RV Fiberglass & Gel Coat Repair in Jensen Beach
Cracks, chips, oxidation, and structural damage. We restore your RV's fiberglass finish and structural integrity on-site.
772-356-0328TL;DR
- Fiberglass crack repair, chip filling, and structural restoration
- Gel coat color matching and oxidation treatment
- Cost: $150 for small chips up to $3,000+ for major structural repairs
- Florida's UV and temperature cycling cause more fiberglass damage than any other climate
- On-site service. Call 772-356-0328 for a free estimate.
Your RV's fiberglass exterior is doing two jobs at once: protecting the structure underneath from the elements and making the rig look good. When the gel coat (that smooth, glossy outer layer) gets damaged, both jobs suffer. Cracks let water in. Chips expose the raw fiberglass to UV. Oxidation strips away the protective surface layer. In Jensen Beach, all three of these problems develop faster than anywhere in the northern half of the country.
Scott Marlins has been repairing RV fiberglass for over a decade. He works with gel coat color matching, structural fiberglass layup, and everything in between. Whether you've got a rock chip on the front cap from I-95 or a stress crack running along the sidewall, the repair process follows the same principles: clean the damage, prepare the surface, build it back up with the right materials, and finish it so the repair blends in.
Types of Fiberglass Damage
Gel coat chips are the most common and the least expensive to fix. Road debris, hail, and minor impacts knock off small pieces of the gel coat surface. The chip itself is cosmetic, but in Jensen Beach, an untreated chip exposes the underlying fiberglass to UV and moisture. Within a few months, the exposed area begins to degrade. We fill chips with color-matched gel coat paste, cure it, and sand/polish it smooth. Most chip repairs cost $150 to $300.
Stress cracks (spider cracks) form when the gel coat flexes beyond its capacity. They look like fine lines or webs on the surface. Common causes include road vibration stress on flat panels, thermal expansion/contraction cycling, impact or load stress near mounting points, and age-related brittleness from UV exposure. Surface stress cracks are cosmetic and can be ground out and filled. If the cracks extend through the gel coat into the fiberglass laminate, structural repair is needed first.
Structural fiberglass damage goes beyond the gel coat into the fiberglass mat and resin underneath. This happens from impacts (hitting a tree branch, backing into something), delamination that's progressed past the point of injection repair, and long-term water intrusion that's deteriorated the resin. Structural repairs require cutting out the damaged material, laying new fiberglass mat and resin, and rebuilding the surface with gel coat. These repairs range from $500 to $3,000+ depending on the area involved.
Oxidation isn't damage in the traditional sense, but it's destructive if ignored. The gel coat surface turns chalky, dull, and rough. This happens when UV radiation breaks down the gel coat's surface layer, exposing porous material underneath. In Jensen Beach, oxidation can start showing within 3 to 5 years on RVs stored in direct sun. Mild oxidation can be cut and polished back to a shine. Heavy oxidation may need wet sanding and compounding. Severe cases where the gel coat is thin may need a re-coating.
Pro Tip
Wax your RV's fiberglass at least twice a year. UV-protective wax is the gel coat's sunscreen. Without it, Jensen Beach's UV index of 8+ for 200 days per year eats through the gel coat surface at roughly 0.5 mil per year. A $50 wax job extends your gel coat's life by years.
Front and Rear Cap Repairs
The front and rear caps of most RVs are molded fiberglass pieces that take the most abuse. The front cap catches road debris, bugs, and wind-driven rain at highway speed. The rear cap gets sun exposure, splash-back from rain, and is often the first thing that shows stress cracks from chassis flex.
We repair all types of cap damage: rock chips (the most frequent, especially along the lower half of the front cap), stress cracks at mounting points and panel transitions, impact damage from branches, awnings, and parking mishaps, and delamination where the cap separates from the wall structure.
Cap repairs are visible, so cosmetic quality matters. We spend extra time on color matching and finish blending to make cap repairs as invisible as possible. On white and off-white caps (about 70% of what we see), color matching is relatively straightforward. On colored or metallic finishes, it takes more time and custom mixing to get right.

Pricing
| Service | Typical Cost |
|---|---|
| Gel coat chip repair (small, 1-3 chips) | $150 - $300 |
| Stress crack repair (per crack) | $200 - $500 |
| Front/rear cap repair (cosmetic) | $400 - $1,200 |
| Structural fiberglass repair (small area) | $500 - $1,500 |
| Structural fiberglass repair (large area) | $1,500 - $3,000+ |
| Oxidation restoration (per panel) | $150 - $400 |
| Full RV oxidation restoration | $600 - $1,500 |
Real Scenario
A customer in Palm City had a 2017 Tiffin Class A with a 12-inch stress crack on the front cap and multiple rock chips along the lower section. We ground out and filled the stress crack, repaired 8 rock chips, and color-matched the gel coat across the entire repair area. Total: $850, completed in one day. The dealer quote was $1,600 plus a 3-week wait.
