Internal Insulation of Container Houses

Internal insulation of container houses can be achieved through methods such as embedding insulation materials, polyurethane spraying, and installing underfloor heating. Details are as follows:

1. Embedding insulation materials in walls and applying double-layer gypsum boards Embedding insulation materials inside the walls of container houses is a fundamental and common insulation method. Commonly used insulation materials include rock wool, glass wool, expanded polystyrene (EPS) boards, or extruded polystyrene (XPS) boards. These materials have low thermal conductivity and can effectively block heat transfer. After embedding the insulation materials, double-layer gypsum boards are used to cover the wall surfaces. Double-layer gypsum boards not only secure the insulation materials but also further enhance thermal insulation through their internal air layers, while providing a flat wall surface for subsequent decoration. Additionally, gypsum boards have inherent fire-resistant properties, enhancing the safety of the house.

2. Using polyurethane insulation technology Polyurethane insulation technology involves using a high-pressure sprayer to directly spray polyurethane foam onto the surfaces of container bodies (including walls, roofs, and floors), forming a continuous thermal insulation layer. Polyurethane foam has extremely low thermal conductivity (approximately 0.022-0.028 W/(m·K)), significantly reducing heat transfer through the container body. It offers fast construction speed and short cycle times, and after spraying, it forms a seamless structure, avoiding thermal bridge effects at the joints of traditional insulation materials. Furthermore, polyurethane foam has certain adhesive and waterproof properties, enhancing the overall structural strength of the container and preventing moisture penetration, making it suitable for insulation needs of container houses in various climatic conditions.

3. Installing underfloor heating to enhance insulation effects (suitable for cold regions) In cold regions such as Harbin, relying solely on wall and roof insulation may not be sufficient to meet indoor temperature requirements. In such cases, installing an underfloor heating system can be combined. Underfloor heating supplies heat to the room through radiation by laying hot water pipes or electric heating films beneath the floor, effectively raising indoor temperatures and reducing heat loss. The underfloor heating system can work in conjunction with wall insulation materials to form a three-dimensional insulation system from the bottom up, particularly suitable for regions with long winters and extremely low temperatures. When installing underfloor heating, attention should be paid to setting up floor insulation layers (such as laying extruded polystyrene boards) to prevent heat loss to the ground and further improve energy efficiency.