---
product_id: 138987846
title: "Pro Marine 5:1 Boat Epoxy Kit – Our Total Penetrating 1 Gallon Fast Hardener – Marine Grade Epoxy Clear with Pumps, it Repairs Wood, Aluminum, Paint, & Polyester Resin While Strengthening Fiberglass"
brand: "pro marine supplies"
price: "1399 Lei"
currency: RON
in_stock: true
reviews_count: 7
url: https://www.desertcart.ro/products/138987846-pro-marine-5-1-boat-epoxy-kit-our-total-penetrating
store_origin: RO
region: Romania
---

# Pro Marine 5:1 Boat Epoxy Kit – Our Total Penetrating 1 Gallon Fast Hardener – Marine Grade Epoxy Clear with Pumps, it Repairs Wood, Aluminum, Paint, & Polyester Resin While Strengthening Fiberglass

**Brand:** pro marine supplies
**Price:** 1399 Lei
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Pro Marine 5:1 Boat Epoxy Kit – Our Total Penetrating 1 Gallon Fast Hardener – Marine Grade Epoxy Clear with Pumps, it Repairs Wood, Aluminum, Paint, & Polyester Resin While Strengthening Fiberglass by pro marine supplies
- **How much does it cost?** 1399 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/138987846-pro-marine-5-1-boat-epoxy-kit-our-total-penetrating)

## Best For

- pro marine supplies enthusiasts

## Why This Product

- Trusted pro marine supplies brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Material Type:Fast Hardener





 | 

Size:Gallon Kit




























Our 521 Marine Epoxy Resin can be used with our 521 Fast or Slow Hardener, depending upon your application. 521 Marine Epoxy Resin bonds with fiberglass, metals, wood, and composite fabrics and features superb strength, durability, and moisture resistance. The 521 Epoxy cures to a high-strength solid, suitable for laminating, bonding, fairing, coating, and reinforcing. Pot life ranges from 12 minutes @ 70°F for Fast Hardener, to 30 minutes @ 80°F for Slow Hardener. Cures to a high-strength, moisture-resistant, light amber plastic solid that can be sanded and shaped easily, once cured. Self-leveling properties are ideal for coating and laminating. Viscosity is favored for wetting out fiberglass cloth and other reinforcement fabrics easily. Use this versatile epoxy resin with 521 fast or slow hardener to complete a number of boat building, repair, and restoration projects. Fast Hardener is a perfect selection for applications requiring quick working time and for use in cooler climates (recommended use 60-70°F), the 521 Epoxy Resin/Fast Hardener mixture remains workable to give you adequate time for application, and it speeds up cure time. The recommended temperature for use and dispensing via pump: 60-70°F Pot life @ 70°F: 12 minutes (Fast Hardener) Set time @ 70°F (thin film): 6 hours Cure time @ 70°F (thin film): 1 to 4 days Hardener Color: 521 Fast (Dark Amber) Slow Hardener is a perfect selection for applications requiring more working time and for use in warmer climates (recommended use 60-70°F) Minimum recommended temperature (Slow Hardener): 80°F - Slow Hardener buys you a little more working time in warmer temperatures that tend to reduce working time and speed cure time of epoxy resins. The recommended temperature for use and dispensing via pump: above 80°F Pot life @ 80°F: 30 minutes (Slow Hardener) Set time @ 80°F (thin film): 10 hours Cure time @ 80°F (thin film): 1 to 4 days Hardener Color: 521 Slow (Clear-Light Amber)

