Can gelcoat repair make damage invisible?

On most repairs, yes. Good color match and careful wet-sanding produce a repair you cant spot from 3 feet away. Very light-colored hulls (pure white) are easiest; metallic and deep-color finishes are more challenging.

How long does gelcoat take to cure?

Initial cure happens in 1-2 hours. Full cure and maximum hardness takes 24-48 hours depending on catalyst ratio and temperature. We sand and polish once full cure is confirmed.

Is spider crack repair permanent?

When done properly, yes. The critical step is grinding the cracks fully out so the new gelcoat bonds to solid material. Surface-only repairs come back within a season because the crack was never removed.

What is the difference between gelcoat and paint repair?

Gelcoat is the original factory colored layer. Paint (like Awlgrip) is applied later as a refinish. Gelcoat repair requires matching pigments; paint repair requires matching the paint system. Different skill sets, different materials.

Boat Gelcoat Repair in Miami

Name: Boat Repair Miami
Address: Miami, FL, US
Telephone: (305) 290-2701

Spider cracks, chips, scratches, color matching, wet-sanding, and polish restoration

Request Service Call (305) 290-2701

Miami Gelcoat Specialists

Gelcoat damage is usually small but extremely visible. One dock rash line on the rail cap ruins the look of an otherwise clean boat. The good news: quality gelcoat repair makes the damage disappear. The trick is color matching and blending the repair into the surrounding surface so you cant see where old ends and new begins.

(305) 290-2701

Gelcoat vs. Fiberglass Repair

Gelcoat is the outer colored layer of a fiberglass boat, typically 0.020 to 0.030 inch thick. Gelcoat repair handles cosmetic damage only: spider cracks, chips, scratches, and surface damage where the fiberglass underneath is fine. When damage goes through the gelcoat and into the fiberglass laminate, it becomes a fiberglass repair job. We do both.

Common Gelcoat Damage We Fix

Spider cracks: Fine crazing radiating from hardware, stress points, or deck fitting pad eyes. Usually cosmetic but sometimes signals flex issues underneath.
Dock rash: Rail cap and rub rail scrapes from dock contact. Most boats get this eventually.
Chips and dings: Anchor strikes, dropped tool marks, gunwale dings from boarding.
Scratches: Everything from fingernail-width to cleat-strike-deep.
Stress cracks at hardware: Around cleats, stanchions, rail bases, swim platforms.
Blemishes and holidays: Original manufacturing defects that become visible over time.

Color Matching

Color matching is where most DIY gelcoat repairs go wrong. Boat white is never just white. Every manufacturer blends slightly different pigments, and Miami UV fades gelcoat unevenly depending on exposure. Our shop maintains a color-matching inventory from Spectrum, Evercoat, and Mini-Craft gelcoat systems, tinted in small batches to match the actual current color of your hull (not the original factory color, which no longer exists on a sun-aged boat).

Repair Process

Clean and assess: Wax and wash residue removed, damage depth checked.
Grind and prep: Damaged gelcoat ground back to create a clean repair bed.
Fill: Matched gelcoat paste applied in layers, each layer cured properly.
Wet sand: Progressive grit from 320 up through 2000, keeping the repair below surrounding gelcoat until the final pass.
Buff and polish: Compound, polish, and wax to blend the repair into surrounding gloss.

Spider Crack Repair

Spider cracks often fool people into thinking the repair is easy: just fill the crack. Wrong. Proper spider crack repair requires grinding the cracks out fully (they usually run deeper than they look), reinforcing underneath if the crack came from flex, and then filling, sanding, and blending. Done wrong, the cracks come right back.

Gelcoat Restoration vs. Repair

For whole-hull oxidation and dullness (not localized damage), see our boat detailing service, which covers compound, polish, and wax restoration of existing gelcoat. Gelcoat repair is for specific damaged areas that need new material, not full-hull cosmetic work.

Ready for gelcoat repair? Call (305) 290-2701 or request service.

Know the Signs

Signs You Need Gelcoat Repair

If you notice any of these warning signs, contact our team right away. Early diagnosis saves you time and money on repairs.

Spider cracks around cleats, stanchions, or hardware

Dock rash on rail cap or rub rail

Chips exposing white (lightly damaged) or gray (fiberglass) underneath

Scratches from cleat strikes, anchor drops, or debris

Stress cracks spreading from deck hardware

Gouges on rub rail or strake

Original blemishes becoming more visible with age

Previous DIY repairs that dont blend with surrounding hull

Our Process

Our Gelcoat Repair Process

Assessment

We check damage depth to confirm it is gelcoat-only and not deeper fiberglass work.

Color Match

Gelcoat paste tinted in small batches to match your actual hull color, not the original factory color.

Fill & Cure

Repair built up in layers, each layer cured before the next.

Sand & Polish

Progressive wet-sanding, compound, polish, and wax to blend the repair invisibly.

Miami Gelcoat Specialists

Miami Gelcoat Needs Careful Matching

Miami sun fades gelcoat unevenly. A south-facing deck surface looks noticeably lighter than a shaded transom after a few seasons, even on the same boat. Our color-matching process tints small batches to match the actual current hull color rather than the original factory spec. That is why our repairs disappear into the surrounding gelcoat instead of showing up as bright white patches on a sun-aged hull.

Why Choose Us