Published June 28, 2026
Deck and Fence Cleaning Guide for Homeowners
How to safely clean composite decking and vinyl fencing, with the right approach for each material.
Composite decks and vinyl fencing both need a gentler cleaning approach than concrete. Too much pressure can etch composite decking or strip a vinyl fence's finish, so the right method depends heavily on the material involved.
Cleaning Composite Decking
Composite decking can develop a chalky or dingy film over time, along with mold and mildew in shaded areas. Because composite material can scar or discolor under high pressure, cleaning it requires lower pressure settings and a cleaning solution suited for composite material rather than relying on water force alone.
Cleaning Vinyl Fencing
Vinyl fencing collects green and black algae streaking similar to siding, especially on shaded sides of the yard. Soft washing is generally the safer approach for vinyl fencing, since it cleans effectively without the risk of cracking panels that can come with high-pressure equipment.
Composite Deck Issues
- Surface film or fading
- Mold in shaded areas
- Pollen and dirt between boards
- Needs reduced pressure
Vinyl Fence Issues
- Green and black algae
- Dirt near the ground line
- Discoloration from moisture
- Best soft washed
How Often Should Decks and Fences Be Cleaned?
Most composite decks and vinyl fences benefit from cleaning once a year, with shaded or heavily wooded properties sometimes needing it more often due to increased moisture retention.
Why DIY Cleaning Often Goes Wrong
A standard pressure washer set too high can etch composite boards or crack vinyl panels in a single pass. Without the right pressure setting and cleaning solution, DIY attempts often either fail to remove the buildup or end up damaging the material trying to force the issue. See our deck cleaning and fence cleaning services for details.
Deck and Fence Cleaning FAQ
Can pressure washing damage composite decking?
Yes, if the pressure is too high. Composite material can scar or discolor under high pressure, which is why a lower-pressure, material-appropriate approach is used.
Is soft washing safe for vinyl fences?
Yes. Soft washing is generally the safer method for vinyl fencing, similar to vinyl siding.
How often should a composite deck be cleaned?
Most composite decks benefit from cleaning once a year, with shaded decks sometimes needing it more often.
Can you clean decks and fences in the same visit as house washing?
Often yes. Bundling exterior services on the same visit is typically more efficient than scheduling them separately.
Restore Your Deck or Fence
Request a free, no-pressure quote for safe, material-appropriate cleaning.