How to Clean Vinyl Siding

Vinyl siding is low-maintenance, but it still collects dirt, pollen, mildew and green algae, especially on shaded sides of the house. Cleaning it once a year keeps your home looking fresh.

What You'll Need

A soft-bristle brush with an extension pole
A bucket
Dish soap or a vinyl siding cleaner
Oxygen bleach (for mildew and algae)
A garden hose
Eye protection and gloves

Step 1: Prepare

Close windows, cover outdoor outlets and light fixtures, and wet nearby plants.

Step 2: Mix the Cleaner

For general dirt, mix dish soap into a bucket of warm water. For mildew and algae, use a vinyl siding cleaner or oxygen bleach mixed according to the directions.

Step 3: Wash from Bottom to Top

Starting at the bottom of a section, scrub the siding with the soft brush. Working bottom to top helps prevent streaks.

Step 4: Rinse from Top to Bottom

Rinse each section thoroughly with a hose, from the top down.

Pressure Washing

If you use a pressure washer, use low pressure, keep the spray aimed downward, and avoid spraying up under the siding panels, where water can get behind them. Check your siding manufacturer's recommendations.

Tips

Work on a cloudy day so the cleaner doesn't dry too fast.
Clean one section at a time.
Don't use abrasive scrubbers or harsh solvents, which can damage vinyl.

FAQ

How often should I clean vinyl siding? Once a year, or as needed.

What causes green stains on siding? Algae and mildew grow in shaded, damp areas.