Outdoor Furniture Cleaning: The Complete Guide by Material
The best way to clean outdoor furniture depends on what it’s made of — plastic, metal, wood, and wicker each need a different approach. For most materials, a scrub with warm soapy water handles routine dirt. For seasonal deep cleaning, mildew removal, or stubborn stains, you need material-specific methods. This guide covers all four major outdoor furniture types with step-by-step instructions.
What You’ll Need
- Bucket of warm water
- Dish soap or mild all-purpose cleaner
- Soft-bristle brush or sponge
- Stiff scrub brush (for textured surfaces)
- Garden hose with spray nozzle
- White vinegar (for mildew)
- Baking soda (optional, for odor/stain treatment)
- Rubber gloves
- Microfiber cloths or old towels
- Teak oil or furniture sealant (optional, for wood)
- Car wax or UV protectant (optional, for plastic)
Safety and Precautions
Before you start, check furniture joints and frames for rust, rot, or structural weakness — wet cleaning can accelerate damage to already-compromised pieces. Wear rubber gloves if using any bleach-based cleaners. Never use a pressure washer on wicker furniture or older wood pieces; the force can split fibers and lift grain. Always work in shade or early morning — cleaning in direct hot sun causes soap to dry too fast and leave streaks. Avoid mixing bleach with vinegar or ammonia. See our guide on cleaning products to avoid mixing for a full safety reference.
How to Clean Plastic Outdoor Furniture
Plastic furniture is the most forgiving to clean but develops a grayish oxidized film over time. Here’s how to restore it:
Rinse First
Spray down plastic chairs and tables with a garden hose to remove loose dirt, bird droppings, and debris. This prevents scratching during scrubbing.
Scrub with Soapy Water
Mix 2 tablespoons of dish soap in a bucket of warm water. Scrub all surfaces with a soft-bristle brush or sponge. For textured plastic, use a stiffer brush to get into crevices.
Treat Stubborn Stains or Gray Film
Make a paste of baking soda and water and apply it to gray oxidized areas. Let it sit 5 minutes, then scrub with a damp cloth. For mildew spots, spray with a 1:4 bleach-to-water solution, let sit 10 minutes, then scrub and rinse. This is identical to the technique in our mildew removal guide.
Rinse and Dry
Rinse thoroughly with the garden hose. Wipe dry with a microfiber cloth to prevent water spots.
Apply UV Protectant (Optional)
A coat of car wax or spray UV protectant extends the life of plastic furniture by preventing oxidation and fading. Apply once per season.
How to Clean Metal Outdoor Furniture
Aluminum, steel, and iron furniture each have slightly different needs. The method below works for all three:
Wipe Down and Pre-Rinse
Brush off any debris and rinse with a hose. Inspect for rust spots — address these first before general cleaning.
Clean with Soapy Water
Use warm water and dish soap with a soft cloth or sponge. For detailed areas and joints, an old toothbrush reaches where sponges can’t.
Treat Rust Spots
For light rust on steel or iron, rub with a paste of baking soda and lemon juice. For heavier rust, use a fine steel wool pad (0000 grade) to gently buff — then wipe clean. Aluminum doesn’t rust but may oxidize white; scrub with a vinegar-water mix to restore shine.
Rinse and Dry Immediately
Metal furniture must be dried quickly after washing — standing water causes rust on steel and iron. Use a towel to dry all surfaces, especially joints and feet where water pools.
Apply Rust Inhibitor or Paint (If Needed)
For cast iron and steel furniture, a light coat of outdoor furniture paint or a rust-inhibiting spray after cleaning protects against future oxidation.
How to Clean Wood Outdoor Furniture
Natural wood — teak, cedar, pine — needs gentle cleaning to avoid raising the grain or stripping natural oils:
Brush Off Debris
Use a dry soft-bristle brush to sweep away dirt and debris before wetting the wood.
Clean with Diluted Dish Soap
Mix 1 tablespoon of dish soap per gallon of warm water. Use a soft cloth or brush to clean with the grain — never against it. For teak and hardwoods, a dedicated teak cleaner preserves the wood’s natural oils better than dish soap. Our teak furniture cleaning guide goes deeper on this.
