FGCI Gelcoat Kit for Fiberglass Boat Building, Repair, and Patching


The Perfect Gelcoat for Marine Fiberglass Polyester Boats






High Quality Marine Grade Fiberglass Gelcoat

FGCI Marine Grade Gelcoat is a high-performance gelcoat that is widely used in various industries. It is a polyester based resin that is specifically designed to protect the surface of various materials from damage caused by environmental factors such as water, sunlight, and harsh chemicals.

Our Gelcoat is known for its excellent adhesion properties and is easy to apply. It provides a smooth, glossy finish that is resistant to fading and discoloration. Additionally, FGCI Gelcoat is formulated to be easy to sand, buff, and polish, ensuring that the surface of your project looks great and lasts for years to come. Whether you’re building a new boat, repairing an existing one, or working on any other project that requires a durable and long-lasting finish, FGCI Gelcoat is the ideal choice.

MACT Compliant

Our gelcoat not only provides exceptional protection and durability to your boat, but it also exceeds MACT (Maximum Achievable Control Technology) Compliance. The main purpose of this compliance is the following:

  • The MACT standards are set by the Environmental Protection Agency (EPA) to limit emissions of hazardous air pollutants from various industries.
  • The use of gelcoat in boat building and repair can potentially emit hazardous air pollutants. However, with our products you can rest assured that you are exceeding the MACT Compliance standards.

Our gelcoat formula is specifically designed to emit fewer hazardous air pollutants during the curing process compared to traditional gelcoat formulas. This not only benefits the environment but also ensures the safety of boat builders and repairers who handle the product.

At FGCI, we are committed to providing environmentally-friendly and sustainable products to our customers without compromising the quality and durability of our marine coatings. Our Marine Grade Gelcoat is an exceptional example of our commitment to the environment and our customers.

Optimized Bonding Characteristics

Our Marine Grade Gelcoat utilizes optimized bonding characteristics to provide exceptional adhesion to various materials, including fiberglass, wood, and metal. Our gelcoat is formulated with specialized bonding agents that enable it to bond firmly to the surface, providing a smooth and durable finish. This optimized bonding characteristic of FGCI Gelcoat also allows for easier release from molds, making it easier to work with and ensuring that your project looks its best.

  • High Gloss: Designed to retain its shine for years to come
  • Superior Durability: Able to resist fading, cracking, and peeling under harsh environmental conditions
  • Optimized Performance: The optimized bonding characteristics in FGCI Gelcoat contribute to its durability and attractive finish
  • Longest Lasting: Provides a long-lasting finish that is both attractive and durable, and ensures that your project will look great and last for years to come

Improved Anti-Sag and Anti-Cracking Qualities

Anti-sag and anti-cracking qualities are essential factors in gelcoat applications. Anti-sag refers to the ability of a gelcoat to maintain its shape and thickness without sagging or drooping during the curing process. It is important to prevent unwanted distortions, bubbles, and deformations on the surface of the material. Anti-cracking, on the other hand, refers to the ability of a gelcoat to resist cracking or crazing over time due to stress, temperature changes, or environmental factors. It is essential to provide a long-lasting and durable finish that can withstand wear and tear.

FGCI Gelcoat has improved anti-sag and anti-cracking qualities, making it an industry leader in gelcoat technology. Our gelcoat formulation is specifically designed to prevent sagging or drooping during the curing process, ensuring a smooth and even finish. The improved anti-sag characteristics of FGCI Gelcoat also allow it to be applied to vertical surfaces without sagging or dripping, making it easier to work with and ensuring that the application is more precise.

Additionally, FGCI Gelcoat’s improved anti-cracking qualities ensure that it is resistant to cracking and crazing over time. This means that your project will maintain its durability and appearance, even under harsh environmental conditions. By choosing our gelcoat, you can be confident that you are using a product that is both high-performance and long-lasting.

Industry Leader in Gelcoat Technology

FGCI Gelcoat has become an industry leader in gelcoat technology due to our commitment to high-quality formulations and exceptional performance. We continuously invest in research and development to improve our gelcoat’s properties and provide our customers with the best products available. Our dedication to MACT compliance, optimized bonding characteristics, and improved anti-sag and anti-cracking qualities sets us apart from our competitors and makes us a trusted choice for gelcoat applications.

FGCI Gelcoat has been widely used across various industries, such as marine, automotive, aerospace, and construction, to provide a long-lasting and durable finish that can withstand harsh environmental conditions. Here are some examples of how FGCI Gelcoat has been used in different industries:

  • Marine Industry: FGCI Gelcoat is used to coat boats, yachts, and other watercraft to protect against water, UV rays, and salt corrosion.
  • Automotive Industry: Our gelcoat is used to create custom finishes and bodywork, providing a high-gloss, scratch-resistant surface.

