Residential · Los Angeles, CA
Deck Cleaning in Los Angeles
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Deck Cleaning
How is a wood or composite deck cleaned?
A deck is cleaned with a deck-appropriate solution, left to work, then rinsed at low pressure along the board direction. That lifts greying, mildew between boards and food stains without furring the wood. Composite decking is cleaned according to the manufacturer's guidance.
Decks take sun, spills and organic debris, and wood in particular is easy to damage with too much pressure. Deck cleaning uses low pressure and suitable solutions so boards come back clean without raised grain or wand marks.
A deck-appropriate cleaning solution is applied, given dwell time, then rinsed at low pressure working with the board direction. Composite decking is cleaned per the material's tolerance.
Pressure washing vs. soft washing
High pressure can splinter wood and etch composite. Decks are cleaned with low pressure and solution rather than force.
Problems addressed
- Grey, weathered wood
- Mildew between boards
- Food and drink stains
- Dirt packed into grooves
Surfaces
- Softwood and hardwood decks
- Composite decking
- Stairs and railings
- Balconies
Property types
- Single-family homes
- Hillside homes with elevated decks
- Condo balconies
What deck cleaning removes
Deck cleaning lifts the grey, weathered film that sun and oxidation leave on exposed wood, along with mildew growing in the shaded gaps between boards and the dirt that packs into grain and grooves over a season of use. It also clears out food and drink spills, pollen residue, and the fine dust that settles between boards near planters or trees. Railings and stair treads, which take hand contact and extra UV exposure, usually come up noticeably lighter once the built-up grime is gone.
What cleaning can't fix
Cleaning will not undo wood that has already gone soft, splintered, or cupped from years of moisture exposure — that calls for a carpenter's eye, not a hose. Deep stains from rust, tannin bleed from certain hardwoods, or old oil-based sealers that have broken down unevenly may lighten but not fully disappear. Composite boards that have faded from UV exposure will come out cleaner but not restored to their original color, since that fade is in the material itself, not sitting on top of it.
How we do it, and why this method
The process starts with a deck-specific cleaning solution brushed or sprayed across the boards and left to sit so it can break down embedded grime and organic growth without needing force to do it. Once the solution has worked, the deck is rinsed at low pressure, moving with the grain of the boards rather than across them, which avoids raising the grain or leaving visible wand lines.
Wood decking is treated differently from composite. Softwoods like pine or cedar can splinter or fur up under high pressure, so the nozzle distance and pressure are kept conservative throughout. Composite decking has its own tolerance limits set by the manufacturer, and those limits guide both the pressure used and the type of cleaning solution applied, since some chemicals can discolor composite finishes.
What affects the cost
- Total deck square footage affects how long the job takes from start to finish.
- Board spacing and the depth of grooves between planks change how much scrubbing or dwell time is needed.
- Composite decking generally requires gentler methods than solid wood, which can shift the approach used.
- Heavy mildew in shaded sections often needs extra pre-treatment compared to sun-exposed areas.
- Railings, stairs, and built-in benches add surface area and detail work beyond the flat deck boards.
- Furniture, planters, and grills left in place need to be moved before work can begin.
More detail: pressure washing cost in Los Angeles.
When to schedule
Many homeowners schedule deck cleaning before staining or sealing season, since both of those finishes need a clean, dry surface to bond properly. Spring is a common time after winter grime and dormant mildew have had a chance to build up, but a deck that gets heavy shade or constant foot traffic can benefit from a cleaning whenever it starts looking dull, regardless of season. If outdoor entertaining is planned, cleaning a week or two ahead gives the wood time to fully dry and look its best.
What to expect on the day
On arrival, the crew checks the deck surface, board material, and any problem areas like dark mildew patches or stuck-on debris before starting. Furniture, planters, grills, and rugs should be cleared off beforehand so the whole surface is accessible. A garden hose connection or on-site water access is used for rinsing, and the crew works section by section, applying solution, letting it dwell, then rinsing at low pressure. Wood decks need time to dry fully before anyone walks on them barefoot or before any stain or sealant is applied, so plan on the deck being usable but not immediately ready for refinishing.
Questions
Deck Cleaning FAQ
Should I clean my deck before staining?
A clean, dry surface is usually required before staining or sealing. Confirm timing with your stain manufacturer or contractor.
Can composite decks be pressure washed?
They can be cleaned at low pressure suited to the material. Many manufacturers specify limits, which we follow.
How often should a deck be cleaned?
Most decks benefit from cleaning once or twice a year, though shaded or heavily used decks may need it more often.
Will cleaning remove old stain or paint from the deck?
Routine cleaning removes dirt and growth, not an intact coat of stain or paint. Stripping old finish is a separate, more involved process.
Can you clean a deck with loose or damaged boards?
We can clean around minor wear, but loose, rotted, or structurally unsound boards should be repaired first for safety.
Is it safe to walk on the deck right after cleaning?
The surface can be wet and slippery immediately after rinsing, so it's best to stay off it until it has mostly dried.
Where we offer deck cleaning
Helpful guides
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