WHAT IS THE DIFFERENCE BETWEEN COMMON ALUMINIUM WINDOWS AND CURTAIN WALLS

Aluminum windows and curtain walls are both building envelope systems, but they have big differences in structure, load and application.

Load transfer Normal aluminum windows are installed inside pre-opened wall openings. The building wall bears the weight and wind load. Curtain wall is hung outside the main building structure. It acts as exterior skin, transferring wind load back to building frame, and does not carry floor weight.

Size & application Aluminum windows are individual units with limited size for residential and small commercial openings. Curtain wall forms continuous full exterior facade for multi-story buildings, hotels and office towers.

Profile specification Curtain wall profiles have thicker wall thickness and larger cross-section for higher structural safety, leading to higher cost.

Summary: Windows fit into wall holes. Curtain wall replaces the exterior wall cladding.

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