While it might be tempting to use your stylish indoor cushions on your patio furniture, it's generally not recommended for long-term use. The primary reason lies in the materials. Outdoor cushions are specifically engineered with durable, weather-resistant fabrics like solution-dyed acrylic or polyester. These fabrics are designed to withstand harsh UV rays, preventing fading, and are often coated to be water-repellent or quick-drying, which inhibits mold and mildew growth. The fill is also different, typically being a quick-dry foam that won't hold moisture.
Indoor cushions, on the other hand, are made from materials like cotton, linen, or standard polyester that are not designed for the elements. When exposed to sun and rain, they will fade quickly, absorb water and become heavy, and are highly susceptible to mold and mildew, leading to a musty smell and potential damage to your furniture frame. For short-term use on a covered, dry porch, indoor cushions might be acceptable. However, for any furniture exposed to sun or rain, investing in purpose-built outdoor cushions is crucial for longevity, comfort, and hygiene. To protect your investment, always choose cushions made for outdoor use and consider storing them or using covers during harsh weather or off-seasons.