### What is the disadvantage of sandwich panel wall?
**Answer:**.
The disadvantage of sandwich panel walls is that they have lower fire resistance compared to traditional brick or concrete walls. Sandwich panels are typically made of materials like polystyrene, polyurethane, or rock wool, which are flammable and can catch fire easily. In the event of a fire, these panels can contribute to the rapid spread of flames throughout a building.
Additionally, sandwich panel walls may also be more prone to damage from impact or pressure, as the outer layers are often relatively thin and may not provide as much structural support as solid walls. This can result in the need for more frequent repairs and maintenance to keep the panels in good condition.
Furthermore, sandwich panel walls may not offer as much insulation or soundproofing capability as other wall materials, which can lead to higher energy costs and decreased comfort levels inside buildings. In colder climates, the lack of insulation provided by sandwich panels can result in heat loss and lower energy efficiency.
Overall, while sandwich panel walls offer benefits such as lightweight construction and easy installation, their lower fire resistance, susceptibility to damage, and reduced insulation properties are important factors to consider when choosing wall materials for a building.
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