Mildew on outdoor cushions can be frustrating, but with some effort and the right techniques, it can be removed. Here are some tips on how to effectively eliminate mildew from outdoor cushions.
Inspecting and Treating Mildew on Outdoor Cushions
When you first notice mildew on your outdoor cushions, it’s important to take action quickly before the growth can spread further. Follow these steps:
Check All Cushions Thoroughly
Carefully inspect all sides and seams of the cushions, looking for any signs of mildew growth. It often appears as black, gray, brown, or green spots or stains. Mildew can grow anywhere there is moisture, so focus on areas that tend to stay damp.
Remove and Isolate Affected Cushions
If you find mildew, remove the affected cushions right away. Keep them separate from non-affected cushions to prevent cross-contamination.
Act Fast for Best Results
The sooner you treat mildew growth, the better. Long-established mildew is much harder to eliminate. So inspect regularly and treat ASAP.
Work Outdoors
Always treat and clean mildewed cushions outside, or in a well-ventilated area. This stops mold spores spreading in your home.
Use Protective Gear
Wear gloves, a mask, goggles and clothing to cover skin when treating mildew. Some anti-mildew products can irritate.
Effective Mildew Removal Techniques and Products
There are various effective products and techniques for removing mildew from outdoor cushions. Here are some of the best options:
Baking Soda
Baking soda is a gentle but effective mildew cleaner. Mix 1 cup of baking soda with 5 cups of water and scrub into affected areas using a soft brush. Rinse thoroughly and allow to fully dry in the sun.
Vinegar
White vinegar kills mildew spores. Mix equal parts vinegar and water in a spray bottle. Spray cushions liberally, allow to sit briefly, then rinse with clean water. Allow to air dry.
Hydrogen Peroxide
As an anti-fungal, hydrogen peroxide can destroy mildew. Spray full-strength onto affected areas and let sit for 15 minutes before rinsing. Be sure to spot test first, as it can bleach fabrics.
Anti-mildew Cleaners
Look for commercial cleaners made specifically for mold and mildew removal. Concrobium or RMR-86 work well. Follow product instructions carefully.
Laundry Detergent
For removable cushion covers, wash in hot water with a strong detergent. Add borax or bleach for extra mildew-fighting power. Dry thoroughly in the sun.
lemon juice
Lemon juice’s high acidity kills mildew spores. Mix one part lemon juice with two parts water. Scrub into mildew stains using a soft brush, then rinse.
Chlorine Bleach
In severe cases, a bleach solution may be necessary. Mix 1 cup bleach into 1 gallon of water. Rinse thoroughly afterwards. Never mix bleach with other cleaners.
Prevention Tips to Stop Mildew Returning
Good mildew prevention practices will help keep your cushions mold-free after cleaning. Here are some useful tips:
- Allow cushions to dry thoroughly after rain before putting covers back on. Never cover damp cushions.
- Stick to recommended cleaning schedules – clean cushions at least monthly during mold-prone months.
- Hose down cushions regularly to remove surface dirt and spores.
- Fluff and rotate cushions frequently to expose all sides to light and air.
- Check for leaks – repair water-damaged outer covers to prevent interior mildew growth.
- Use mildew-resistant materials such as treated fabrics, waterproof barriers and antimicrobial fillers.
- Store cushions indoors (or at least out of rain) when not in use for extended periods.
- Keep patio and deck areas clean and dry to deprive mildew of damp, organic matter to feed on.
When to Discard Mildewed Cushions
If mildew is extensive and deep-rooted in the cushion interior, removal attempts may ultimately fail. At this point, it’s best to discard the cushion and replace it. Signs it’s time to throw out a cushion include:
- Mildew stains remain visible after repeated cleaning attempts
- Pervasive musty odors coming from inside cushion
- Presence of black mold deep in cushion seams or folds
- Evidence of water damage/leakage
- Cushion feels damp and spongy when pressed
Discard compromised cushions properly by sealing in bags and placing in outdoor trash. This prevents spread of mildew spores back into your home.
Frequently Asked Questions About Removing Mildew From Outdoor Cushions
How do I know if my outdoor cushions have mildew?
Look for black, gray, brown or green spots, stains or musty odors on your cushions. Growth often occurs in moist, shaded areas. Rub a finger over suspicious spots – mildew may smear or feel slightly fuzzy.
What is the fastest way to remove mildew from cushions?
For quick mildew removal, mix 1 part lemon juice and 2 parts water. Scrub into stains using a soft brush, let sit briefly, then rinse. Lemon juice kills mildew on contact.
What strength hydrogen peroxide should I use on mildew stains?
For best results, use hydrogen peroxide in its full 3% pharmacy strength to remove mildew from cushions and outdoor fabrics. Diluted peroxide is less effective at killing mold spores.
Can I put cushions back outside after mildew removal?
Yes, cushions can go back outside after successful mildew treatment. Just be sure they are completely dry first. Follow prevention tips to help stop mold recurring. Discard cushions with severe mildew cases.
How often should outdoor cushions be cleaned?
To prevent mildew growth, thoroughly clean all outdoor cushions at least once a month during warm, humid weather when mildew is most likely to develop.
Conclusion
If tackled promptly, mildew can be removed from outdoor cushions using natural methods like baking soda and vinegar. For more stubborn cases, hydrogen peroxide, bleach, enzymatic cleaners and hot laundry washes also prove effective. Along with vigilant inspections and good prevention practices, you can keep cushions fresh and mold-free for longer. With some perseverance, those unsightly mildew stains don’t stand a chance!