Our Process

Restoring the SHINE of your boat
Step 1: Initial Wash
A decontamination wash is essential to start correcting the gelcoat by scrubbing/washing the boat to remove old waxes and dirt to prepare the surface for restoration.
Step 2: Oxidation Removal
If the boat has heavy oxidation, it will be wet sanded as needed, particularly if it leaves a chalky residue at first touch. This will be followed by compounding to reveal the glossy gelcoat underneath.
Step 3: Polishing
Polishing will eliminate any scratches or swirls left from compounding and provide a protective layer.
Step 4: Protection
Once compounded and polished, GTHN will apply a coat of wax, polymer sealant or ceramic coating to protect the finish.
Step 5: Maintenance
Routine maintenance is essential for preserving the gelcoat. Regularly washing the boat and reapplying protective sealants will help keep it looking its best.
Stoney Creek Acid Wash
Acid wash in Stoney Creek is a chemical cleaning process that removes oxidation, mineral deposits, and stubborn staining from a boat's gelcoat surface, restoring its original shine and preparing it for protective coatings. If you own a boat stored or docked in the Stoney Creek area-whether on the water year-round or seasonally-this service addresses one of the most common maintenance challenges boat owners face. GTHN Boat Polishing brings this specialized restoration work directly to marinas and docks throughout the Golden Horseshoe, including Stoney Creek and surrounding communities.
1. What Oxidation Does to Your Boat's Gelcoat
Gelcoat is the hard, protective outer layer of your boat's hull and deck-think of it as the boat's paint, but tougher. Over time, sun exposure, saltwater, freshwater minerals, and weathering break down the gelcoat's resin structure. This creates oxidation: a chalky, dull white or gray layer that builds up on the surface. Once oxidation takes hold, no amount of regular washing removes it.
In Stoney Creek, where boats face intense seasonal sun and variable water conditions, oxidation develops faster than many boat owners expect. The oxidized layer doesn't just look poor-it prevents protective coatings like ceramic finishes from bonding properly to the underlying gelcoat. GTHN Boat Polishing's acid wash process dissolves this oxidation chemically, exposing fresh, intact gelcoat beneath. This is essential prep work before any shine restoration or protective treatment.
2. How Acid Wash Differs from Other Cleaning Methods
Regular boat washing with soap and water removes surface dirt but leaves oxidation untouched. Power washing can damage gelcoat if pressure is too high. Polishing alone cannot remove heavy oxidation-it only masks the problem temporarily. Acid wash, by contrast, is a targeted chemical treatment that penetrates and dissolves oxidation at its source.
The process uses a pH-controlled acidic solution applied to the hull and deck. Because the chemistry is precise, it removes oxidation without eating into sound gelcoat. GTHN Boat Polishing technicians understand the balance required-too weak and the wash won't work; too strong and it damages the boat. This is why professional application matters far more than a DIY approach. After acid wash, the boat's surface is ready for multi-stage correction and polishing, or for ceramic coating application to seal in protection for months or years ahead.
3. When Your Boat in Stoney Creek Needs This Service
Several signs indicate your boat needs acid wash treatment:
- Chalky white or gray buildup on the hull that washing does not remove
- Dull, lifeless appearance even after polishing attempts
- Visible staining from mineral deposits or rust streaks
- Preparation before applying ceramic coating or other protective finishes
- Annual spring maintenance after winter storage or seasonal idle time
Boats moored or stored in Stoney Creek year-round typically benefit from acid wash every 12 to 24 months, depending on water chemistry and sun exposure. Seasonal boats may need it less frequently, but spring recommissioning is an ideal time to address oxidation before the boating season begins. GTHN Boat Polishing offers mobile hull and deck decontamination wash services that come to your location, so you do not need to haul your boat or spend time away from the marina.
4. What to Expect During and After the Process
A professional acid wash typically takes 4 to 8 hours depending on boat size and oxidation severity. GTHN Boat Polishing applies the solution systematically across the hull, deck, and topsides, allowing proper dwell time for the chemistry to work. The technician monitors the process closely, rinsing thoroughly with fresh water afterward to stop the reaction and neutralize any residue. Proper rinsing is critical-incomplete neutralization leaves the gelcoat vulnerable.
After acid wash, your boat's surface looks noticeably brighter and smoother. The shine may be matte at first, which is normal-the gelcoat is clean but unpolished. Many boat owners then proceed with multi-stage correction and polishing to achieve a high-gloss finish, or they move directly to ceramic coating application for long-term protection. Because acid wash removes contaminants and oxidation completely, any protective coating applied afterward bonds stronger and lasts longer. This is why GTHN Boat Polishing recommends it as a foundation step before major restoration work.
5. Why Professional Application Protects Your Investment
Boats represent significant financial and emotional investment for Stoney Creek owners. Rust streaks, oxidation, and dull finishes erode resale value and owner satisfaction. Choosing professional acid wash service preserves that investment in two ways: it restores appearance immediately, and it enables better protection going forward.
DIY acid wash kits exist, but they lack the precision, safety equipment, and neutralization protocols that professionals bring. A mistake-wrong concentration, uneven application, or incomplete rinsing-can damage gelcoat permanently. GTHN Boat Polishing's mobile service approach means technicians arrive with professional-grade materials and equipment, perform the work while your boat stays at your preferred location, and stand behind the quality of their work. When you invest in professional restoration, you invest in expertise that protects the boat itself.
If your boat shows signs of oxidation or dull finish, reach out to GTHN Boat Polishing to discuss whether acid wash service makes sense for your vessel. The team serves boat owners across Stoney Creek, Hamilton, Burlington, Niagara, and the Greater Toronto Area, bringing expert mobile detailing to your marina or dock. A straightforward conversation about your boat's condition and goals will clarify what restoration approach is right for you.
Frequently Asked Questions
How much does acid wash cost in Stoney Creek?
Pricing depends on boat size, hull condition, and oxidation severity. GTHN Boat Polishing provides custom quotes after learning about your vessel and current finish condition. Contact the team for a transparent estimate.
Will acid wash damage my boat's gelcoat?
When applied professionally with proper concentration and technique, acid wash removes only oxidation and contaminants without harming sound gelcoat. This is why professional application matters-technicians control the process to protect your boat while delivering results.
How long does the shine last after acid wash in Stoney Creek?
Acid wash alone restores shine but does not provide ongoing protection. To keep your boat looking its best, many owners follow up with ceramic coating or regular maintenance wash services. Ceramic coating can protect your boat for up to one year between services.
Can I do acid wash myself, or should I hire GTHN Boat Polishing?
DIY kits are available but lack professional-grade materials, safety protocols, and the expertise needed to avoid damaging your gelcoat. GTHN Boat Polishing brings mobile professional service directly to your location, ensuring proper technique and lasting results.