## Features

- 🏅 USA FACTORIES- Tackle your epoxy and fiberglass repairs with our #1 Complete Boat Epoxy, that withstands the test of time! We specialize in testing in our USA factories and we work hard so your product is right the 1st time!
- 🕸 EXCELLENT ADHESION- With the high strength and solid adhesion it makes this #1 for bonding, fairing, coating and reinforcing. A Hardy adhesion with no shrinkage, that allows you to sand without chipping or breaking off what you just applied. Stronger and better results without the harsh smell or shrinking Polyester, so your repair right the 1st time.
- 🌊 PERFECT VISCOSITY- Allows our Epoxy to easily flow and use just what you need, nothing more! It’s prime for warmer or colder temperatures. Allowing the fast resin to cure in 4-6 hours and the slow in 8-10. Just like all our epoxies this self levels and has been specifically designed for Marine usage.
- 💎 CURES HARD- Boats are constantly getting costly dings and dents, with a little TLC & this 521 Epoxy it will have your boat gliding in the water & saving you time and money in Marine repair shops. Our Resin cures hard and strong with what various materials whether its wood, fiberglass, bare metal, lead, Carbon fiber or reinforced fabrics.
- ✅ EASY TO APPLY- This Epoxy resin flows out easy with our calibrated dual pumps in our kit, plus the Epoxy is easily applied by brush, rollers, syringe, spreader, or just poured out. The 5:1 ratio allows for strong Marine grade repairs that won’t leave you up the creek without a paddle.
- ›See more product details

## Images

![Pro Marine 5:1 Boat Epoxy Kit – Our Total Penetrating 1 Gallon Fast Hardener – Marine Grade Epoxy Clear with Pumps, it Repairs Wood, Aluminum, Paint, & Polyester Resin While Strengthening Fiberglass - Image 1](https://images-na.ssl-images-amazon.com/images/I/81G9jozB79L.jpg)
![Pro Marine 5:1 Boat Epoxy Kit – Our Total Penetrating 1 Gallon Fast Hardener – Marine Grade Epoxy Clear with Pumps, it Repairs Wood, Aluminum, Paint, & Polyester Resin While Strengthening Fiberglass - Image 2](https://images-na.ssl-images-amazon.com/images/I/91tPLmhd6rL.jpg)
![Pro Marine 5:1 Boat Epoxy Kit – Our Total Penetrating 1 Gallon Fast Hardener – Marine Grade Epoxy Clear with Pumps, it Repairs Wood, Aluminum, Paint, & Polyester Resin While Strengthening Fiberglass - Image 3](https://images-na.ssl-images-amazon.com/images/I/91zc9EzEPnL.jpg)
![Pro Marine 5:1 Boat Epoxy Kit – Our Total Penetrating 1 Gallon Fast Hardener – Marine Grade Epoxy Clear with Pumps, it Repairs Wood, Aluminum, Paint, & Polyester Resin While Strengthening Fiberglass - Image 4](https://images-na.ssl-images-amazon.com/images/I/91sv7C6uuyL.jpg)
![Pro Marine 5:1 Boat Epoxy Kit – Our Total Penetrating 1 Gallon Fast Hardener – Marine Grade Epoxy Clear with Pumps, it Repairs Wood, Aluminum, Paint, & Polyester Resin While Strengthening Fiberglass - Image 5](https://images-na.ssl-images-amazon.com/images/I/91KyhrABZTL.jpg)

## Available Options

This product comes in different **Material Type, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Overall good buy. Weak pump.
  

*by L***N on Reviewed in the United States on April 4, 2020*

Product worked well. I have never used epoxy before. They kept it easy to measure out with the pumps.The only knock on it I have is the resin pump is extremely slow. I had to leave the resin bottle next to a heat vent for a few hours to let it loosen up before I could even get it to work. This is even after it sat in my well heated shop for a few days.

### ⭐⭐⭐⭐⭐ 







  
  
    works well
  

*by S***C on Reviewed in the United States on February 9, 2020*

pumps are a little drippy once using thembut ratio was spot onas it kicks off  as required .used this epoxy resin with 1.5 CSM  and 1708 and worked fine

### ⭐ 







  
  
    Don’t let the pumps measure
  

*by P***L on Reviewed in the United States on April 2, 2020*

I bought the gallon. It’s complete crap. If you buy it messed everything and don’t use the pumps to measure. I waisted countless hours hoping it would dry and now have to strip everything just to redo it.

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-13*