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Gelcoat Care
8 min read
October 20, 2025

August Race Boat Wash Pro: Remove Algae & Salt

pH-neutral, coating-safe boat wash that removes algae on gelcoat and salt deposits with streak-free results after lake trips. Safe, biodegradable, effective.

August Race Boat Wash Pro: Remove Algae & Salt (product)

How August Race Boat Wash Pro Conquers Algae on Gelcoat and Salt Deposits

A lake weekend can leave even a well-kept hull wearing a film you can feel: algae on gelcoat along the waterline and salt deposits packed into creases around trim tabs, strakes, and hardware bases. As a marine tech, I start with senses. Biofilm feels slick and ropey under a glove; salt feels granular and brittle, especially where splashback dries repeatedly. Both reduce gloss and can stress gelcoat over time.

Early detection matters. Trapped moisture under biofilm increases osmotic stress, while crystalline salt can micro-etch and undermine wax layers. Leave it long enough and adhesion suffers -- protective sealants have a harder time bonding to paintwork grime and organics. The catch? Many cleaners that cut fast also strip wax or haze sensitive finishes.

If you’re a tech faced with these symptoms, here’s the checklist I use to choose a wash -- starting with compatibility and pH.

What a marine tech needs to know: chemistry and compatibility

When I say “pH-neutral,” I mean a working solution that sits near pH 7, so it’s gentle on gelcoat, clearcoat, and wax films. That neutrality helps you clean without swelling polymer matrices or dulling sealants -- key if you’re after the best pH-neutral wash for algae-covered boats.

Algae isn’t just slime; it’s a polysaccharide matrix that locks in silt and organic load. You want surfactants that slice into that matrix and suspend particulates so the rinse can carry them away. Mild chelating agents help lift mineral salts without needing strong acids. In short, chemistry should do the heavy lifting so you don’t need aggressive scraping.

Compatibility checks I apply:

  • Favor non-ionic/anionic surfactant blends that rinse clean and don’t react with metals.
  • Avoid high-alkali builders like sodium metasilicate for routine washing; they can haze gelcoat and attack aluminum if misused.
  • Confirm safe use near stainless fixings, anodized aluminum, and painted trim; no staining or white bloom.
  • Confirm no adverse effect on antifouling at the boot stripe when incidental contact happens during lake boat cleaning.

Environmental considerations matter, especially on freshwater. Look for biodegradable, low-toxicity formulations with sensible rinse-water practices -- eco-safe solutions for grimy boat exteriors in spring should protect lakes as well as finishes.

With those specs in mind, here's how this product stacks up.

August Race Boat Wash Pro -- formulation highlights and why it works on algae and salt

August Race Boat Wash Pro is engineered for routine hull and topside cleaning where you need cut without collateral damage. The working profile is pH-neutral, using readily biodegradable surfactants and mild chelating action to loosen mineral content. That combination targets both the organic glue in freshwater biofilm and the inorganic fraction in salt deposits without etching gelcoat.

Mechanistically, here’s what you can expect on hulls:

  • Surfactants wet out the slime layer, penetrating the polysaccharide network so it releases from gelcoat and clearcoat.
  • Chelants complex with calcium and magnesium in salt and hardness crusts, so crystals break apart and rinse instead of smearing.
  • Dispersants keep fine silt in suspension to reduce re-deposition and streaking.

Used as directed, the wash is compatible with wax, polish, and sealants, so it won’t intentionally strip protection. That’s important if you’re aiming for streak-free cleaning for gelcoat after lake trips without resetting your protection cycle.

Practical settings for the field:

  • Dilution: For light fouling, start around 1:100 in a bucket or foam sprayer. For heavier algae on gelcoat or stubborn waterline scum, tighten to 1:50. Always test a small area first.
  • Dwell: Allow 2–4 minutes of contact time -- do not let the solution dry. Shade helps.
  • Agitation: Use a soft-bristled brush on gelcoat and painted topsides; microfiber mitts for smooth topside panels and vinyl graphics. Step up dwell before stepping up pressure.

Limitations to keep in mind:

  • This is not a paint stripper or compound; it won’t remove heavy oxidation, embedded tannin/rust staining, or deep yellowing. Plan follow-up polishing when required.
  • For severe calcareous scale, a dedicated descaler may be necessary -- mask sensitive metals and follow manufacturer guidance.

