Back to blog
Article

How to Install Underfloor Heating in Container Houses

Admin September 17, 2026

Installing underfloor heating in container houses requires targeted design modifications based on the characteristics of steel, with core steps including basic insulation treatment, laying reflective film, installing click-lock flooring, and system testing, while also paying attention to the selection of electric heating modes and energy consumption optimization.

1. Basic Insulation Treatment

The steel body of container houses has strong thermal conductivity. Without insulation treatment, heat can easily dissipate through the floor into the ground, increasing energy consumption and potentially causing steel corrosion. Therefore, it is necessary to lay 2-3 cm thick graphene XPS extruded insulation boards on the ground base. This material has a temperature resistance range of -20°C to 75°C, effectively locking in heat, reducing energy consumption, and isolating ground moisture to prevent steel aging and rusting due to prolonged exposure to moisture. The insulation boards should be laid flat and seamless, ensuring coverage of the entire floor area to provide a stable foundation for subsequent steps.

2. Laying Reflective Film

Lay acrylic reflective film on top of the insulation boards. Its function is to reflect the infrared rays generated by the underfloor heating, reducing heat loss downward and further improving heating efficiency. The reflective film should be tightly adhered to the insulation boards, with the edges fixed using special tape to prevent displacement or wrinkling due to thermal expansion and contraction, which could affect the reflective effect.

3. Installing Click-Lock Flooring

After laying the reflective film, install click-lock flooring on top of it. The interlocking method of click-lock flooring forms a continuous heat-reflective surface, concentrating heat reflection into the indoor space. At the same time, its structural stability can withstand the long-term operation of the underfloor heating system. When selecting flooring, pay attention to the thermal conductivity of the material, prioritizing composite or solid wood flooring with high thermal conductivity coefficients, and avoiding materials with poor thermal conductivity (such as thick carpets) to prevent reduced heating effects.

4. System Testing and Selection of Electric Heating Modes

After laying the underfloor heating, conduct professional pressure testing to check for leaks in the pipes or heating elements, ensuring safe system operation. Underfloor heating in container houses typically uses electric heating modes, which can save about 30% more energy compared to traditional boiler-based underfloor heating. When combined with comprehensive insulation layer design, overall energy consumption can even be lower than that of traditional air conditioners. Additionally, the service life of electric heating systems can exceed 50 years, with low maintenance costs, making them suitable for long-term use scenarios.

Precautions

The design of underfloor heating in container houses should fully consider the thermal conductivity characteristics of steel, reducing heat loss through multi-layer insulation and reflective structures. At the same time, the electric heating mode should match the electrical load of the house to avoid circuit failures due to excessive power. During daily use, it is recommended to regularly check the integrity of the insulation layer and reflective film to ensure long-term efficient operation of the system.