Structural Fiberglass Repairs

Restoring load-bearing strength and safety to boats, RVs, trailers, and industrial systems.

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Advanced Restoration

Introduction To Structural Fiberglass Repairs

Structural fiberglass repairs address load-bearing failures, water intrusion, compromised laminates, and other serious issues that threaten the integrity of a vessel, vehicle, or built system. Hilles Tub and Shower Repair provides expert structural fiberglass repair services for boats (transoms, stringers), RVs and motorhomes (panels, supports), trailers, industrial tanks, decks, and commercial fixtures.


Serving Mount Joy, PA and the surrounding region since 2005, we combine precise diagnostics, multilayer lamination techniques, and certified materials to return damaged structures to service.

Ensure Safety

Why Structural Repairs Are Critical

Structural damage is more than cosmetic—compromised laminates can lead to catastrophic failure. For boats, transom failures or rotted stringers can endanger occupants. For RVs and trailers, structural panel failures weaken the chassis and reduce safety.


Ignoring structural defects risks larger, costlier repairs and potentially hazardous situations. Properly executed structural fiberglass repairs restore strength, water resistance, and longevity.

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Common Structural Issues We Address

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Transom and stringer failures in boats due to water intrusion

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Soft spots and delamination in deck areas

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Cracked or compromised RV body panels and load-bearing areas

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Corroded or cracked fiberglass tanks and panels in industrial equipment

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Impact damage to trailers and truck components requiring laminate rebuilds

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Bulkhead and keel repairs for marine vessels

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Fractured fiberglass bumpers or structural fairings on vehicles

Key Benefits Of Professional Structural Fiberglass Repair

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Restores structural integrity and safety

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Prevents further water ingress and rot

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Extends service life and preserves asset value

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Uses proper materials and techniques that meet manufacturer-standard strength

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Provides documented repairs for resale or insurance claims

Our Process

How Structural Repairs Are Performed

Refinishing Process
1

Comprehensive
assessment

We inspect for rot, water intrusion, bond failure, and underlying causes—often employing moisture meters and targeted access cuts.

2

Remove compromised
material

We remove degraded laminate and any contaminated core or substrate materials down to sound laminate.

3

Core replacement
(if required)

For sandwich constructions with foam or plywood cores, we replace cores with approved materials suited to the application (marine plywood, closed-cell foam).

4

Multi-layer
lamination

Using oriented fiberglass cloth layers and proper resin systems, we rebuild structure to engineered strength specifications, paying attention to fiber direction and overlap.

5

Fairing and
finishing

Rebuilt areas are faired to contour, sanded, and prepared for gelcoat or protective topcoats.

6

Gelcoat and
protective coating

We apply matching gelcoat or paint systems to restore waterproofing and appearance.

7

Load testing
and inspection

Where applicable, we verify load-bearing capacity and inspect for leaks.

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Materials & Methods

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Polyester and epoxy resin systems selected based on substrate and service environment

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Woven fiberglass cloth and stitched fabrics for high-strength laminates

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Compatible cores (marine plywood, closed-cell foam) for sandwich structures

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Structural adhesives and mechanical fasteners where required

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Proper curing conditions and post-cure treatments for optimal laminate strength

Application & Case Studies

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Boat Transom Rebuild

We replaced a water-damaged transom by removing rotten core, installing marine-grade plywood core, laminating multiple biaxial cloth layers, and finishing with color-matched gelcoat. The boat returned to safe operation and passed sea trials.

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RV Body Panel Repair

An impact-damaged lower sidewall was re-laminated, faired, and refinished, restoring aerodynamic profile and preventing further water intrusion.

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Industrial Tank Repair

We repaired a cracked fiberglass chemical tank with a proven laminate schedule and applied a chemical-resistant topcoat to ensure longevity.

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Cost & Time Considerations

Structural repairs are scoped according to damage. Rebuilding with proper cores and multiple laminate layers generally requires more time and materials than cosmetic gelcoat repairs. We provide detailed written estimates and timelines. For insurance-related work, we document steps and provide photographs.

Common QUestions

Frequently Asked Questions

  • Can you make a repaired area as strong as the original?

    When repaired using appropriate core materials, fiber orientation, and resin systems, a properly executed structural repair will meet or exceed original strength parameters. Our repair schedules follow best practices to restore equivalent load capacity.

  • How long will the repair last?

    With correct materials and proper adhesion to sound substrate, structural repairs can last the life of the vessel or vehicle. Maintenance and avoiding subsequent water intrusion are key to longevity.

  • Do you offer emergency structural repairs?

    Yes. For safety-critical failures we offer urgent assessments and can perform temporary or permanent structural repairs depending on the situation.

  • Can you work with insurance adjusters?

    We can provide documentation, photos, and detailed repair scopes to assist with insurance claims. Communication with adjusters is available upon request.

Preparing For A Structural Repair Appointment

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Provide access to the damaged area and any relevant maintenance records

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For boats, arrange haul-out or provide dock access details

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For RVs and trailers, provide vehicle location and any mobility constraints

Warranty & Documentation

Structural repairs come with workmanship warranties. We document repairs thoroughly and provide post-repair maintenance recommendations. For commercial and industrial clients, we can provide detailed reports and test results.

Get in Touch

Contact & Scheduling

For structural fiberglass repairs—boats, RVs, trailers, tanks, decks, or industrial panels—call Hilles Tub and Shower Repair. We’ll schedule a comprehensive assessment, deliver a transparent estimate, and restore your asset with expert workmanship.


Call to schedule a structural assessment and repair estimate. For urgent structural failures, contact us immediately for emergency fiberglass repair service.

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