Waterproofness of Container Houses

The waterproofness of container houses depends on their production process, material quality, and construction details. High-quality container houses can achieve good waterproof performance through professional design and treatment, but poor-quality products or improper construction can still lead to water leakage. Here is a detailed analysis:

I. Factors Ensuring Waterproof Performance

1. Optimized Structural Design
   Modern container houses often adopt an integrated top-and-bottom welding structure (such as packing-box units). With built-in drainage system design, accumulated water can be effectively discharged through gutters, preventing leakage. For example, the packing-box units manufactured by Nanjing Changyou Zhizao solve the leakage problem of traditional assembled containers through top-and-bottom welding and built-in drainage systems.
2. Multi-Layer Waterproof Construction
   The roofs and walls of high-quality container houses use a multi-layer composite design of materials. For example, the roof consists of iron sheets, glass wool, moisture-proof membranes, and ceiling tiles, with structural adhesive used to seal the joints. The walls adopt high-density thermal insulation rock wool and thermal-break insulation technology, and the doors and windows are made of thermal-break aluminum double-glazed glass, providing both thermal insulation and waterproofing.
3. Control of Construction Techniques
   The key to waterproof performance lies in construction details. For example, the joints of the roof iron sheets need to be sealed with structural adhesive, and the moisture-proof membranes need to be firmly attached. When opening holes in the movable house panels to install fans, waterproof treatment of the surrounding cracks is required. The gutters need to be designed with a reasonable slope to avoid water accumulation.

II. Common Causes of Water Leakage

1. Material and Construction Defects
   • Unqualified waterproof materials or improper construction, such as poorly applied structural adhesive or improperly attached moisture-proof membranes.
   • Aging of the waterproof gaskets of fasteners, leading to loosening and water leakage.
2. External Factors
   • Deformation of the house panels (such as cracks expanding at the joints due to wind loads, snow loads, and thermal expansion and contraction).
   • Unreasonable gutter design (such as no slope or clogged outlets) or inadequate anti-corrosion treatment leading to rust and erosion.
3. Improper Use
   • Treading on the roof causing loosening of fasteners.
   • Damage to the original waterproof layer during later renovations (such as randomly opening holes to install equipment).

III. Suggestions for Improving Waterproofness

1. Choose High-Quality Products
   Give priority to container houses with an integrated welding structure and multi-layer waterproof construction, and confirm that they have passed water spray tests to verify their waterproof performance.
2. Strict Construction Supervision
   Ensure that the construction team operates in accordance with regulations, and supervise key links such as joint sealing and drainage system installation on site.
3. Regular Maintenance and Inspection
   Regularly inspect the roof, wall joints, fasteners, and other parts, replace aging materials in a timely manner, and clean debris from the gutters.