Magnesium Oxide Board Consensus Committee (IS-MGOB)

ICC 1125 Standard for Classification of Magnesium Oxide Boards and Construction

Work Group Meetings Schedule. 

All meetings are central time.  Contact LaToya Carraway or Jason Toves for connection information or to join a working group.

  • Floor and Subfloor Working Group 2:30 p.m., May 17th.
  • Sheathing (Exterior and Interior Walls and Roof Sheathing) 2:30 p.m., May 20th.
  • Tile (Backerboard) 8:30 a.m., May 21st.
  • Administration, Definition, Correlation (To be determined)

The second ICC 1125 Committee public meeting will be on Tuesday, May 28th, from 12:00 p.m. to 1:00 p.m. (central time).  Interested parties can contact LaToya Carraway ( and Jason Toves ( to get the connection information for the meeting and to be included in future committee emails.

The first ICC 1125 Committee meeting was held on May 7, 2024 to begin development of the new standard.  Meeting minutes pending committee approval are posted below.  The next meeting is scheduled for May 28. 2024 at noon CT.  Interested parties can contact LaToya Carraway or Jason Toves  to get the connection information for the meeting and to be included in future committee emails.

The first edition of ICC 1125 is being developed under the Code Council’s ANSI Accredited Consensus Procedures.

The Code Council is developing this new standard to be referenced in the I-Codes. In response to feedback from industry, the Code Council identified that a North American product standard for building and construction uses of Magnesium Oxide (MgO) boards does not exist, and the product is viewed as unique to each manufacturer.  MgO board usage in North American construction is growing, and an industry standard to establish minimally acceptable performance levels to ensure proper MgO board performance in buildings is needed.

A call for committee was posted with an application deadline of October 13, 2023 to solicit committee members of various interest categories to create a balanced committee in accordance with ANSI’s Essential Requirements. The ICC Board of Directors made the final appointments at the March 2024 meeting.

The committee will have an orientation meeting on April 5, 2024 in preparation of beginning the development of the standard.

The Code Council adheres to openness and transparency in our Standards development process. All ICC Standards committee meetings are open to the public. Any interested party can participate in committee meetings and can be considered by the committee for membership on any work-group that the committee creates.

Please contact the ICC staff secretariats, Jason Toves, Sr. Technical Staff, or LaToya Carraway, Technical Staff, if you wish to be placed on the "interested party" list and receive information on how to participate in the public committee meetings or join a work group created by the committee.

Meeting Documents