Fire Resistance Performance of Prefabricated Houses

The overall fire resistance performance of prefabricated houses is excellent, meeting stringent building fire safety requirements, as demonstrated in the following aspects:

1. Material Properties Provide Basic Fire Protection
The core materials of prefabricated houses are primarily cement, which is a non-combustible material that does not easily burn or release toxic gases under high temperatures, effectively delaying the spread of fire. For example, when simply supported prefabricated floor slabs are 70mm thick with a 10mm protective layer, their fire resistance rating can reach 1.4 hours; when wall panels are 120mm thick, the fire resistance rating increases to 1.4 to 2.5 hours. These data indicate that prefabricated components inherently possess high fire resistance capabilities, providing fundamental protection for structural safety during fires.

2. Design Optimization Reduces Fire Propagation Risks
Prefabricated houses adopt standardized designs, with component connections meticulously processed to minimize fire propagation paths caused by gaps or splicing defects. Some products have passed CE international certification, achieving a fire rating of Class A (non-combustible material grade), complying with the most stringent overseas building fire safety regulations. For instance, modular buildings have developed fire-blocking technologies for module installation gaps, ensuring overall fire resistance performance meets standards and further reducing the likelihood of fire spreading through structural gaps.

3. Technological Improvements Enhance Overall Fire Ratings
In terms of technical treatments at critical locations, prefabricated houses use fire-resistant sealing materials (e.g., at component connections) to prevent flame and smoke penetration, while selecting high-performance insulation materials like rock wool or glass wool instead of traditional flammable materials, significantly improving overall fire resistance. For example, wall panels adopt a sandwich composite insulation structure with embedded non-combustible materials like rock wool, meeting both insulation and fire protection needs, forming a multi-layered defense system.

4. Practical Testing Verifies Structural Integrity
According to actual fire tests, prefabricated houses maintain structural integrity for extended periods under standard fire conditions. For example, under high-temperature exposure, prefabricated floor slabs and wall panels can sustain load-bearing capacity for over 1 hour, buying critical time for personnel evacuation and firefighting efforts. This characteristic makes them highly advantageous in public buildings, temporary housing, and other scenarios.

5. International Certifications and Standards Ensure Global Applicability
Several domestically produced prefabricated houses have passed EU CE certification, achieving international Class A fire resistance standards and meeting building regulations in multiple countries worldwide. This means their fire protection designs not only comply with domestic norms but also adapt to stringent standards in different regions, providing reliable technical endorsements for exports and international projects.