Wood/steel Building Flooring Solution
Wood/steel Building Flooring Solution
This loft and mezzanine floor slab solution uses a chloride-free sulfate MgO board as a dry-installed load bearing floor board over designed steel floor framing. It replaces wet concrete work in loft conversion, warehouse mezzanine, factory platform and office mezzanine projects, and is supplied as a structural flooring board rather than a decorative panel.
The slab is typically 20–30 mm thickness, but thickness alone never sets the load capacity. Beam or joist spacing, fixing, joints, edge support and the governing deflection check all belong to the complete floor construction. Start from the high-load-bearing MgO board for mezzanine floor product page, or see the modular and container house flooring solution for adjacent framing types.
Solution Configurations by Application
| Application | Configuration principle |
|---|---|
| Loft conversion | 20–30 mm MgO floor slab; confirm steel beam or joist spacing, use load, finish and vibration criteria before fixing the panel direction. |
| Warehouse mezzanine and factory platform | Check the complete frame, concentrated load, edge support and opening locations, then run the deflection check on the assembled floor rather than on the board alone. |
| Office mezzanine and dry renovation floors | Confirm existing structural capacity, finished floor height, wet-work limits and board joints; dry installation avoids curing time and site water. |
Suitable Projects and Buyers
This solution is intended for steel-structure and modular-building companies, renovation contractors, distributors and floor-slab buyers working on loft conversion, warehouse mezzanine, factory platform and office mezzanine schemes.
It focuses on matching the complete floor construction and does not use a single-board demonstration as a substitute for structural design. A published panel or demonstration image is not a general design load.
For adjacent applications, see the office and hotel raised floor solution.
Load Bearing Principle
Board thickness alone does not determine load capacity. The 20–30 mm range is a starting point for selection, not a load rating.
Deflection check and vibration criteria belong to the complete floor. Steel beam or joist spacing, fixing method, joints and edge support all change the result.
Concentrated load must be verified project by project. Forklift traffic, partitions, machinery and point loads require project-specific calculation.
The 600×600 mm support grid is a stated test condition for a 30 mm panel, not a substitute for structural calculation of your own frame.
Common Project Questions
How should the 20–30 mm thickness range relate to steel beam or joist spacing?
Should concentrated load, vibration and deflection be assessed for the board or the complete floor?
How do finish, joints, edges and stair openings affect selection?
What does a 600×600 mm support grid actually prove?
Which information is needed to run a deflection check before ordering?
Shared Value and Use Boundaries
High Load-Bearing Capacity
An engineered mezzanine floor board designed for structural spanning between engineered supports.
Standard Thickness Range
Typically 20–30 mm thick to meet a range of structural and load requirements, subject to the confirmed model.
Complete Floor System Integration
Incorporates fasteners, joints, edge support and final finish as a complete structural flooring board solution.
Performance Parameters
Load capacity, stiffness, vibration resistance and deflection depend on thickness, support spacing, fixing method and frame design.
Information Required for Project Selection
Use of the loft, mezzanine or renovation floor
Loft conversion, warehouse mezzanine, factory platform or office mezzanine, plus intended use.
Beam or joist material, support spacing and edge conditions
Beam or joist material, steel beam or joist spacing, support grid and edge support detail.
Thickness, panel size, laying direction, joints and fixing
20–30 mm thickness, panel size, laying direction, joint arrangement and fixing method.
Load, vibration, deflection and final finish
Design load, concentrated load, vibration criteria, deflection check and the final floor finish.
Products Applied In This Project
High-Load-Bearing MgO Board for Mezzanine Floor
20–30 mm load-bearing MgO floor slab over designed steel framing, dry installed.
High-Strength MgO Board for Prefab House Subfloor
Structural flooring board for prefabricated and quick-assembly floor frames.
High-Strength MgO Board for Container House Floor
Floor board for container house and modular unit floors over steel base frames.
Basic Quality Evidence
Test reports, certificates and production evidence shown externally should correspond to the actual product model, specification and test conditions. This loft and mezzanine floor slab solution page provides basic evidence and does not use unrelated certificates to infer complete-system performance.
With the currently available materials, evidence of real production, finished-product inspection and principal certificates is sufficient. Detailed test data can remain on the relevant product or quality-certification page.
FAQ
Send Your Loft or Mezzanine Floor Slab Requirements
Share the floor use, beam or joist spacing, slab thickness, concentrated load and vibration criteria, and the final finish — our team will confirm the board and complete floor construction details. Contact Massif or browse the FAQs.
