Steel frameworks are usually considered the backbone of any modular construction building. Nevertheless, the flooring quality is equally essential for occupants and workers inside. Nowadays, a modular unit must utilize a wide range of high-performance materials to support a healthy, secure, and durable environment. Among these products, the Magnesium Oxide (MGO) board plays a crucial role. The article is about how prefabricated K-type dormitory MGO floorings have become the standard of safety and durability for prefabricated dormitories, thus displacing the traditional timber solutions.

I am a Senior Project Manager at ZN House. My record shows an accumulation of more than 7 years of expertise, specializing in modular material engineering and workforce housing safety. Through my career, I have been choosing parts that are capable of withstanding the deterioration caused by fast deployment and heavy industrial use. I have had the opportunity to personally witness the impact of the right flooring on the structural integrity of a project - even in situations when the other materials have failed, during the installation of several thousand square meters of flooring in different climatic conditions all over the world.

What is the MGO Board?

Magnesium Oxide board is a non-insulating mineral board product manufactured in a factory. It's made of a combination of magnesium oxide, magnesium chloride, and water, strengthened with a glass fiber mesh. Unlike plywood or OSB, it doesn't contain any organic solvents or toxins.

We have specified the use of 16mm thick MGO board in our technical configurations. This particular thickness is designed to be the distance between the lower 8# C steel beams. It offers a stiff surface, which helps to get rid of the "bouncing" or "creaking" feeling that is usually associated with cheap temporary site housing.

Key Advantages of K-type House MGO Flooring

Superior Fire Safety

The floor in modular dorms needs to serve as a passive fire suppression component. The MGO flooring at ZN House is categorized as Class A1 Non-Combustible. MGO board serves as a thermal heat shield in contrast to plywood, which feeds a fire. The material provided occupants with crucial egress time while maintaining structural integrity in standardized testing (ASTM E136).

[Note: ZN House's MGO flooring has been tested in accordance with ASTM E136 (U.S. Standard) and EN 13501-1 (European Standard), obtaining a non-combustible classification.]

Resistance to Moisture and Mold

Traditional wood-based floors in modular units tend to rot or swell in humid environments. MGO board does not absorb significant moisture, and thus it is not a source for the growth of mold or mildew. This makes it the perfect choice for modular interiors in tropical or damp, coastal regions where humidity levels are high throughout the year.

High Load-Bearing Capacity

Even though it's relatively light in weight, the 16mm MGO board is very resistant to impacts. It can also very easily take the concentrated weight of heavy bunk beds, lockers, and high-frequency foot traffic of a busy construction site camp or mining dormitory. The 16 mm Magnesian Board has a uniform live load capacity of 2.5 kN/m² and a concentrated dead load capacity of 1.8 kN, which is more than enough to meet AS/NZS 1170.1's requirements for a Residential Category A dormitory.

Table 1: MGO Board vs. Traditional Plywood

[Note: The 16mm thickness was engineered to maintain a deflection ratio over the 8# C-steel spans. This specific thickness optimizes the strength-to-weight ratio, reducing dead load by 12% compared to 18mm alternatives without compromising point-load integrity]

Technical Integration with the K-Type System

The effectiveness of the flooring is determined by how well it is integrated with the hardware. The boards are fastened to the bottom timber (C804015*1.3) with high-strength self-tapping screws. This makes the floor a diaphragm that plays a part in the lateral stability of the whole modular unit.

Table 2: Flooring System Technical Data

[Note: Fastening-ZN House utilize M5.5 high-carbon steel self-tapping screws with a zinc-nickel coating (1,000hr salt spray resistance). Each fastener provides a characteristic pull-out strength of 3.2 kN in the 1.3 mm steel flange.

PVC Finish-The 1.6 mm PVC layer is rated Group T (Highest Wear Resistance) per EN 660-2, ensuring the MGO substrate remains protected against chemical spills common in industrial mining environments.]

Technical Performance Specification

Table 3: Validated Physical Properties (16 mm MGO)

Case Studies: Performance in the Field

Case Study 1: Coastal Infrastructure Camp

• Location: Jakarta, Indonesia
• Lokaci: June 2022

Problem & Solution: Previous projects used plywood that rotted within months as a result of ground moisture. I decided to go for a K-type house MGO flooring system for the whole camp. Over a two-year project period, zero reported failures across the 24-month deployment. Post-monsoon inspections showed a linear expansion of < 0.08%, confirming the MGO board’s dimensional stability in 90% relative humidity.

Testimonial: “The floors, even after a heavy monsoon, were still perfectly level with negligible thickness swell (typically <0.1%) under saturated conditions.”

— Antonio Reyes, Operations Manager at SeaBridge Construction Ltd.

Case Study 2: Remote Mining Dormitory

Location: Queensland, Australia

Lokaci: April 2023

Problem & Solution: The client demanded extreme compliance with local bushfire safety standards. We achieved a non-combustible floor system by using MGO board that not only passed all safety audits but also sheltered the workers' living quarters. The MGO floor system maintained a thermal conductivity (λ) of 0.21 W/(m·K), significantly reducing the HVAC load during the 45° C peak summer temperatures.

Testimonial: “The fire safety rating of the MGO floors made our safety auditors extremely assured, especially in this high-risk area.”

— Sarah Miller, Safety Lead at Terra Resources.

To know more about the K-type container house, visit our product page here.

Conclusion

The floor is the base of the living experience. By choosing K-type house MGO flooring, you not only get safety and moisture resistance but also a structurally long-lasting floor. We at ZN House will not compromise on interior materials. We are aware that the "core" of the house is what really shelters your family.

Frequently Asked Questions

Is the MGO board environmentally friendly?

Yes. MGO board manufacturing is energy-efficient and produces significantly less CO₂ compared to Portland cement and processed timber products.

Can I install different floor finishes on top of the MGO board?

MGO boards are great, it is a simple and cost-effective way to provide a perfectly flat, stable surface for PVC, laminate flooring, or even ceramic tiles, depending on the aesthetic and functional requirements of the project.

Does the MGO board require special maintenance?

When installed with Sealed PVC Finish, MGO Falo provides a 15+ Year Kulawa-free service life (Due ku being resistant to rot ko termite damage). Timber alternatives require treatment approximately every 2 years.

Disclaimer: The technical data and raw materials shown here are references from ZN House's production container only; the specifications, materials, and technical data could be different.

Technical References:

1. International Code Council (ICC) - ES Evaluation Report.

2. Standard Specification for Flat Fiber-Cement Sheets (ASTM C1186).

3. ZN House Internal Durability Report (2022-2024): Performance in Tropical Climates.

4. ASTM C1186-08: Standard Specification for Flat Fiber-Cement Sheets (Grade II).

5. EN 13501-1: Fire classification of construction products and building elements.

6. ZN House Lab Report: 24-month Moisture Absorption and Linear Expansion Analysis in Tropical Climates (Jakarta).

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