10 Best Pool Fiberglass Repair Kits 2025 in the United States

Epoxybond Pool Putty is a two-part epoxy putty designed for DIY repairs on swimming pools and spas, especially suitable for fiberglass and concrete surfaces. One of its biggest strengths is ease of use: the putty is hand-moldable, mixes simply in equal parts, and can be applied underwater without draining your pool. This makes it convenient for quick fixes on cracks, leaks, and even chipped tiles. The curing happens underwater and hardens firmly without shrinking or sagging, which speaks to its reliability and durability. It also maintains its color well over time, resisting yellowing, which helps keep repairs looking neat. The product is waterproof and versatile, able to bond securely to different materials.

While the curing time is effective underwater, it may take longer to fully harden compared to some fast-dry alternatives, which might be a consideration if you need very rapid repairs. The color options are limited to white or black, so perfect color matching could be a challenge if your pool surface has a different shade. However, for general pool repairs where function is more critical than exact color match, it performs admirably. Epoxybond Pool Putty provides a reliable and user-friendly solution for pool owners who want a long-lasting, waterproof repair without the hassle of draining water, especially if durable fixes on fiberglass surfaces are required.

The 3M Scotch-Weld Epoxy Adhesive 2216 is a versatile epoxy resin that adheres well to a wide range of materials including metals, masonry, wood, rubber, and most plastics. This makes it a reliable choice for various repair projects beyond just pool fiberglass. One of its standout features is its high strength and durability, making it capable of withstanding environmental aging and performing well in demanding conditions such as cryogenic applications without becoming brittle. This suggests it is highly durable for pool repairs as well.

Additionally, it offers up to 90 minutes of working time, allowing for adjustments before it sets, which can be quite user-friendly for intricate repairs. The fast heat setting is another advantage, achieving a full cure in just 30 minutes at 200 °F (93 °C), which can save considerable time in repair jobs.

However, there are some noticeable drawbacks. The epoxy is gray, which may not match the typical white or blue color of many pools, potentially making the repair noticeable. Also, it's important to highlight that this product is intended for industrial or occupational use only, and not for consumer sale or use. This might limit accessibility for everyday pool owners. The curing process involves heat, which may not be feasible for all users depending on their equipment. For those in need of a highly durable and strong adhesive for complex repairs and who have the tools to handle heat curing, this product could be a great fit. However, the color matching and industrial use limitations might make it less suitable for general consumer pool fiberglass repairs.

The Polymer World- Polyester Resin 3 Gallon Kit stands out as a versatile option for pool fiberglass repairs, and it’s also suitable for boats, cars, surfboards, RVs, canoes, jetskis, and bathtubs. This general-purpose marine fiberglass resin comes with a handy 2 fl oz bottle of MEK-P polyester resin catalyst, eliminating the need to purchase a separate hardener.

This product is particularly user-friendly due to its easy application process. It allows for fast wet out, meaning the resin quickly permeates the fibrous material, and can be applied using various methods such as spray-ups or hand layups. Additionally, the resin's excellent tackiness allows for easier layering and stronger adhesion, making it effective for more robust repairs.

The resin's ability to provide cleaner results, as it doesn't sag or flow on sloped surfaces and minimizes pattern print-throughs on gelcoat finishes, is a significant strength. While the teal color of the resin might not perfectly match every pool's fiberglass color, it’s a minor issue considering its broad usage scope. Durability-wise, the resin’s strong adhesion and resistance to sagging suggest a long-lasting repair solution. This kit is ideal for pool owners who require a versatile, easy-to-apply repair material, though color matching might need some consideration.