).
Ralph Liebing, RA, CSI
Senior Member
Username: rliebing

Post Number: 369
Registered: 02-2003
Posted on Friday, May 05, 2006 - 02:58 pm:   Edit PostDelete PostPrint Post

How about suggesting an innovative use of double-leg resilient channels, like Dietrich's RCDN/RCDE, with perforations down?
Ronald L. Geren, RA, CSI, CCS, CCCA, MAI
Senior Member
Username: specman

Post Number: 248
Registered: 03-2003
Posted on Friday, May 05, 2006 - 03:08 pm:   Edit PostDelete PostPrint Post

That just might work. I'll propose that. Thanks, Ralph!

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