How to Clean Outdoor Patio Furniture

Cleaning outdoor patio furniture regularly keeps it looking good and extends its lifespan. Dirt, pollen, bird droppings, mold, and mildew all degrade finishes, fabric, and frame surfaces over time if they are allowed to build up. The right cleaning method depends entirely on what your furniture is made from, using the wrong product can strip finishes, discolor fabric, or damage wood grain.

This guide covers the correct cleaning approach for every major outdoor furniture material.

How Often to Clean Patio Furniture

A quick rinse or wipe-down every few weeks during the season prevents buildup. A more thorough clean once or twice a season removes embedded grime, mold spores, and accumulated deposits from finishes.

An end-of-season clean before storage is particularly valuable. Furniture stored dirty is more likely to develop mold over winter, and dried-on deposits are harder to remove in spring than fresh ones.

Cleaning Powder-Coated Aluminum Furniture

Powder-coated aluminum is the easiest outdoor furniture material to clean. The non-porous surface does not absorb grime and responds well to mild detergent and water.

What you need: Mild dish soap, warm water, a soft cloth or sponge, a garden hose.

Method:

  1. Rinse the frame with a garden hose to remove loose dust and debris.
  2. Mix a small amount of mild dish soap in a bucket of warm water.
  3. Wipe down all frame surfaces with a soft cloth or sponge dipped in the soapy water.
  4. Pay attention to joints, welds, and any recessed areas where dirt accumulates.
  5. Rinse thoroughly with clean water.
  6. Allow to air dry or wipe dry with a clean cloth.

What to avoid: Abrasive scrubbers, steel wool, or harsh chemical cleaners. These can scratch or strip the powder coat. Avoid high-pressure washers aimed directly at powder-coated surfaces, moderate water pressure from a garden hose is sufficient.

Touch-up: If you notice any chips or scratches in the powder coat, touch them up with matching outdoor metal paint as soon as possible to prevent corrosion at the exposed aluminum surface.

Cleaning Teak Furniture

Teak requires a little more care than aluminum but is straightforward once you know the process. The goal is to clean the surface without stripping the natural oils.

Routine cleaning:

  1. Brush off loose debris with a soft brush.
  2. Wash with mild dish soap and warm water, using a soft cloth or brush.
  3. Rinse well and allow to dry fully before applying any treatment.

For gray weathering or embedded grime: Use a dedicated teak cleaner (widely available at garden centers). Apply according to the manufacturer’s instructions, scrub gently with a soft brush following the wood grain, and rinse thoroughly. Do not use a stiff wire brush, it will scratch the surface.

After cleaning: If you want to restore or maintain the golden-brown color, apply teak oil or teak sealer once the wood is completely dry. Allow the oil to penetrate for at least an hour, then wipe off any excess.

What to avoid: Bleach-based cleaners will damage the wood surface and strip natural oils. Pressure washers on high settings can raise the wood grain and create splinter risk. Always work with the grain, not against it.

Cleaning Steel Furniture

Steel furniture needs careful handling because water left in contact with scratched or damaged powder coat can initiate rust.

Method:

  1. Rinse with a garden hose.
  2. Wash with mild soapy water and a soft cloth.
  3. Rinse thoroughly.
  4. Dry promptly with a clean cloth, do not leave standing water on steel frames.

Rust spots: If small rust spots are visible, address them quickly. Sand the affected area lightly with fine-grit sandpaper, apply a rust-inhibiting primer, and finish with matching outdoor paint or powder-coat touch-up paint.

Prevention: Apply a thin layer of automotive wax to cleaned steel frames annually to provide an additional moisture barrier over the powder coat.

Cleaning Resin Wicker Furniture

All-weather resin wicker cleans easily but benefits from a thorough rinse to clear debris from within the weave.

Method:

  1. Use a garden hose to rinse the entire piece, paying particular attention to the wicker weave where dust and debris accumulate.
  2. Mix mild soapy water and scrub the weave gently with a soft brush, an old toothbrush or detail brush reaches inside the weave pattern effectively.
  3. Rinse thoroughly and allow to dry completely.

What to avoid: Abrasive cleaners or solvents can degrade the resin weave over time. Avoid high-pressure washing, which can work its way between the weave and the frame.

Cleaning HDPE Poly Lumber

Poly lumber is the easiest material to clean. It does not absorb grime and is highly resistant to staining.

Method: Wash with mild soapy water and a soft cloth or sponge. Rinse with clean water. For stubborn stains, a diluted bleach solution (1 part bleach to 10 parts water) can be used without harming the material, poly lumber is not affected by mild bleach.

Cleaning Outdoor Cushions

Cushion cleaning depends on the fabric type.

Solution-dyed acrylic (Sunbrella and similar):

  1. Brush off loose debris.
  2. Hose down the cushion.
  3. Apply a solution of mild soap and water with a soft brush.
  4. Rinse thoroughly.
  5. Allow to air dry fully in a sunny spot before storing or replacing. Do not store damp cushions, mold will develop even in weatherproof fabrics if foam stays wet.

For deeper cleaning or mold treatment on Sunbrella, a diluted bleach solution (1 cup bleach per gallon of water plus a small amount of dish soap) is safe to use on solution-dyed acrylic without affecting the color.

Budget polyester cushion covers: Check the care label. Many can be machine-washed on cold. Air dry only, heat can shrink or distort synthetic cushion covers.

Cushion foam: If the foam core has absorbed water or developed mold, it may need to be replaced rather than cleaned. Mold that has penetrated foam cannot be fully eliminated with surface cleaning.

End-of-Season Cleaning Checklist

Before storing furniture for winter or covering it for an extended period:

  • Clean all frames with appropriate method for the material
  • Wash all cushion covers
  • Allow all components to dry completely before storing or covering
  • Check for rust spots on steel frames and treat before storage
  • Apply teak oil if finishing teak furniture for winter
  • Check for any cracked or broken weave on resin wicker

Furniture that goes into storage clean comes out in spring in significantly better condition than furniture stored dirty. Our guide to storing patio furniture in winter pairs directly with this cleaning process.