Finished Testing

Quality inspection is an important step before container houses are delivered. Since the units need to go through production, transportation, lifting, and on-site installation, every key part should be carefully checked, including the steel structure, welding points, waterproof performance, electrical system, doors, windows, wall connections, and interior fittings.

On-Site Inspection Checkpoints for Prefab Houses

To ensure every prefab container house is safe, durable, and ready for delivery, our on-site quality inspection covers all key construction stages, from structural leveling to interior finishing and final testing.

✓ Container frame leveling check
✓ Floor rock wool insulation installation check
✓ Cement fiberboard flooring installation check
✓ Container base keel positioning check
✓ Wall keel installation inspection
✓ Ceiling and floor keel installation check
✓ Concealed conduit and junction box inspection
✓ Hidden water supply and drainage pipe inspection
✓ Ceiling and wall reinforcement plate check
✓ Rock wool installation for ceilings and walls
✓ Base board installation for ceilings and walls
✓ Galvanized steel sheet and breathable membrane inspection
✓ Curtain wall keel installation for exposed container surfaces

✓ Self-leveling floor construction inspection
✓ 24-hour bathroom water retention test
✓ Bathroom tile installation inspection
✓ Interior wall panels and skirting board installation check
✓ Interior and exterior paint finish inspection
✓ SPC flooring installation inspection
✓ Wardrobe and cabinet installation check
✓ Aluminum window and glass door installation inspection
✓ Entry doors, room doors, bathroom doors, and threshold stone inspection
✓ Lighting fixtures, sanitary ware, mirrors, air conditioners, and hardware fittings check
✓ Power and low-voltage electrical system testing
✓ Final full inspection before shipment

Ensuring Container House Safety & Compliance with Laboratory Testing

We can arrange third-party laboratory testing to verify that our prefab container houses meet relevant international safety, structural, and performance requirements:

✓ AS/NZS 1170 — Structural design load requirements
✓ CE Marking — European construction product conformity
✓ RoHS — Restricted hazardous substances compliance
✓ REACH — Chemical safety and material compliance

✓ ASTM E1602 — Structural performance testing
✓ ISO 1496-1 — General cargo container specification standard
✓ IBC — International Building Code compliance
✓ NFPA 5000 — Building construction and safety standard

Typical Issues Found During Modular House Inspection

Weatherproofing & Insulation

  • Water leakage around windows, doors, or roof joints

  • Insulation missing, uneven, or poorly installed

  • Gaps between wall panels or floor panels causing air drafts

  • Poor sealing around doors and windows

  • Moisture or condensation inside the unit

Interior Finish & Usability

  • Uneven, scratched, or damaged flooring

  • Fixtures installed loosely or incorrectly

  • Electrical outlets or lights not working properly

  • Scratches, dents, or rough paint finish on interior surfaces

  • Doors or windows that do not open and close smoothly

Structural Strength & Stability

  • Bent or damaged steel frames

  • Uneven or inconsistent welding quality

  • Rust or corrosion on metal parts

  • Wall or roof panels not properly aligned

  • Weak or unstable support points

Safety & Compliance

  • Electrical wiring or components that do not meet standards

  • Poor ventilation inside the unit

  • Electrical load not matching the wiring design

  • Sharp edges or exposed parts that may cause safety risks

  • Use of unsafe or uncertified building materials

Exterior Finish & Durability

  • Uneven paint color or poor coating quality

  • Damaged exterior wall cladding

  • Poor drainage around the base structure

  • Missing or loose exterior trim parts

  • Visible repair marks or previous modifications

Drawing Consistency Check

  • Electrical layout does not match the design drawings

  • Plumbing layout does not match the design drawings

  • Doors, windows, and fittings are different from the approved drawings

Fuhuilai helps identify and resolve potential issues before shipment

Fuhuilai provides quality control throughout the entire container house production process, from sample checks and production monitoring to pre-shipment inspection and container loading supervision. This helps ensure every unit meets strict quality and safety requirements before leaving the factory.