What are the disadvantages of curtain walls?

There are also several disadvantages to using curtain walls in building construction, including:

1. 1. Cost: Curtain walls can be more expensive to install and maintain compared to other types of building envelopes, such as masonry or concrete walls.
   2. Weight: Curtain walls can be relatively heavy, which may require additional structural support and increase construction costs.
   3. Leaks: Curtain walls can be prone to leaks if not properly installed or maintained, which can lead to water damage and other issues.
   4. Thermal performance: Curtain walls may not provide as much insulation as other types of building envelopes, which can result in higher heating and cooling costs.
   5. Aesthetics: Some people may not like the appearance of curtain walls, as they can be perceived as cold and impersonal.
   6. Complexity: Curtain walls can be complex systems that require specialized knowledge and skills to install and maintain.
   7. Maintenance: Curtain walls may require more frequent maintenance and cleaning compared to other types of building envelopes.