No matter the industry or project, FGCI Gelcoat provides exceptional performance and durability, making it the ideal choice for any application that requires a high-quality finish that can stand up to the toughest environmental conditions.

Certified for Food Grade Use

Additionally, our gelcoats are certifiable for food-grade use. All certifications have to be done by the end user. 

With FGCI, you can rest assured that your batch will be within specs every time, with the same color, viscosity, strength and application characteristics as you would expect from a high quality product. After all, we haven’t been in business for over 60 years without ensuring our quality standards are the highest, and accompanied with the best customer service! 

Try Some Today!

If you’re looking for a gelcoat that will provide exceptional performance and a high-quality finish, FGCI Gelcoat is the perfect choice. Whether you’re working on a boat, car, airplane, or other project, our gelcoat will provide a long-lasting, durable finish that will look great for years to come. With our commitment to quality and customer satisfaction, you can trust that you’re using the best product available. We encourage you to try FGCI Gelcoat for your next project and experience the difference for yourself.

FGCI’s Gelcoats are defined by the base unsaturated polyester resins. We offer only the highest grades of Gelcoats specifically based on Ortho, ISO, and NPG resin systems. The relative percentages of these resins in the Gelcoat determine the final properties of the product. Such as:

  • Weatherability
  • Color Stability
  • Water/Osmosis Resistance
  • Durability
  • Chemical Resistance
  • UV Light Stability
  • Ease of Application

FGCI’s high level ISO/NPG resin based Gelcoat, composed of the highest quality pigments, will provide the best combination of the above-mentioned properties.


Catalyst Concentration Chart - Resins and Gelcoat

Gelcoat Instructions


Original Exterior Gelcoat Instructions


Materials Needed:


  1. Mix & Measure Buckets
  2. Gloves
  3. CC Cups
  4. MEKP
  5. Mixing Sticks
  6. Spray Gun
  7. Depth Gauge
  8. Sanding Aid (not for use in a mold)


Step 1: 

The application site should be wiped clean of contaminants such as dust and debris. If coating a mold, the mold must be waxed, buffed, and prepped prior to catalyzing the Gelcoat.


Step 2: 

Gelcoat must be stirred/agitated, preferably with use of a mechanical agitator. Be careful not to whip air into the Gelcoat.


Step 3: 

We recommend a catalyst loading of 1.5 to 2.5% MEKP with a working surface and Gelcoat

temperature of about 77° F. Please refer to the Catalyst Concentration Chart for quantities. Mix Thoroughly.


Step 4:

For best results, Gelcoat should be sprayed on to the application substrate or mold at about 18-20 mils (measured using a Mil Gauge) in order to achieve a final optimum cured Gelcoat thickness of 18 to 22 mils.


Step 5: 

A second coat can be applied prior to completing the cure of the initial coat, unless the Gelcoat contains Wax.


Step 6: 

The coating should be cured before sanding and buffing. Allowing it to cure overnight is preferred.


Step 7: 

Refer to additive chart for quantities of SandingAid for use in final coat/post mold/out of mold applications.


Clean Up Procedure:


Cleaning FGCI Gelcoat: Use Acetone to clean spray equipment, brushes, and rollers. A small bucket of solvent can be used to clean tools and spray nozzles.


PLEASE NOTE: This information is provided in good faith and correct to the best of our knowledge. No warranty, guarantee, or representation is made as to the sufficiency of the information for the safe use of the product, nor to relieve the end user of any Federal, State, or Local regulatory responsibility.



  1. Charlie Norris

    “I love fiberglass coatings. They have great products and excellent advice. I'm trying to open a boat repair shop in St . Mary's, GA and my supply WILL come from fiberglass coatings. When I lived in the Fl. Keys for 36 years and worked for a towing and salvage Co for 15 years all our supplies came from Fiberglass coatings. Great service and never were disappointed. Keep up the great job everyone.”
  2. Brian Lewis

    “The staff are very knowledgeable and friendly Have always gotten the right stuff for the right job. Pat,mark,Colby,Ryan your the best. Pat is the walking encyclopedia of FGCI.”
  3. Justin Lammers

    “Been working on a skiff project and using all FGCI products. They came highly recommended by my friends who are boat builders. It is the highest quality resins, glass, and gelcoat for the money. They made it really easy for a newer person to boat building. The customer service is phenomenal and they are always knowledgeable and ready to help with any questions I had.”