The frame is the backbone of any outdoor sofa, determining its durability, weight, and style. Common high-quality materials include:
Aluminum: Lightweight, rust-proof, and often used in modern designs. It's durable and requires minimal maintenance.
Powder-Coated Steel: Extremely strong and sturdy. The powder coating provides a protective layer against rust and corrosion.
Teak Wood: A premium, naturally weather-resistant hardwood that offers a classic look and exceptional longevity.
Synthetic Wicker/Rattan: Typically woven over an aluminum frame, providing the aesthetic of natural wicker with superior all-weather resilience.
The best choice depends on your climate, desired maintenance level, and aesthetic preference for your outdoor living space.