The answer to whether you can leave urban outdoor furniture outside all year isn't a simple yes or no. It primarily depends on the material and your local climate. High-quality all-weather materials like powder-coated aluminum, teak, and certain synthetic rattans are designed for year-round exposure, especially in milder winters. However, even durable materials benefit from protection. For harsh winters with heavy snow, ice, and salt, storing furniture is the safest choice to prevent damage.
For permanent placement, use high-quality, fitted furniture covers that are breathable and waterproof. Elevate furniture off wet surfaces to prevent rust and mildew. Clean furniture thoroughly before winter to remove debris that can cause stains or corrosion. Consider the micro-climate of your urban space; balconies may offer some shelter, while rooftop decks face full exposure.
Ultimately, check the manufacturer's warranty and care instructions. With proper precautions, you can minimize winter wear, but storing cushions and less resilient pieces will always extend their lifespan and keep your urban oasis looking its best.