Rinse Gently
Use a hose on a low-pressure setting — never a pressure washer. High pressure opens the wood grain and accelerates weather damage.
Dry Completely
Allow wood furniture to air dry in sunlight for at least 24 hours before applying any sealant or oil. Trapping moisture under a finish causes mold and rot.
Re-Oil or Seal Annually
Apply teak oil, linseed oil, or an outdoor furniture sealant once the wood is fully dry. This prevents cracking, graying, and mildew from developing in the grain.
How to Clean Wicker and Rattan Outdoor Furniture
Wicker requires careful cleaning — the woven structure traps debris and is easily damaged by excessive water or pressure. For detailed care, see our complete wicker furniture cleaning guide. The quick method:
Vacuum First
Use a brush attachment to vacuum loose dirt and debris from all crevices in the weave before introducing any water.
Wipe with a Damp Cloth
Dip a cloth in soapy water, wring it nearly dry, and wipe down all surfaces. Avoid soaking wicker — excess water warps and weakens the fibers.
Detail Clean with a Soft Brush
An old toothbrush or small paintbrush gets into the weave crevices where a cloth can’t reach.
Rinse Minimally
A very light spray from a hose on its lowest setting is fine — don’t blast wicker directly. Wipe off water immediately.
Dry Thoroughly
Place in direct sunlight until fully dry. Damp wicker stored in shade grows mold quickly.
Pro Tips for Outdoor Furniture Maintenance
- Cover furniture when not in use: Furniture covers extend cleaning intervals dramatically — an uncovered chair needs monthly cleaning vs. bi-annual for covered pieces.
- Clean cushions separately: Remove cushions and clean them apart from the furniture frame. Check out our outdoor cushion cleaning guide for best results.
- Store in winter: In climates with freezing temperatures, store furniture indoors or in the garage during winter. See our garage cleaning tips for making space efficiently.
- Inspect annually before first use: Check all bolts, welds, and joints at the start of each outdoor season. Tighten any loose hardware before the summer of heavy use.
- Spot-clean immediately: Bird droppings, tree sap, and food spills are much easier to remove fresh than dried. Keep a spray bottle of soapy water near the patio for quick spot-cleaning.
Frequently Asked Questions
What is the best way to clean outdoor furniture?
Warm water and dish soap handles most outdoor furniture cleaning. Use a soft brush for plastic and metal, follow the wood grain for wooden furniture, and use minimal water on wicker. For mildew, a 1:4 bleach solution works for non-porous materials; white vinegar works better on wood and wicker.
How do I remove mildew from outdoor furniture?
Spray a 1-part white vinegar to 2-parts water solution on the mildew, let it sit for 10–15 minutes, then scrub and rinse. For plastic and metal, a diluted bleach solution is faster. For persistent mildew on cushion fabric or wood, our mildew smell removal guide covers more intensive treatments.
Can I use a pressure washer on outdoor furniture?
Only on solid plastic and powder-coated metal furniture, and only on a low setting (under 1,500 PSI). Never use a pressure washer on wood, wicker, or rattan — the force splinters wood grain and unravels wicker fibers permanently.
How often should outdoor furniture be cleaned?
At the start and end of each outdoor season is the minimum (twice a year). Monthly wiping during active use seasons keeps buildup from becoming deep-set. Furniture in humid climates or under trees may need monthly deep cleaning during summer.
How do I prevent outdoor furniture from getting moldy?
Store or cover furniture when not in use for extended periods. Apply a UV protectant or sealant annually to create a barrier against moisture. Clean off debris regularly — fallen leaves and standing water in joints are the main mold triggers.
Conclusion
Keeping outdoor furniture clean is mostly about matching your cleaning method to the material and staying consistent through the season. Plastic and metal are the most forgiving, wood needs the most care, and wicker needs the lightest touch. A twice-yearly deep clean plus regular spot-cleaning is all most patio setups need. Next up — if your furniture has removable cushions, give them the same attention with our outdoor cushion cleaning guide.