Next, a field-tested, step-by-step approach that reduces variables and keeps finishes safe.

Step-by-step: lake boat cleaning protocol for streak-free gelcoat

A consistent process is how you get repeatable outcomes and avoid surprises.

1) Prep and inspection

  • Note surface temperature; aim for cool-to-the-touch panels. Hot gelcoat flashes chemistry and causes streaks.
  • Check water hardness. Hard water raises rinsing demand -- plan for a final soft-water rinse or laminar sheeting.
  • Identify fragile details: vinyl decals, canvas, plexiglass windscreens, electronics, and uncoated anodized parts. Rinse and keep them wet during dwell.
  • Photograph waterline staining, algae on gelcoat, and known salt deposits for before/after documentation.

2) Mixing and application

  • Light fouling: Mix August Race Boat Wash Pro at ~1:100 in a wash bucket or foam sprayer.
  • Heavy fouling: Mix at ~1:50, or pre-spray trouble spots from a pump-up sprayer for even coverage.
  • Apply from the bottom up to minimize runs. Work in sections you can manage within the dwell window (typically a few minutes).

3) Mechanical technique

  • Allow short dwell, then agitate with a soft-bristled brush following the hull profile in long, overlapping strokes.
  • For removing freshwater algae from hulls, let chemistry penetrate first; avoid gouging at the film. Re-wet as needed.
  • Rinse with low-pressure fresh water from the top down. Avoid aggressive nozzles that can drive grit into the surface or under decals.

4) Drying and buffing for a streak-free finish

  • Use laminar sheeting: pull the hose so water flows as a sheet, reducing droplets and mineral spots.
  • Dry with clean microfiber towels. Flip often to avoid re-depositing grime.
  • If the boat is protected, follow with a maintenance spray wax like Smooth Opacity UV wax or a gelcoat UV protective sealant such as GRP Sealer UV per the coating schedule. This locks in gloss and improves next-wash release.

5) Post-clean checks

  • Inspect hardware bases, scuppers, trim tabs, and through-hulls for trapped salt deposits; spot-rinse if needed.
  • Wipe down stainless to prevent tea staining. Check anodized parts for any film -- re-wipe with a damp microfiber.
  • If salt intrusion is suspected, flush bilge and washdown lines with fresh water.
  • Log dilution, dwell, water conditions, and outcomes in maintenance records for process control.

Field performance: evidence, measurements, and technician tips

When you standardize process, you can standardize outcomes. For routine lake boat cleaning, set targets such as:

  • Light algae release within one pass of soft agitation after a 2–4 minute dwell.
  • Contact time kept under five minutes per section without drying.
  • Rinse water clearing clean with minimal suds within two passes, indicating full suspension and release.

Technician tips that raise success rates:

  • Pre-soak shaded areas first and maintain a wet edge; chemistry works best when it doesn’t flash.
  • Use repeated low-pressure passes rather than one aggressive pass -- this protects coatings and clearcoats.
  • For paintwork grime with oily or silicone contamination, pre-wash with a dedicated panel-safe degreaser on a microfiber, then follow with Boat Wash Pro.

Troubleshooting:

  • If streaks remain, re-apply at the higher end of the dilution range and extend dwell slightly in shade. Clay-bar bonded contaminants only if the surface is well-lubed and the coating allows it.
  • Persistent staining or oxidation calls for machine polishing. If the surface no longer holds gloss after washing and decontamination, recommend professional re-coating or sealant renewal.

If these outcomes match your thresholds, here’s how to specify August Race in your maintenance program.

Specifying August Race Boat Wash Pro in maintenance SOPs

Schedule: For active lake use, plan a full wash after each trip and a deeper decontamination every 4–6 weeks during the season. Start with a baseline dilution (1:100 routine, 1:50 heavy) and adjust by temperature and fouling.

Integration: Pair washes with your waxing and polishing cycles -- wash, inspect, then decide if a spray wax or polymer sealant top-up is warranted. Keep an eye on gloss retention and be ready to polish only when oxidation, not dirt, is the issue.

