Your question is a common concern for city dwellers. The short answer is: it can be a bad idea, but it doesn't have to be. The suitability of lightweight furniture on a windy, high-floor terrace depends on several critical factors.
First, consider the furniture's design and weight. Truly lightweight, all-weather resin chairs or small side tables are highly susceptible to being tipped over or even becoming airborne in strong gusts, creating a safety hazard. However, many pieces marketed as "lightweight" are still substantial enough to resist moderate winds.
The real key is secure anchoring. Look for furniture with options for weighting or tying down. You can use sandbag anchors, tie-down straps, or even discreet bungee cords to secure chairs and tables to sturdy railings or built-in hooks. Placing heavier planters on the base of a cantilever umbrella stand is another effective tactic.
Material choice is also crucial. Opt for perforated or slatted designs that allow wind to pass through, rather than solid panels that act like sails. Aluminum and powder-coated steel frames offer a good balance of manageable weight and stability.
In conclusion, lightweight urban furniture requires proactive management on a windy terrace. By selecting wind-permeable designs, implementing a reliable anchoring system, and being diligent about storing or securing items when severe weather is forecast, you can safely enjoy a stylish and comfortable outdoor oasis high above the city.