| Author |
Message |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 986
Registered: 05-2003
| | Posted on Thursday, July 11, 2013 - 09:13 am: |    |
I've been told by a manufacturer's rep that MR Board no longer exists in the industry. Isn't this one of those terms that's going to be around until the cows come home. Green Board did go away, but I am still hearing of MR Board being used on a project, and no matter how many times I correct an architect or contractor it is a term that won't go away. |
Lisa Goodwin Robbins, RA, CCS, LEED ap
Senior Member
Username: lgoodrob
Post Number: 220
Registered: 08-2004
| | Posted on Thursday, July 11, 2013 - 09:35 am: | |
I've been told by both our National Gypsum and USG representatives that moisture resistant (MR) board is no longer being manufactured. There may still be some kicking around in warehouses and distribution centers. The industry wants us to move to glass fiber mat board or cement board (for tile).
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Ronald L. Geren, AIA, CSI, CCS, CCCA, SCIP
Senior Member
Username: specman
Post Number: 1126
Registered: 03-2003
| | Posted on Thursday, July 11, 2013 - 09:41 am: | |
Per ASTM C 1396, it is now called water-resistant gypsum board, even though some manufacturers may call it moisture-resistant. Manufacturers are also testing their water-resistant board for mold resistance, so you may hear the term "mold and moisture resistant gypsum board."
Ron Geren, AIA, CSI, CCS, CCCA, SCIP
www.specsandcodes.com |
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