Best Underwater Epoxies

1. Epoxy Putty, 17.6 oz. Pool Putty, Underwater or Above Fast Repair, Fix Leaks, Cracks, Filling, Sculpting, 2 Part Pool Epoxy Putty for Tile, Concrete, Fiberglass, Cement and Other Surfaces (White)

Fix your pool with Epoxy Putty. It’s a fast repair for leaks and cracks. This waterproof putty works above and below water.

This high-strength putty bonds to many surfaces. It creates a strong, lasting repair that won’t shrink or crack.

Simply mix, apply, and let it cure. This easy-to-use putty is perfect for all your pool and home repairs.

2. AQUABOND Swimming Pool Epoxy Repair Kit | Waterproof Epoxy Putty | Pool & Spa Repair | Underwater Sealant for Cracks & Leaks | Easy DIY | Concrete, Fiberglass, PVC | DMK-5000 50ml (1.7 oz) Kit | White

Fix your pool like a pro with the AQUABOND Swimming Pool Epoxy Repair Kit! This waterproof epoxy putty is your go-to for underwater repairs, meaning you can fix leaks and cracks without draining your pool.

It’s perfect for concrete, fiberglass, and PVC. Get heavy-duty performance and lasting results. This kit is your easy DIY solution for a perfect pool.

3. Tiepetly Pool Putty for leaks Underwater, 2 Part Epoxy Putty Set, Fix Leaks Cracks Underwater or Above, for Tile, Concrete, Fiberglass, Cement and Other Surfaces, 17.6oz

Tired of leaks? Tiepetly Pool Putty is your ultimate solution for waterproof repairs. It effectively seals cracks and stops leaks, giving you peace of mind.
This amazing putty works underwater! No need to drain your pool. It cures in water and won’t yellow, shrink, or sag.
Easy to mix and apply, this putty is perfect for DIYers. It’s a versatile repair kit for many surfaces.

4. Underwater Pool Putty Epoxy – 2 Part Set, Quick Set for Spa, Hot Tub, & Pool Leak Repair – Bonds to Fiberglass, Concrete & More – 8 oz Total, Easy DIY Waterproof Sealant – Work Like Magic

Underwater Pool Putty Epoxy is a quick-fix solution for leaks in pools, spas, and hot tubs. It comes in a 2-part set, ready to use right out of the box.

Mix the resin and hardener, apply it underwater or on dry surfaces, and watch it bond strongly to materials like fiberglass and concrete. It’s weatherproof and lasts through all seasons.

Perfect for DIY repairs, this putty is easy to use and cures without yellowing or shrinking. Florida pool experts recommend it for reliable, long-lasting results.

5. WEICON Repair Stick Aqua | 2-Component Special Adhesive epoxy Resin Fast Repair of radiators, Pool, Maritime and Underwater Areas | Industrial Grade (2oz (57g))

Introducing the WEICON Repair Stick Aqua, your go-to solution for fast and reliable repairs on challenging surfaces. This 2-component epoxy resin is engineered for exceptional performance, even in wet and underwater conditions.

This powerful adhesive is perfect for fixing cracks and holes. It works great in maritime, sanitary, and electrical applications. Get your repairs done quickly and effectively.

With a 15 mm adhesive gap capacity, it’s easy to use. The pot life is 15 minutes, and it works in temperatures from +10°C to +40°C. Experience 100% German Quality for all your repair needs.

6. All Fix H20 Underwater EPOXY Putty Pool Surfboard Kayak Marine Repair Cracks Leaks Seal Bond (8 oz. Unit)

All Fix H20 Epoxy Putty is your go-to solution for quick and permanent repairs. It’s perfect for fixing cracks, leaks, and seals on a variety of items.

This amazing putty works underwater, making it ideal for pools, surfboards, kayaks, and marine gear. It hardens to a rock-solid finish that you can drill, sand, or even sculpt. Plus, you can tint it to any color you need!

It sticks to almost anything, including concrete, tile, plastic, and metal. Get yours in 4 convenient sizes to tackle any job, big or small.

7. STAR BRITE Epoxy Putty Stick – Quick, Versatile, Permanent Repairs for Boat Hulls, Decks, Pools, Spas, Hot Tubs, and More, Including Use Underwater

STAR BRITE Epoxy Putty Stick is your go-to for quick, permanent repairs. It’s perfect for boats, pools, spas, and more. Works underwater too!

Mixes in one minute and sets in five. Bonds to fiberglass, wood, metal, and plastics. Ready for sanding or painting in just one hour.

High-density durability handles heat and pressure. Compact size fits any repair kit. Trust STAR BRITE for superior quality since 1973.

8. Pool Putty – 2 Part Epoxy Pool Putty for Leaks Underwater or Above, 10oz Pool Leak Sealer for Fixing Leaks, Cracks, Epoxy Pool Repair Kit for Tile, Concrete, Fiberglass, Cement and Other Surfaces

Pool Putty is a 2-part epoxy that fixes leaks and cracks fast. It works underwater or above, so no need to drain your pool. This durable solution keeps your pool leak-free and ready for fun.

It’s easy to use—just mix, apply, and let it cure. The included spatula makes blending simple. No special tools or skills are needed.

This versatile putty works on tiles, concrete, fiberglass, and more. It’s economical and perfect for DIY repairs. If you’re not happy, reach out for help.

9. System Three Submarine Underwater Epoxy Paste Adhesive, 8oz Kit

System Three Submarine Underwater Epoxy Paste Adhesive is a versatile epoxy that bonds to wet surfaces. It works even when objects are completely submerged in water.

Use it on concrete, wood, metal, and more. It’s great for patching holes or filling cracks in boats and pools.

Easy to mix, sands smoothly, and cures in cold temperatures. Perfect for underwater repairs.

10. AQUABOND Underwater Pool and Spa Potting Kit | Waterproof Pool Light Potting Epoxy | Electrical Conductive Resin for Lighting Fixtures | Niche Potting Kit | DMK – 1000 (1.7 oz)

The AQUABOND Underwater Pool and Spa Potting Kit is a waterproof solution for sealing electrical connections in pools, spas, and fountains. It’s UL listed and meets National Electric Code standards, ensuring durable protection against water damage.

This all-in-one kit includes a 50ml potting compound, dispensing gun, and static mixer tips. Its Aqua Blue color makes it easy to spot properly sealed areas.