Mildew on outdoor cushions can be frustrating, but with the right techniques and products, it can be removed. Here is a comprehensive guide on how to effectively clean mildew off outdoor cushions.
What Causes Mildew on Outdoor Cushions?
Mildew grows on outdoor cushions when moisture gets trapped in the fabric. Common causes include:
- High humidity levels
- Rain getting cushions wet
- Cushions not drying fully between uses
- Storage in damp, dark areas like garages or porches
Mildew thrives in warm, moist environments. Outdoor cushions provide the perfect place for mildew spores to grow when exposed to these conditions.
Removing Mildew from Outdoor Cushions
Cleaning mildew from outdoor cushions takes a bit of effort, but is doable with the right approach. Here are the steps:
Prepare the Cleaning Solution
Make a cleaning solution of 1 cup of bleach mixed with 1 gallon of warm water. This dilution is strong enough to kill mildew but won’t damage the fabric.
Alternatively, use an oxygen bleach powder like OxiClean instead of regular chlorine bleach if you want a non-toxic solution.
Brush Off Surface Mildew
Use a stiff scrub brush to brush off any mildew on the surface before soaking the cushions. This will prevent the spores from spreading further.
Soak the Cushions
Submerge the cushions in the cleaning solution. For large/thick cushions, sponge the solution generously over all areas.
Let them soak for at least 15 minutes up to a few hours so the bleach can penetrate the fibers.
Rinse Thoroughly
Rinse the cushions very well with a hose or in the tub/bucket to remove all the bleach. This step is important to prevent damage.
Allow to Dry
Squeeze excess water out and let the cushions air dry completely in the sun before using or storing. The sunlight helps kill any remaining mildew spores.
Repeat as Needed
Check cushions periodically and re-clean any areas that show new mildew growth. Ongoing prevention is key.
Tips for Preventing Mildew on Outdoor Cushions
Prevention is the best way to deal with mildew on outdoor cushions. Here are some helpful tips:
- Allow cushions to dry completely between uses and before storing
- Store cushions in a dry, well-ventilated area indoors when not in use
- Use fabric covers to protect cushions from rain
- Spray cushions periodically with an anti-mildew treatment
- Wash removable cushion covers regularly
- Replace damaged cushions that are prone to retaining moisture
- Discard cushions with stubborn, recurring mildew problems
Following these preventive measures will help keep outdoor cushions fresh and mold-free all season long.
Common Questions about Cleaning Mildew Off Outdoor Cushions
Can I use vinegar instead of bleach to clean mildew?
Vinegar can help remove some mildew, but bleach is more effective at killing mildew spores. Vinegar is a good non-toxic alternative for mild mildew, but bleach is best for severe mildew growth.
How do I dry outdoor cushions quickly?
Lay cushions flat in direct sunlight to dry fastest. Turn periodically and replace with dry sections. Fans and dehumidifiers also speed drying if rain is expected again.
What if the mildew stains remain after cleaning?
Stubborn mildew stains may take more than one treatment to fully remove. Re-clean with bleach, let dry in the sun, and spot treat with lemon juice or non-chlorine oxygen bleach. The stains should lighten over time.
Can mildew spread to other cushions or fabric?
Yes, mildew spores can spread from one cushion to others during storage or use. Clean all cushions at the same time to prevent recontamination. Discard any cushions too damaged by mildew.
How often should outdoor cushions be cleaned?
Inspect weekly and clean any visible mildew immediately. Deep clean all cushions at least twice a year—at the start and end of the season. More frequent cleaning may be needed in humid climates.
Conclusion
Mildew is a common problem with outdoor cushions, but it can be effectively removed with some work. Bleach solutions, thorough rinsing, and drying in sunlight are key to cleaning mildew off cushions. Preventing mildew growth in the first place is ideal through proper drying, storage, and maintenance. With this guide, you can keep patio and outdoor cushions fresh and mildew-free all season long.