Why Florida Accelerates Fiberglass Damage
UV radiation is the primary enemy of gel coat. Our UV index exceeds 8 for over 200 days per year. UV breaks down the polymer chains in gel coat resin, causing it to become chalky (oxidation) and brittle (leading to cracks). An RV that looks glossy and new in Michigan after 10 years will show visible oxidation after 4 to 5 years in Jensen Beach without regular waxing.
Thermal cycling creates stress cracks. The daily temperature swing between sun-exposed surfaces (160+ degrees F) and ambient temperature (85 degrees F) creates thermal stress in the rigid gel coat. Over thousands of daily cycles, this stress causes hairline cracks at flex points, mounting points, and areas of previous damage or repair.
Salt air adds another dimension. While salt doesn't attack fiberglass directly, it attacks the metal hardware (screws, brackets, trim clips) that mount to fiberglass surfaces. Corroding metal expands and creates stress points in the surrounding fiberglass, leading to cracks radiating outward from fastener locations.
Florida Factor
Consider ceramic coating instead of traditional wax for long-term UV protection in Jensen Beach. Ceramic coatings last 2 to 5 years per application versus 3 to 6 months for carnauba wax. The upfront cost is higher ($300 to $600 for a full RV), but the per-year protection cost is actually lower, and the UV resistance is significantly better.
Related Exterior Services
Call 772-356-0328 for a free estimate on fiberglass and gel coat repair.
Fiberglass & Gel Coat Repair Questions
How much does RV fiberglass repair cost in Jensen Beach?
Small chip and crack repairs start at $150 to $400. Larger structural repairs run $400 to $1,500. Full front or rear cap repair can cost $1,500 to $3,000+ depending on the damage extent. Gel coat color matching adds $50 to $150 to any repair. We provide exact quotes after seeing the damage.
Can you match my RV's gel coat color?
Yes, though an exact match on aged gel coat can be challenging. We mix custom gel coat colors to match your RV as closely as possible. On newer RVs (under 5 years), we typically achieve a near-invisible repair. On older RVs where the surrounding gel coat has faded from UV, the fresh repair may be slightly brighter.
What's the difference between gel coat repair and paint?
Gel coat is the original finish on fiberglass RVs. It's thicker and more UV-resistant than paint. When we repair gel coat, we're restoring the original finish system. Painting over fiberglass is a different approach that changes the maintenance requirements. For most repairs, matching gel coat gives a better long-term result.
Can stress cracks in fiberglass be repaired?
Yes. Stress cracks (also called spider cracks) are surface-level cracks in the gel coat caused by flex, impact, or thermal stress. We grind out the crack, fill with fiberglass-reinforced filler or new gel coat, and finish smooth. If the crack goes through the fiberglass laminate underneath, structural repair is needed first.
Does oxidation damage fiberglass or is it just cosmetic?
Oxidation starts as cosmetic (chalky, dull surface) but becomes structural if left untreated. The oxidized surface loses its UV protection, allowing UV to attack the fiberglass resin underneath. Over several years of neglect in Jensen Beach, oxidation can weaken the fiberglass itself. Catching and treating oxidation early keeps it a simple cosmetic fix.
How long does fiberglass repair take?
Small chip repairs take 2 to 4 hours including cure time. Crack repairs take 3 to 6 hours. Structural repairs take 1 to 2 days because the fiberglass layup needs proper curing between steps. Gel coat color matching and finishing adds time but produces a much better result.
Can you repair fiberglass on the front or rear cap of my RV?
Yes. Front and rear caps are the most common location for fiberglass damage because they take the most road debris and impact. We repair cracks, chips, holes, and structural damage on caps of all shapes and sizes. We can also repair or replace cap moldings and trim that have separated or broken.
Why does fiberglass crack more in Florida?
Florida's temperature extremes cause fiberglass to expand and contract daily. A surface that's 160 degrees F in afternoon sun cools to 75 degrees overnight. That 85-degree swing creates thermal stress in the gel coat. Over thousands of cycles, stress cracks form at points of flex or impact damage. Jensen Beach's UV also degrades the gel coat's flexibility, making it more brittle and crack-prone.
Fiberglass damaged?
From small chips to structural repairs. On-site service in Jensen Beach and Martin County.