Disadvantages of Prefabricated Steel Structure Houses

The disadvantages of prefabricated steel structure houses are mainly reflected in aspects such as fire resistance, corrosion resistance, sound insulation and waterproofing, cost, and compatibility. Details are as follows:

1. Poor fire resistance
Steel structures are prone to losing strength under high temperatures. Steel has high thermal conductivity, and fires spread rapidly, requiring additional fire protection measures (such as applying fire-resistant coatings or wrapping with fire-resistant boards). Without protective measures, they may rapidly deform or even collapse in a fire, posing a threat to personnel safety. Additionally, fire protection treatments increase construction complexity and costs and require regular maintenance to ensure effectiveness.

2. Susceptibility to corrosion
Steel is prone to rusting in humid or corrosive environments (such as coastal areas and near chemical plants). Long-term exposure weakens structural strength and shortens service life. Although measures like galvanizing and applying anti-corrosion paint can mitigate this, regular inspections and touch-ups are necessary, leading to high maintenance costs. Improper maintenance may lead to safety hazards due to rusting.

3. Sound insulation and water leakage issues
If professional soundproofing materials are not used for the walls and roofs of steel structure residences, they are susceptible to interference from external noise (such as traffic and equipment sounds). At the same time, if the joints are not tightly sealed, water leakage may occur due to thermal expansion and contraction or construction defects, requiring special treatments like waterproof membranes and sealants, which increase construction difficulty and costs.

4. High costs

• Material and construction costs: Steel prices fluctuate significantly, and professional teams and equipment are required for installation, resulting in overall costs higher than those of traditional concrete buildings.
• Maintenance costs: Steel structures require regular inspections for rusting, the integrity of fire protection layers, and connection joints, leading to high long-term maintenance expenses.
• Supporting technology costs: Light steel structures rely on new types of walls (such as lightweight partition boards) and supporting technologies (such as insulation and pipeline pre-embedding). The research and application costs are high, further driving up the total price.

5. Compatibility issues with traditional building systems

• Product mismatch: Supporting products for steel structures (such as doors, windows, and pipeline systems) on the market are still imperfect, and their interface standards with traditional building systems (such as brick-concrete and frame structures) are not unified, resulting in reduced construction efficiency.
• Insufficient technology and training: Steel structure construction requires professional skills in welding and bolt connections, as well as familiarity with new technologies like 3D modeling and modular installation. Currently, there is a shortage of professionals, and the training system lags behind, limiting the speed of its popularization.

In conclusion, prefabricated steel structure houses face challenges in terms of performance, cost, and promotion, which need to be gradually optimized through technological innovation, standard improvement, and skills training.