How to Seal Container Houses

The sealing of container houses requires efficient sealing through joint seam treatment, overall sealing enhancement, structural material optimization, and detail refinement. The specific methods are as follows:

1. Waterproof Treatment of Joint Seams

Joint seams are the core aspect of sealing and require step-by-step measures to ensure tightness:

1. Clean the joint surfaces: Thoroughly remove oil, dust, and rust to ensure the joint surfaces are flat and free of impurities, providing a good foundation for the adhesion of sealing materials.
2. Insert sealing strips: Use weather-resistant strips such as EPDM or neoprene, inserted into the joint seams to adapt to temperature changes and UV exposure, preventing seam cracking due to material shrinkage.
3. Apply waterproof sealing materials:
   • Silicone sealant: Suitable for general environments, applied to a thickness of 2-3 mm to ensure a continuous, full, and bubble-free layer, forming a flexible waterproof barrier.
   • Polyurethane sealant: Used in high-humidity or extreme climate areas, offering superior adhesion and aging resistance.
4. Install metal waterstops: For high-stress joint seams (e.g., at the junction of the roof and walls), use stainless steel or galvanized steel waterstops, fixed by welding or bolts, to enhance waterproofing and prevent leakage due to structural deformation over long-term use.

2. Enhance Overall Sealing

1. Optimize drainage design: Set a drainage slope of ≥2% on the roof and walls, install drainage channels and guide plates to quickly remove accumulated water, reducing hydrostatic pressure damage to the sealing.
2. Regularly maintain sealing components: Inspect the condition of sealants and waterstops every six months, and every quarter in extreme climate areas, promptly replacing aged or damaged components to extend service life.
3. Test and accept: After completing the sealing treatment, conduct a 30-minute water spray test, focusing on joint seams, door and window frames, and other areas to ensure no leakage.

3. Structural and Material Selection

1. Panel joint method: Use interlocking or embedded structures, combined with sealing strips to form a continuous waterproof and moisture-proof layer, avoiding the seam vulnerabilities of traditional flat joints.
2. Insulation material: Select materials such as polyurethane, rock wool, or glass wool, which have low thermal conductivity and high closed-cell rates to effectively block moisture penetration while improving thermal insulation.
3. Welding process: Prefer fully welded structures over bolted connections to ensure uniform and defect-free welds, preventing moisture infiltration through connections.

4. Detail Refinement

1. Connection between door/window frames and walls: Use dedicated seals or waterproof tapes to cover the gaps between the frames and walls, preventing air and water leakage.
2. Pipe penetration holes: For wire and water pipe penetrations, use expanding foam or sealant to fill the gaps between the holes and pipes, ensuring no seams and preventing leakage channels.

Through these comprehensive measures, container houses can achieve efficient sealing, significantly improving tightness, moisture resistance, and durability, adapting to long-term use in various climate environments.