Using a regular indoor rug under your urban outdoor furniture might seem like a quick styling fix, but it's generally not advisable. Indoor rugs are not designed to withstand the elements. Moisture from rain or morning dew will lead to mold, mildew, and rapid deterioration. The materials, like natural fibers or delicate synthetics, will fade under UV rays and can become a slipping hazard when wet.
For a durable and stylish outdoor space, opt for rugs specifically labeled for outdoor use. These are made from polypropylene, polyester, or synthetic bamboo, which are mold-resistant, quick-drying, and UV-stable. They are easier to clean and anchor your furniture grouping beautifully.
If you must use an indoor rug temporarily, ensure it's in a fully covered, dry area like a screened porch. However, for longevity and safety, investing in a proper outdoor rug is the best choice to enhance your patio, balcony, or deck setup.