Gypsum board edge beads

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Author Message Tracy Van Niel, FCSI, CCS Senior Member Username: tracy_van_niel Post Number: 337 Registered: 04-2002 Posted on Monday, January 05, 2015 - 07:41 am:    We are having a discussion in the office about gypsum board edge beads and I have been asked to gather the collective wisdom found on this discussion forum. What types of corner bead materials do you permit in your project specifications (non-residential projects)? Specifically, do you permit other than hot-dip steel and if so, what and why and where (permitted in some locations but not others?)? We do not do any residential building, it's a good mix of health care, school, library, and civic type projects. Thank you! Tracy L. Van Niel, FCSI, CCS Nathan Woods, CSI, CCCA, LEED AP Senior Member Username: nwoods Post Number: 619 Registered: 08-2005 Posted on Monday, January 05, 2015 - 09:05 am:    I have found the plastic bullnose trims (for radius corners) to be more durable than metal due to their superior thermal stability. The tape joint over metal trims tends to crack, particularly near windows where the walls receive direct sunlight. The metal trims just expand too much IMHO. Jeffrey Wilson CSI CCS SCIP Senior Member Username: wilsonconsulting Post Number: 159 Registered: 03-2006 Posted on Monday, January 05, 2015 - 09:11 am:    For edge trim & cornerbead material, I have typically allow galvanized or aluminum-coated steel sheet, rolled zinc, or paper-faced galvanized steel sheet. I have never been asked to otherwise limit the materials and have not rec'd negative feedback related to these options. My specs do not list L-bead or U-bead trims, only LC-bead which provides a better finish for exposed gyp board edges. I suggest paper-faced structural plastic drywall corners (Structus "NO-COAT") to my clients for treating outside corners in situations where damage might occur and another type of corner protection is not spec'd. Jeff Wilson Wilson Consulting Inc Narberth PA Steve Gantner, CSI, CCS, CCCA Senior Member Username: sgantner Post Number: 38 Registered: 08-2007 Posted on Monday, January 05, 2015 - 12:47 pm:    I specify Trim-Tex, http://www.trim-tex.com/. They manufacture a plastic corner and many other shapes which quite literally can take a beating. While not easy to do, the metal corner can dent easier than the plastic. Tracy Van Niel, FCSI, CCS Senior Member Username: tracy_van_niel Post Number: 338 Registered: 04-2002 Posted on Tuesday, January 13, 2015 - 03:46 pm:    Thank you all for the input! It is much appreciated. Tracy Tracy L. Van Niel, FCSI, CCS