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.
Simcoe Acid Wash
Acid wash treatment is a chemical decontamination process that removes oxidation, mineral deposits, and embedded contaminants from boat gelcoat and fiberglass surfaces. GTHN Boat Polishing applies this specialized technique across Hamilton, Burlington, Niagara, and the Greater Toronto Area to prepare hulls for restoration, ceramic coating, or final polishing. Understanding when and how this service fits into your boat's maintenance or restoration plan helps you make informed decisions about protecting your investment.
What Acid Wash Actually Does to Your Hull
This treatment dissolves and lifts fallout particles, salt deposits, and oxidized gelcoat that regular washing cannot remove. Because acid penetrates porous gelcoat surface layers, it reveals clean material underneath and restores the hull's true color and finish potential. The process is aggressive by design - it is not a routine wash, but a preparatory step that opens the surface for ceramic coating application, multi-stage polishing, or other restoration work.
Boat owners in Simcoe County and across the Golden Horseshoe region often discover during spring commissioning that their hull has accumulated years of airborne salt, brake dust, and industrial fallout. Acid wash removes these contaminants in a single, controlled treatment rather than through repeated polishing attempts that consume time and product.
Why Professionals Use This Before Ceramic Coating
Ceramic coatings bond to clean, bare gelcoat - not to oxidized or contaminated surfaces. If a hull is coated over existing oxidation or salt deposits, the coating fails prematurely or bonds unevenly, leaving protection gaps and uneven appearance. GTHN applies acid wash as a mandatory preparation step before ceramic boat coating application to ensure the sealant adheres uniformly and performs for years.
This is not optional when seeking durable protection. A boat owner who invests in ceramic coating expects that protection to last; skipping proper decontamination waste that investment. The acid wash process takes hours but prevents thousands of dollars in premature re-coating.
Timing: When Your Boat Needs This Service
Spring commissioning and pre-winter storage are the most common times to schedule this work. After months of winter storage or marina exposure, hulls accumulate contaminants that become visible once the boat is back in regular use. Early-season treatment prevents these deposits from bonding permanently and makes subsequent maintenance easier for the rest of the season.
Boat owners who frequent Simcoe area marinas and those moored in saltwater or high-mineral-content freshwater typically need this service every 2 to 4 years. GTHN's mobile service eliminates the need to haul your boat to a facility - the team arrives at your dock, marina, or storage location to perform the work on your schedule.
The Difference Between Acid Wash and Routine Detailing
| Aspect | Routine Wash and Polish | Acid Wash Treatment |
|---|---|---|
| Purpose | Remove surface dirt and light oxidation | Remove embedded fallout, salt, and deep oxidation |
| Aggressiveness | Gentle; safe for regular maintenance | Chemical; removes surface layer to reach clean gelcoat |
| Frequency | Every few months or as needed | Every 2-4 years or before major restoration |
| Result | Improved shine and cleanliness | Bare, decontaminated surface ready for coating or polishing |
Routine detailing preserves your boat's appearance between major treatments. Acid wash prepares the hull for transformative work - whether that is ceramic protection, multi-stage polishing, or restoration of severely oxidized gelcoat. Many boat owners in the Hamilton and Burlington areas use both services in sequence: acid wash followed by ceramic coating application, then routine detailing to maintain that protection.
Safety, Equipment, and Professional Application
Acid wash requires proper chemical handling, protective equipment, and knowledge of neutralization steps to prevent surface damage. The acid concentration must be controlled - too weak and contaminants remain, too strong and the gelcoat itself is compromised. GTHN's technicians are trained in these specifics and carry the equipment necessary to apply this treatment safely at your location.
Because this is chemical work, it is not a DIY project. Professional application ensures consistent results, proper safety protocols, and appropriate follow-up steps before the hull is ready for coating or polishing. When you schedule this service with GTHN, you are paying for expertise that protects both your boat and the technician performing the work.
If your boat shows signs of heavy oxidation, salt staining, or if you are planning ceramic coating application, acid wash treatment is worth exploring. GTHN Boat Polishing serves boat owners throughout the Greater Toronto Area, Niagara region, and surrounding communities. Reach out to discuss your hull's condition and whether this service fits your restoration or maintenance goals.
Frequently Asked Questions
What is the difference between acid wash and pressure washing for boats?
Pressure washing removes loose dirt and algae from the surface; acid wash dissolves and removes embedded contaminants like mineral deposits, salt, and oxidized gelcoat that pressure alone cannot lift. Acid wash is more aggressive and is used before major restoration or coating, while pressure washing is routine maintenance.
Will acid wash damage my boat's gelcoat if done wrong?
Improper acid concentration, incorrect application time, or inadequate neutralization can damage gelcoat. This is why professional application matters - GTHN technicians control chemical strength and neutralization to clean the surface safely without compromising the underlying material.
How long does the acid wash process take?
Acid wash typically takes 3 to 6 hours depending on hull size, condition, and contamination level. GTHN performs the work at your marina or storage location, so there is no transport time or facility scheduling delays.
Can I get acid wash service in Simcoe County?
Yes, GTHN Boat Polishing provides mobile acid wash and hull decontamination service throughout Simcoe County and the surrounding Golden Horseshoe region, including Hamilton, Burlington, and Niagara. The technicians travel to your boat.
Is acid wash necessary if I already have ceramic coating on my boat?
If your ceramic coating is intact and performing well, acid wash is not needed for maintenance. Acid wash is most valuable before initial ceramic application or when restoring a hull before re-coating.
What should I do after acid wash treatment?
After acid wash, the hull must be neutralized and rinsed thoroughly to stop the chemical reaction. At that point, the surface is ready for ceramic coating application, multi-stage polishing, or immediate use - depending on your restoration plan.
Does GTHN offer other hull preparation services besides acid wash?
Yes, GTHN specializes in multiple hull decontamination and restoration methods, including multi-stage gelcoat correction, ceramic coating application, and oxidation removal. Acid wash is one tool in their service menu designed to fit your boat's specific needs.

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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