Documentation: Stock August Race Boat Wash Pro in your kit, along with PPE and the Safety Data Sheet (SDS). Include product line items and process notes in client quotes so expectations are clear.

KPIs to monitor:

  • Gloss units before/after (if you have a gloss meter)
  • Time-to-next-clean (days of clean appearance)
  • Number of wash cycles before protective coating reapplication is needed

Client communication: Explain that a wash removes contamination but not oxidation or deep staining. If you see limits, recommend add-on polishing or stain-specific treatments.

If you want to test it out, here’s the best next step.

How to trial the product on your fleet (quick test plan)

Run a low-risk, data-driven trial over three boats for one month.

Success metrics:

  • Visual cleanliness within one pass of soft agitation after a controlled dwell
  • No dulling or haze on gelcoat, clearcoat, vinyl graphics, or anodized trim
  • Positive client satisfaction notes on appearance and feel

What to prepare:

  • August Race Boat Wash Pro, pump-up sprayer, soft brushes, microfiber towels, and PPE (gloves, eye protection)
  • Before/after photos under consistent light; optional gloss meter readings
  • Simple logs for dilution, dwell time, ambient temp, and rinse water usage

Actions:

  • Request a sample kit or technical data sheet and schedule a short product briefing with an August Race rep.
  • Order a small case to support the trial, then review results at 30 days and decide on SOP adoption.
  • For additional maintenance products, visit the August Race shop to source sealants, waxes, and specialty cleaners.

Frame the trial as a standard technical evaluation -- low risk, measurable, and aligned with your maintenance standards.

August Race Boat Wash Pro: Remove Algae & Salt (lifestyle)

Final thoughts

For technicians balancing finish safety with cleaning power, August Race Boat Wash Pro fits the everyday brief: neutral chemistry, strong release of biofilm and minerals, and predictable rinsing. If algae on gelcoat and seasonal salt deposits are regulars in your shop, standardizing around a pH-neutral, coating-safe wash will cut rework and protect long-term gloss.

Common questions from techs: quick answers on safety and limitations

Safety and PPE: Wear gloves and eye protection. Keep zinc anodes and bare metals wet during dwell and rinse thoroughly; the product is compatible with stainless and anodized aluminum when used as directed.

Environmental notes: On lakes, contain and disperse rinse water responsibly per local rules. Use minimal effective dilution and choose biodegradable products to align with eco-safe solutions for grimy boat exteriors in spring.

Limitations: A wash won’t reverse oxidation or remove embedded stains; that’s polishing or stain-specific chemistry. It’s also not designed to strip coatings -- escalate only when needed and document changes.

Need edge-case guidance? Consult the SDS and technical support for unusual substrates, repainted topsides, or sensitive aftermarket coatings.

FAQ

Below are fast answers to the long-tail queries techs search for most often.

  • Is August Race Boat Wash Pro the best pH-neutral wash for algae-covered boats?

    It’s designed as a pH-neutral, coating-safe wash that targets biofilm and mineral grime without stripping wax. Whether it’s “best” comes down to your process and substrates, which is why I recommend a short, controlled trial with defined success metrics.

  • How do I remove freshwater algae from hulls without damaging gelcoat or wax?

    Work with a pH-neutral wash like August Race Boat Wash Pro at the appropriate dilution, allow a short dwell in shade, then agitate with a soft brush following the hull lines. Rinse low-pressure from the top down and finish with microfiber drying; reapply on stubborn patches rather than increasing aggression.

  • What dilution and dwell time produce streak-free cleaning for gelcoat after lake trips?

    For routine lake residue, start around 1:100 and dwell 2–4 minutes without letting the surface dry; tighten to ~1:50 for heavy fouling. Always work in manageable sections, maintain a wet edge, and use laminar sheeting plus microfiber drying to eliminate mineral spotting and streaks.

  • Are there eco-safe procedures for disposing rinse water when cleaning boats on a lake?

    Follow local regulations: minimize runoff, use the least concentration that achieves release, and avoid letting wash water enter storm drains or sensitive areas. Choose biodegradable, low-toxicity products and, where possible, perform primary rinsing in designated wash areas or use containment methods to protect freshwater ecosystems.

About the Author

August Race Team

August Race Team

The August Race professional team brings decades of marine industry expertise and product development knowledge.

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