Clean Mold Off Outdoor Furniture Fabric

Identifying the Problem

Mold appears as black, green, or gray spots on fabric. Mildew is usually white or gray and powdery. Both thrive in damp, shaded conditions. Address the growth promptly — mold penetrates fabric fibers and becomes harder to remove over time.

Safety First

Wear gloves and a mask when cleaning mold. Work outdoors or in a well-ventilated area. Do not dry-brush mold — this releases spores into the air. Wet the affected area first.

Cleaning Solutions

Vinegar Solution (Mild Cases)

Mix equal parts white vinegar and water in a spray bottle. Spray the moldy areas generously and let sit for 15 minutes. Scrub with a soft-bristle brush. Rinse with clean water and air dry in the sun. Vinegar kills about 82 percent of mold species.

Bleach Solution (Stubborn Cases)

Mix 1 cup of bleach with 1 gallon of water. Test on an inconspicuous area first to check for color fading. Apply with a spray bottle or sponge, let sit for 10 minutes, scrub, and rinse thoroughly. Bleach is effective but can weaken fabric fibers with repeated use.

Commercial Mold Removers

Products specifically designed for outdoor fabric (such as 303 Mold and Mildew Cleaner) are formulated to kill mold without damaging water-resistant coatings. Follow the product instructions exactly.

Prevention

• Ensure cushions dry completely after rain before placing them back on furniture
• Store cushions in a dry location during extended wet periods
• Apply a fabric protectant spray at the start of each season
• Position furniture in areas with good air circulation and sunlight exposure

When to Replace

If mold has penetrated the foam core (not just the fabric cover), the cushion may need replacing. Foam that smells musty after cleaning and drying has internal mold growth that cannot be fully removed.