The Difference Between Integrated Houses and Prefabricated Houses

There are significant differences between integrated houses and prefabricated houses in terms of their essential purposes, construction methods, material sustainability, functional adaptability, and development trends:

1. Essence and Purpose Integrated houses are based on modular technology, emphasizing "mobility and disassembly" to separate property from land. They are suitable for short-term or mobile scenarios (such as construction site dormitories, post-disaster resettlement, and tourist homestays). Prefabricated houses are a form of traditional industrialized construction. Due to issues such as insufficient earthquake resistance and material aging, they are mostly transformed into transitional resettlement housing and gradually phased out of the mainstream market.

2. Construction Methods and Technical Characteristics

• Production Methods: Prefabricated houses produce single components (such as cement boards) in factories and assemble them on-site for fixation. Integrated houses, on the other hand, modularly produce complete units (such as walls and roofs) or prefabricate subsystems before assembling them on-site, with a higher proportion of on-site construction.
• Construction Periods: Prefabricated houses require on-site pouring and reinforcement, with construction periods lasting several months. Integrated houses have no wet operations on-site. Light steel houses can be occupied within 1-2 months, and the main structure of modular houses can be formed within one to two weeks.
• Structural Designs: Prefabricated houses rely on the quality of on-site construction and have poor earthquake resistance. Integrated houses use flexible light steel connections, with wind and earthquake resistance capabilities reaching above magnitude 12, and stronger adaptability to foundations.

3. Materials and Sustainability

• Material Selection: Prefabricated houses mainly use cement and steel, with non-recyclable materials. Integrated houses have a high proportion of light steel and composite panels, with over 90% of materials being recyclable.
• Environmental Impacts: Prefabricated houses have high production energy consumption and large carbon emissions. Integrated houses are produced in closed factories, reducing pollution and generating over 90% less construction waste, aligning with green building concepts.

4. Functionality and Adaptability

• Mobility: Prefabricated houses are fixed to foundations, generating waste upon demolition. Integrated houses support overall relocation without damaging the land.
• Functional Expansion: Prefabricated houses are difficult to renovate a second time. Integrated houses can adjust space by adding or removing modules, but flexibility varies by technical type (e.g., modular houses are more flexible, while system-integrated houses require additional construction).
• Long-term Maintenance: Prefabricated houses are prone to leakage and cracking, with high maintenance costs. Integrated houses use corrosion-resistant materials, resulting in lower long-term maintenance costs.

5. Development Trends and Policy Orientations Prefabricated houses are restricted by policies in many places due to safety hazards and are gradually being demolished or renovated. Integrated houses are supported by the "14th Five-Year Plan" policies for prefabricated buildings and are developing towards intelligence and longevity, with broad market prospects.