10 Best Fiberglass Boat Repair Kits 2025 in the United States

The Polymer World Polyester Resin 10 Gallon Kit with MEKP is a versatile solution suitable for various applications, from boats to surfboards and even automobiles or bathtubs. One of its key strengths is the ease of application, allowing for quick wetting and spreading of the resin. This makes it ideal for both spray-ups and hand layups, catering to different repair or building needs.

The resin’s excellent tackiness is another advantage, as it remains sticky for a longer period, facilitating the application of multiple layers and enhancing adhesion strength. Additionally, the resin's superior formula ensures cleaner results, preventing sagging or flowing on sloping surfaces and minimizing pattern print-throughs on gelcoat finishes. This kit includes a 2 fl oz bottle of MEKP catalyst, which means you don't need to purchase a separate hardener, adding to its convenience.

The fact that it is marketed by a Florida-based business with over seven years of experience in the boating industry adds credibility. Despite these considerations, the Polymer World Kit appears to be a reliable and practical option for various fiberglass repair tasks.

The Polymer World Fiberglass Boat Repair Kit is a versatile and handy solution for various repair projects, including boats, automobiles, surfboards, RVs, canoes, and jetskis. One of its major strengths is the general-purpose marine fiberglass resin, which can also be used on non-marine items like bathtubs, making it quite versatile. The resin allows for fast wet out, meaning it's easy to spread and impregnates the fibrous material quickly, which is useful for both spray-ups and hand layups. This feature makes the application process more convenient for users who might not be professionals. Additionally, the resin has excellent tackiness, allowing for easier application of multiple layers, resulting in stronger adhesion and a sturdier repair job.

Another advantage is its cleaner results, as the resin won't sag or flow on sloping surfaces and helps minimize pattern print-throughs on gelcoat finishes, contributing to a more professional-looking repair. The kit includes MEK-P polyester resin catalyst, so you won't need to purchase a hardener separately, which is a nice convenience. Polymer World's extensive experience in the boating industry adds credibility to the product's quality, and their customer support can be beneficial for any issues or questions you may have.

On the downside, if you only need to perform small repairs, the 2-gallon quantity might be more than necessary, leading to potential wastage. Nonetheless, if you have multiple projects or larger repairs, this kit could be very cost-effective. The included fiberglass cloth is biaxial, which is great for adding strength but might be more than needed for very small or simple repairs. This kit is well-suited for those who need a reliable and durable solution for various repair projects, whether on watercraft or other fiberglass items.

The TotalBoat-409337 TotalFair Marine Epoxy Fairing Compound is an excellent option for those needing to repair fiberglass, wood, aluminum, and steel surfaces on boats and other watercraft. This gallon kit offers a high-strength, lightweight two-part epoxy filler that smooths and fills dents, holes, and gouges effectively. One of its standout features is the superb bonding capability, providing a permanent and waterproof finish without pinholes, making it suitable for both above and below the waterline repairs.

The improved formula allows for a hassle-free mixing process with a 1 to 1 mix ratio, simplifying the preparation as the blue and yellow components turn green when ready. The compound is also designed to be easily spread and feathered to a fine edge without sagging, even on vertical surfaces, which is a significant advantage for varied repair needs. Additionally, it cures quickly within 4 hours at 80°F, and the resulting surface sands easily, ready for painting with compatible primers and paints.

However, it's important to note that TotalBoat Gelcoat cannot be applied directly over this compound, necessitating an additional step of applying a 2-Part Epoxy Primer or TotalProtect first. While this product excels in many areas, potential users should be prepared for this extra step to ensure proper curing if using gelcoat. With options available in different sizes, including 2-pint, 2-quart, and 1-gallon kits, users have the flexibility to choose the amount that best suits their project needs.