The non-corrosive nature of premium MgO subfloor panels relies entirely on their chemical matrix:
Magnesium Sulfate Formulation (): By replacing Magnesium Chloride () with Magnesium Sulfate, the manufacturing process eliminates free chloride ions.
Zero Leaching: Sulfate-based boards do not exhibit hygroscopic (moisture-attracting) pulling of ambient water in high-humidity zones. Because the board stays dry internally and lacks chlorides, it will not degrade or corrode steel joists, light-gauge steel framing, or subfloor fasteners.
Acoustic & Structural Integrity: The resulting matrix is a dense, crystalline structure that provides excellent shear strength and acoustics without compromising the surrounding metal infrastructure.
For structural subfloor applications (such as modular construction, multi-family mid-rises, or heavy-duty commercial spaces), non-corrosive MgO boards typically conform to the following engineering profiles:
| Property | Typical Specification |
| Standard Thicknesses | 15mm, 18mm, 20mm |
| Edge Profile | Tongue & Groove (T&G) or Square-Edge (S-Edge) |
| Density | High Density ( to ) |
| Fire Rating | Class A1 (Non-combustible) / ASTM E136 |
| Flexural Strength | High structural capacity (capable of meeting span ratings for 16″ or 24″ on-center joist spacing) |
JUL
2026