That's an excellent and often overlooked question! The short answer is yes, there can be significant noise considerations with metal park benches, but they are manageable with proper design and installation. Unlike wood or composite materials, metal is highly conductive to sound and vibration.
The primary culprit is the metal-on-metal contact at connection points, like where the seat slats meet the frame or where legs are bolted together. Over time, fasteners can loosen slightly, creating tiny gaps that cause audible creaking, groaning, or rattling when someone sits down or shifts their weight. Temperature changes also cause metal to expand and contract, which can exacerbate these noises. Furthermore, a bench placed on an uneven surface may rock slightly, producing a repetitive tapping or scraping sound.
However, this doesn't mean you must avoid metal benches. Many modern designs proactively address these issues. Look for benches with integrated rubber or nylon bushings or gaskets at all connection points. These act as dampeners, absorbing vibration and preventing direct metal contact. Powder-coated finishes, while primarily for weather resistance, can also add a slight cushioning layer compared to bare metal. Proper installation is crucial; anchoring the bench securely to a level, stable foundation prevents movement and rocking noises.
For existing noisy benches, maintenance is key. Tightening loose bolts and applying a non-permanent thread-locking compound can help. Inserting small rubber washers at joints can be a simple, effective retrofit.
In summary, while traditional metal benches have the potential to be noisy, contemporary designs and mindful installation focus on acoustic dampening to ensure they provide quiet, peaceful seating. The key is specifying benches with noise-reduction features and ensuring they are installed correctly on a stable base.