Customer Testimonials

Kevin D, Caledon
I couldn’t be happier with how the ceramic coating turned out on my boat! I was blown away and the boat looks awesome! The shine is incredible and I know it will last. GTHN did an amazing job! Highly recommended!

Jan P, Hamilton
I had GTHN polish my boat. He did a fantastic job! Upfront and honest, and worked very hard. I highly recommend them!

Chris B, Hamilton
It’s hard to find reliable people in this industry, but Neil was one of them. Price was fair, work was awesome, communication throughout was above and beyond. I will use GTHN again and would highly recommend if you found them, you do the same.

Phong T, Kitchener
This was the first time I worked with Neil and the experience was great. He came out to do a couple of test spots before we settled into a quote and the rest of the scheduling was just as easy. The end result was fantastic.
Definitely recommended!!! 🙂

Diego M, Toronto
I’m amazed with the work that was done. I highly recommend it 100%
Fast and best ever results. Thanks Neil for your time and effort.

Steve B, Hamilton
We are beyond happy with the work done on polishing the hull of our boat. Not only is the work amazing, but Neil went out of his way to get our boat ready on time for launching. Small touches like putting painters tape on the line separating the gel coat and bottom paint are appreciated. As is the extra time spent on trouble spots. Highly recommend GTHN Boat Polishing!
We Will Come To You!
Feel free to contact us with any questions regarding your boat! We would love to help!
GTHN Boat Polishing
info@gthnboatpolishing.ca – 289-698-5909
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