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Boats in Grand Haven, MI, face steady exposure to sun, moisture, and abrasive lake elements that gradually wear down gelcoat. When oxidation becomes severe, or surface damage runs deeper than buffing can correct, sanding and wet sanding restore the hull to a smooth, even finish. These corrective methods level imperfections, remove heavy oxidation, and refine the surface so the gelcoat accepts polishing and waxing more effectively. Wet sanding is especially valuable for removing deeper scratches, dock rash, and stubborn chalking that standard correction cannot resolve. By gradually refining the surface with controlled abrasion, the hull regains uniform texture, clarity, and shine that lasts through the boating season.
Sanding and wet sanding work well for older boats that have lost color depth or have inconsistent gelcoat quality from years of exposure. Lake Michigan’s sunlight and mineral-rich water accelerate fading and make imperfections more noticeable over time. Professional sanding removes damaged layers safely while preserving the integrity of the gelcoat. Once complete, the surface becomes an ideal base for polishing and waxing, so the restored finish stays brighter longer. Many boat owners choose wet sanding before listing a vessel for sale or preparing for a new season because the results dramatically improve overall appearance.

A gentle correction used for moderate oxidation, uneven shine, and shallow surface defects that need a controlled smoothing approach.
A deeper restoration for heavily oxidized panels and widespread surface damage that requires multiple grit stages for refinement.
Focused treatment on localized scratches, dock rash, or scuff marks where a full hull sanding is unnecessary.
A multi-step correction that prepares heavily worn gelcoat for polishing by removing the damaged layer and creating a uniform surface.

Surface condition is evaluated to determine grit levels needed, then the hull is cleaned to remove debris and residue.

A series of marine-safe sanding steps gradually removes oxidation scratches and defects while leveling the gelcoat.

Water-assisted sanding smooths the surface further and eliminates sanding marks so the finish becomes clean and consistent.

After sanding, the hull is polished to restore shine, then waxed to protect the renewed surface from UV rays and lake exposure.
The hull regains a smooth, even surface, so color depth and gloss return with more clarity.
Removing damaged gelcoat allows polishing and waxing to bond better, which extends the life of the restored finish.
Sanding eliminates inconsistencies that make paint or gelcoat appear patchy, especially under sunlight.
A clean, smooth hull shows proper maintenance and gives buyers confidence in the overall condition of the vessel.
If your boat needs sanding or wet sanding in Grand Haven, MI, contact Coastal Marine Detailing. Our team restores smoothness, eliminates damage, and brings back clean, refined gelcoat so your vessel looks its best on the water.
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