Waterproofing at Joints of Container Houses

Waterproofing at the joints of container houses requires focused attention on material selection, process handling, and routine maintenance. Key measures include using qualified waterproof materials, standardizing joint sealing processes, designing reasonable drainage slopes, and regularly inspecting and replacing sealing components.

1. Waterproof Material Selection and Construction Specifications
The waterproofing effectiveness at container joints directly depends on material quality and construction techniques. It is essential to choose weather-resistant and aging-resistant waterproof materials, such as SBS modified bitumen waterproof membranes or polyurethane sealants, avoiding the use of inferior adhesives or non-specialized sealing materials. During construction, ensure that the joint seams are clean and dry. The waterproof membrane should be fully laid without breaks, and the sealant should be fully filled to form a continuous sealing layer. For example, in the waterproofing treatment of container space capsule shops, standard processes employ double protection with waterproof membranes + full sealant sealing to ensure no leakage risks at the joints.

2. Joint Process and Structural Design Optimization
Waterproofing at the joints should be designed in conjunction with structural stability. Bolt-connected assembled container bodies, with multiple nodes, require thorough inspection of the tightness of each connection point to prevent the waterproof layer from cracking due to loosening. Roofs, gutters, and other areas prone to water accumulation should be designed with reasonable drainage slopes (usually not less than 2%) to ensure rapid water drainage. For example, the design of container villa courtyards explicitly requires horizontal slopes in gutters and regular cleaning of outlets to prevent blockages from debris, which could lead to backflow and leakage.

3. Specialized Treatment for Key Areas
Areas around windows and doors, container body joints, and roof joints are high-risk zones for water leakage, requiring targeted measures:

• Window and Door Sealing: Use elastic sealants to fill gaps and install waterproof barriers;
• Roof Joints: Overlap panels in the direction of water flow, lay waterproof membranes at joints, and secure them;
• Gutter Systems: Ensure adequate anti-corrosion treatment, design outlets according to drainage capacity requirements, and prevent water accumulation and corrosion.
  For example, in southern regions with heavy rainfall, it is necessary to strengthen the waterproofing process at roof corners to prevent cracks from expanding due to thermal expansion and contraction.

4. Regular Maintenance and Component Replacement
Waterproof sealants require regular replacement due to aging (typically every 5-7 years), along with annual cleaning of roof debris and inspection of fasteners for looseness. If sealant cracking or steel plate corrosion is detected, timely repairs or component replacements are necessary to prevent minor issues from escalating into severe leakage.