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.
Burlington Wet Sanding
Wet sanding is a multi-stage correction technique that removes oxidation, chalking, and surface imperfections from boat gelcoat by using fine-grit sandpaper and water to level the topcoat and prepare the surface for polishing and protection.
Boat owners in Burlington face a particular challenge: the combination of lake exposure, seasonal weather swings, and UV radiation leaves gelcoat vulnerable to oxidation and a chalky, faded appearance. Many owners recognize that their boat's shine has diminished but are uncertain whether the damage is permanent or whether restoration is worth the effort. GTHN Boat Polishing addresses this problem directly through professional Burlington wet sanding, a service that targets the root cause of dull, weathered gelcoat rather than simply masking it with wax.
The Problem: Why Gelcoat Deteriorates in Burlington
Gelcoat is a hard, protective outer layer on modern fiberglass boats, but it is not immune to the elements. In and around Burlington, where boats are stored near Lake Ontario and subjected to freeze-thaw cycles, salt spray, and intense summer sun, gelcoat oxidizes over time. The result is a white or gray chalky film on the surface, loss of gloss, and a boat that looks years older than it actually is. When a boat owner runs their hand across the hull, they feel grit rather than smoothness.
Standard washing and waxing do not reverse this process. Oxidation has already chemically altered the gelcoat surface, and superficial treatments leave the underlying damage intact. Many boat owners assume restoration requires expensive, invasive fiberglass work or that they simply need to accept a dull finish as part of boat ownership in this climate.
GTHN's Approach: Burlington Wet Sanding and Multi-Stage Correction
GTHN Boat Polishing tackles oxidized gelcoat using a structured, evidence-based method. The process begins with a thorough hull and deck decontamination wash to remove loose debris, salt, and grime. This foundation step is critical because any particles left on the surface during sanding will cause scratches and uneven results.
Once the boat is clean and dry, technicians perform wet sanding using progressively finer grits of sandpaper, typically moving from 600 to 1000 to 1500 grit depending on the depth of oxidation. The "wet" part is essential: water lubricates the sandpaper, reduces friction, prevents heat buildup that can damage gelcoat, and allows the technician to see the surface clearly as they work. This method levels the oxidized layer and reveals fresh gelcoat beneath.
After wet sanding, the boat undergoes machine polishing with specialized marine compounds and pads to further refine the surface and restore clarity. The final step is application of a durable ceramic boat coating, which bonds to the restored gelcoat and provides lasting UV protection, water beading, and gloss retention. Because GTHN operates as a mobile service, this entire process happens at your marina, dock, or storage facility in Burlington-no need to trailer your boat elsewhere.
Results: Measurable Restoration of Appearance and Value
A boat that has undergone professional wet sanding by GTHN typically shows a 70 to 90 percent improvement in gloss and clarity, depending on the severity of initial oxidation. Owners report that their hull looks "new again" and that the improvement is immediately visible from 10 feet away. More importantly, the restoration translates to tangible benefits: a boat with restored shine commands better resale value, shows respect for the investment, and requires less frequent touch-ups because the ceramic coating protects against future oxidation.
One practical consideration: wet sanding is labor-intensive and takes time-often a full day or more depending on boat size and hull condition. GTHN's transparent approach means you understand upfront why the work takes as long as it does and what you are paying for. There are no shortcuts that deliver genuine results, and rushing the process leads to uneven finish or incomplete oxidation removal.
For Burlington boat owners who value their watercraft and want to restore appearance without replacing the boat, wet sanding paired with ceramic coating represents the most effective route. The method is proven, non-invasive, and produces results that owners can see and feel immediately.
If your boat's gelcoat has lost its shine and you are considering restoration, reach out to GTHN Boat Polishing. Share photos of your boat's current condition and your location in Burlington or the surrounding region, and the team will evaluate whether wet sanding is the right fit for your vessel and provide a clear picture of what to expect.
Frequently Asked Questions
What is the difference between wet sanding and regular polishing?
Regular polishing removes light oxidation and restores gloss through abrasive compounds and pads, but it does not level the gelcoat surface itself. Wet sanding removes a thin layer of oxidized gelcoat using progressively finer sandpaper and water, preparing the surface for polishing. Wet sanding is necessary when oxidation is deep or chalking is severe; regular polishing alone cannot reverse this damage.
How long does wet sanding take on a typical boat?
A full wet sanding job typically takes one full day to one and a half days depending on hull size, oxidation depth, and surface area. GTHN performs the work on-site at your Burlington marina or dock, so you can plan accordingly. The timeline reflects the care required to sand evenly and achieve a smooth, professional finish.
Is wet sanding safe for older fiberglass boats?
Yes, when performed correctly. Wet sanding is gentler than dry sanding because water prevents heat buildup and friction damage. However, the process does remove a thin layer of gelcoat, so it is not suitable for boats with thin or compromised gelcoat. GTHN inspects your boat before recommending wet sanding to confirm the gelcoat thickness and condition.
How much does wet sanding cost in Burlington?
Cost varies based on boat size, hull condition, and oxidation severity. GTHN provides transparent quotes after evaluating your boat in person. Contact the team with photos and details about your vessel to receive a professional estimate.
How long does the finish last after wet sanding and ceramic coating?
A ceramic boat coating typically provides 2 to 3 years of protection when properly maintained with occasional rinses and decontamination washes. Water beading and gloss gradually diminish over time, but the boat is far more resistant to oxidation and UV damage than an uncoated hull. GTHN can discuss maintenance schedules to keep your boat protected.
Can I use my boat the same day after wet sanding?
It depends on whether a ceramic coating is applied. If wet sanding is followed by ceramic coating, the boat typically needs 24 to 48 hours before water contact to allow the coating to cure fully. GTHN advises you on curing time and safe handling once the work is complete.
Do I need wet sanding if my boat is not heavily oxidized?
Not necessarily. Light oxidation and fading may respond well to a professional polish and ceramic coating without the expense of wet sanding. GTHN evaluates your boat's condition and recommends the most appropriate service, whether that is wet sanding, polishing, or maintenance washing alone.

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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