Advantages and Disadvantages of Prefabricated Wooden Houses

The advantages of prefabricated wooden houses include cost and time savings, reduced material waste, good seismic performance, environmental friendliness, long service life, and improved sound and thermal insulation. The disadvantages include poor sound insulation, increased maintenance costs in the later stages, poor seismic performance in some structures, potential impact on living comfort, easy cracking and leakage at joints, and limited house type renovation. However, some of these disadvantages may not fully apply to prefabricated wooden houses.

Advantages

• Cost and time savings: The factory production model reduces material waste by about 30% during the construction of prefabricated wooden houses, and the construction period can be shortened by 50% to 70%. Mass production also reduces material costs by 20% to 40% and labor costs by about 60%, effectively reducing construction and time costs.
• Good seismic performance: Prefabricated components are produced using high-precision molds for standardization, improving concrete strength compared to traditional construction. Some new prefabricated houses have passed seismic simulation tests for magnitude 7 earthquakes, and improvements can even elevate the standard to magnitude 8. Although not explicitly mentioned for prefabricated wooden houses, it is reasonable to infer that they also have certain seismic advantages.
• Environmental friendliness: The use of recyclable materials reduces construction waste by 8%, and the material recycling rate can reach over 90%, aligning with environmental protection concepts and having a relatively small impact on the environment.
• Long service life: The design life is generally 30 to 40 years, and the service life of new prefabricated houses has been extended to 70 years. Prefabricated wooden houses can also have a long service life with proper maintenance.
• Improved sound and thermal insulation: The use of sandwich insulation design improves sound and thermal insulation, enhancing living comfort to a certain extent.

Disadvantages

• Poor sound insulation: Some prefabricated houses have poor sound insulation, with a difference of 20 decibels, making it easy to hear noises from upstairs. Prefabricated wooden houses may also have similar sound insulation issues.
• Increased maintenance costs in the later stages: After 20 years, annual maintenance costs increase by 1,500 to 3,000 yuan. Prefabricated wooden houses may also face rising maintenance costs as they age.
• Poor seismic performance in some structures: Some prefabricated houses are assembled with cement boards, resulting in poor seismic performance and potential collapse during earthquakes. Prefabricated wooden houses may also have seismic hazards if their structural design is unreasonable.
• Potential impact on living comfort: There are situations where living in them feels like a steamer in summer and an ice cellar in winter, and sneezes from next door can be heard clearly. If the sound and thermal insulation of prefabricated wooden houses are not well handled, it will also affect the living experience.
• Easy cracking and leakage at joints: Joints are particularly prone to cracking and leakage problems. Prefabricated wooden houses may also experience similar issues at connection points if construction is improper.
• Limited house type renovation: Load-bearing walls cannot be moved, making it difficult to renovate the house type. Prefabricated wooden houses may also be limited in house type renovation due to their structural characteristics.