Why is cast iron outdoor seating rarely used in rooftop installations?

Cast iron outdoor seating is a classic choice for gardens and patios, but it’s rarely seen in rooftop installations. The primary reason is its excessive weight, which can strain rooftop structures and require additional reinforcement. Transporting heavy cast iron furniture to elevated spaces is also logistically challenging and costly.

Additionally, cast iron is prone to rust when exposed to rain and humidity, requiring frequent maintenance like sealing or painting—a hassle for rooftop settings. Unlike lighter materials such as aluminum or synthetic wicker, cast iron lacks weather resistance and may deteriorate faster in harsh rooftop conditions.

Lastly, modern rooftop designs often prioritize sleek, lightweight furniture for easy rearrangement and aesthetic flexibility, making cast iron an impractical choice. For these reasons, homeowners and designers typically opt for alternative materials in rooftop installations.