How to Clean Your Rowing Dock

To clean a rowing dock, sweep it, wet it, scrub it with a stiff brush and rinse it with as little water as you can. Plain water does most of the work, and you should only add a mild cleaner if that fails. Algae, mud and wet leaves make a dock dangerous for anyone carrying a boat, so treat this as a safety job. If the dock belongs to your club, check who is responsible and what rules apply before you start.

A simple cleaning rota

When	Job	Rough time
After busy sessions	Sweep leaves and mud, pick up litter	2 to 5 minutes
Every 2 to 4 weeks, spring to autumn	Full scrub of the walking surface	30 to 60 minutes for two people
Monthly in winter	Clear leaf build-up, check for frost damage	15 to 30 minutes
Once a year	Inspect fixings, reseal timber, renew anti-slip strips	A half-day work party

These are rules of thumb. A shaded dock on a still stretch will need more attention than a sunny one on a flowing river.

What you need

• A stiff broom and a long-handled deck brush.
• A hose with a spray nozzle, or buckets of clean water.
• A mild cleaner marked as safe for use near water, only if plain water isn’t enough.
• Gloves, grippy footwear and a buoyancy aid if you’re working near the edge.
• A squeegee or mop to push surface water off.
• Bags for litter and debris.

Skip bleach and strong solvents. They can wash into the river and harm wildlife, and they can damage wood and metal fixings.

Before you start

• Check the weather and water. Avoid strong wind, frost and high water.
• Work in pairs. Falling in matters more than it looks. Water below 15°C can trigger cold water shock, and in the UK it can stay that cold on a hot day.
• Cover any cuts. The NHS advises waterproof plasters on cuts and a shower soon afterwards, since leptospirosis spreads through freshwater and soil contaminated by animal urine. Wear gloves, and keep your hands away from your face.
• Clear the area. Move kit, chairs and boats away.
• Look for damage. Note loose boards, rusted fixings, protruding nails and splintered wood. Fix hazards before you clean, not after.

Step by step

1. Clear debris. Sweep leaves, litter and loose mud towards the land end, not into the water.
2. Wet the surface. Hose or bucket-rinse the dock.
3. Apply cleaner if needed. Work in sections of about 2 metres so it doesn’t dry on.
4. Scrub. Use a stiff brush on slimy or mossy patches. Work along the grain on wood. Give extra time to steps, ramps and the line people walk when carrying boats.
5. Rinse. Wash away dirt and cleaner, using as little water as you need.
6. Squeegee. Push standing water off so the surface dries faster.
7. Let it dry. Keep boats off until the area is safe to walk on, and put out a cone or sign while it’s wet. If the dock has to stay shut while it dries, your session can move indoors, and our guide to what rowing machines gyms use shows what to expect.

Never pour chemicals into the water. Use as little cleaner as you can, and rinse so it runs away from the edge wherever the dock allows.

Pressure washers

A pressure washer clears algae fast but can damage wood and loosen sealant. Get the owner’s permission first. Use a low setting and keep the jet moving. As a rule of thumb, hold the nozzle at least 30 cm from the surface. Never aim a jet at people, animals or electrical fittings. On a floating pontoon, also check where the dirty water goes, because the jet pushes it straight into the river.

Timber, plastic and metal docks

Material	Cleaning tips	Watch for
Timber	Scrub along the grain; avoid harsh pressure	Soft boards, raised nails, finish that no longer sheds water
Plastic or composite	Stiff brush and mild cleaner	Slippery patches when wet; cracked sections
Metal grating	Brush out debris	Corrosion and sharp edges; treat rust early

Algae returns fastest in shade and in damp, still conditions, so expect to repeat the job.

Re-treating timber

If a timber dock is bare or worn, you can stain or seal it. Do this only on a dry, clean surface, after any repairs, with an outdoor product labelled as safe near water. Follow the drying times. A fresh coat protects the wood, but it can be slippery when wet unless it has grit or an anti-slip finish.

Keeping it safe between cleans

• Fit non-slip strips or an anti-slip coating where people walk and carry boats.
• Cut back overhanging branches that drop leaves.
• Clear snow and frost before sessions in winter.
• Keep walkways free of kit.
• Wipe up spilled lubricant or oil straight away.
• Land carefully. Concept2 advises approaching a dock with the blade tips up and keeping the blade face up on the dock, which protects the blade from rough wood and loose nails.

Common mistakes

• Sweeping debris into the water. It’s easy, but it adds to the mess downstream. Bag it instead.
• Cleaning once a year. A spring blitz leaves months of slime building up. Short, regular slots work better, and a club rota shares the load.
• Using too much cleaner. More product means more runoff. If it foams, you’ve used too much.
• Ignoring invasive species. If visiting crews use your dock, ask them to follow Check Clean Dry, the national campaign for water users, so that plants and creatures don’t travel between waters.

A clean dock is one part of a wider equipment care routine. Our page on eco-conscious rowing has more on protecting the water, and the clubs hub covers how clubs run.