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M4™ Fire rated wall panels
Noncombustible Structural Cement MgO Board With Integrated Fire Rating
M4 Sheathing is a magnesium oxysulfate structural panel for walls where fire resistance and moisture tolerance are required.
key Properties
ICC-ESR 3840 recognition for structural wall applications
1-hour fire-rated assemblies per ASTM E119
Class A surface burn per ASTM E84
Noncombustible per ASTM E136
Shear values per ASTM E72 testing
Chloride content < 1%, resistant to mold and corrosion
Advantages
One layer provides structural sheathing and fire rating
Dimensionally stable and weather-resistant
Accepts most claddings and WRB systems
Applications
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Exterior and interior load-bearing walls
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Fire separation and party walls
Exterior and interior load-bearing walls
Fire separation and party walls
Download the M4 Wall Submittal and ICC-ESR 3840 for specifications and approvals.
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