What Should I Know About Fiberglass Repair?

Painted Rhino
June 20, 2023

Fiberglass is a well-known and versatile material used extensively in various industries due to its durability and flexibility. However, even some of the toughest and most durable materials will eventually succumb to wear and tear or simply to time. When your fiberglass components start showing signs of damage, it’s essential to understand what fiberglass is and the basics of fiberglass repair. Let’s dig into fiberglass repair, focusing on the critical aspects you need to understand.

What is Fiberglass?

Fiberglass, a common material used in countless applications, is a specific type of reinforced plastic. Its core ingredients are fine glass fibers, often woven and embedded in a resin matrix, resulting in a composite material that is both lightweight and incredibly strong. Notably celebrated for its high strength-to-weight ratio, fiberglass is also highly resilient to weather conditions and exposure to the elements. It features chemical and heat resistance as well.

Fiberglass can be molded to nearly any complex shape while maintaining its structural integrity, making it a great choice for applications like boat hulls and car body panels. It’s even used in swimming pools, storage tanks, and aircraft.

Signs Your Fiberglass Needs Repair

Being able to tell when your fiberglass needs repair is one of the most significant aspects of fiberglass maintenance and can help enhance its durability and effectiveness. Some of the most common signs of fiberglass damage include:

  • Visible cracks
  • Holes
  • Blistered surface
  • Discoloration or fading of the color
  • A warped or uneven surface
  • Soft or spongy feel

These are all clear indications of structural damage to the fiberglass that must be repaired. They can happen after long periods of harsh use or exposure due to water infiltration from previously unrepaired damage. The appearance of any of these signs will generally mean professional fiberglass repairs are needed.

What To Know About The Fiberglass Repair Process


Before any repairs can occur, a clean and dry surface will be needed. Loose material needs to be removed around the damaged area; then, it needs to be sanded down smoothly. Be sure to wear protective equipment to avoid skin and respiratory damage.


Fiberglass repair involves applying resin and fiberglass cloth layers to the damaged and prepped area. Each layer can fully dry and cure before the next one is applied.


Once the repair is completed, the area is finished by sanding smoothly and applying a top coat to restore the item's appearance.

The Advantages of Professional Fiberglass Repair

A clear understanding of fiberglass repair is essential to effectively maintain the longevity and functionality of your fiberglass items. If fiberglass items or structures need professional help, Painted Rhino is here to help. Contact us today and let us know how we can help you with your fiberglass needs.