20 Best Liquid Hardener For Fiberglass Resin [2024]

Are you looking for the best Liquid Hardener For Fiberglass Resin? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling Liquid Hardener For Fiberglass Resin.

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# Preview Product
1 Fiberglass Evercoat Liquid Hardener Fiberglass Evercoat Liquid Hardener
2 Bondo Fiberglass Resin Liquid Hardener, Designed For Interior and Exterior Use, 0.74 Fl oz, 1 tube Bondo Fiberglass Resin Liquid Hardener, Designed For Interior and Exterior Use, 0.74 Fl oz, 1 tube
3 EVERCOAT-603 FIBERGLASS LIQUID HARDENER RESIN 1.5 oz (44cc) (2 TUBES) (FIB-603) EVERCOAT-603 FIBERGLASS LIQUID HARDENER RESIN 1.5 oz (44cc) (2 TUBES) (FIB-603)
4 Bondo Liquid Hardener, 00912, .37 oz Bondo Liquid Hardener, 00912, .37 oz
5 3M Bondo 20126 Home Solutions Fiberglass Resin Liquid Hardener - 22 ml 3M Bondo 20126 Home Solutions Fiberglass Resin Liquid Hardener - 22 ml
6 TotalBoat-510822 High Performance Epoxy Kit, Crystal Clear Marine Grade Resin and Hardener for... TotalBoat-510822 High Performance Epoxy Kit, Crystal Clear Marine Grade Resin and Hardener for...
7 TotalBoat 5:1 Epoxy Resin Kit (Quart, Slow Hardener), Marine Grade Epoxy for Fiberglass and Wood... TotalBoat 5:1 Epoxy Resin Kit (Quart, Slow Hardener), Marine Grade Epoxy for Fiberglass and Wood...
8 3M 912 Liquid Hardener - 11 ml, 3 Pack 3M 912 Liquid Hardener - 11 ml, 3 Pack
9 True Composites Fiberglass Resin Polyester Resin Marine Grade Resin 4 Gallon Kit with MEKP Hardener... True Composites Fiberglass Resin Polyester Resin Marine Grade Resin 4 Gallon Kit with MEKP...
10 TotalBoat Polyester Laminating Resin - Marine Grade Fiberglass Resin and MEKP Catalyst for Layups... TotalBoat Polyester Laminating Resin - Marine Grade Fiberglass Resin and MEKP Catalyst for Layups...
11 True Composites Fiberglass Resin Polyester Resin Marine Grade Resin 1 Gallon with MEKP Hardener... True Composites Fiberglass Resin Polyester Resin Marine Grade Resin 1 Gallon with MEKP Hardener...
12 Bondo Fiberglass Resin Repair Kit, 00420, 0.45 Pint Bondo Fiberglass Resin Repair Kit, 00420, 0.45 Pint
13 Bondo Fiberglass Resin, 00404, 0.9 Gallon Can Bondo Fiberglass Resin, 00404, 0.9 Gallon Can
14 Epoxy Resin 1 Gallon Kit Industrial Grade | Easy to Use, Super Strong, Glossy, Clear,... Epoxy Resin 1 Gallon Kit Industrial Grade | Easy to Use, Super Strong, Glossy, Clear,...
15 FIBERLOCK A-B-C Bridging Encapsulant (Off White) - Fireproof Sealant Encapsulating Paint | Asbestos... FIBERLOCK A-B-C Bridging Encapsulant (Off White) - Fireproof Sealant Encapsulating Paint |...
16 TRUE COMPOSITES Polyester Fiberglass Laminating Resin-Grade A, 2 Gallon Low Viscosity Coating... TRUE COMPOSITES Polyester Fiberglass Laminating Resin-Grade A, 2 Gallon Low Viscosity Coating...
17 TotalBoat Polyester Laminating Resin - Marine Grade Fiberglass Resin and MEKP Catalyst for Layups... TotalBoat Polyester Laminating Resin - Marine Grade Fiberglass Resin and MEKP Catalyst for Layups...
18 West System 105-B Epoxy Resin West System 105-B Epoxy Resin
19 Deep Pour Epoxy Resin Kit Crystal Clear Liquid Glass 2 to 4 Inches Food Grade Safe Clear Epoxy... Deep Pour Epoxy Resin Kit Crystal Clear Liquid Glass 2 to 4 Inches Food Grade Safe Clear Epoxy...
20 West System 105-B Epoxy Resin Bundle with 206-B Slow Epoxy Hardener and 300 Mini Pumps Epoxy... West System 105-B Epoxy Resin Bundle with 206-B Slow Epoxy Hardener and 300 Mini Pumps Epoxy...
SaleBestseller No. 1
Bestseller No. 2
Bondo Fiberglass Resin Liquid Hardener, Designed For Interior and Exterior Use, 0.74 Fl oz, 1 tube
  • Liquid hardener designed to mix with Bondo polyester fiberglass resin and Bondo Metal Reinforced Filler requiring liquid hardener
  • Creates chemical reaction with resin for fast curing
  • Use with Bondo Fiberglass Resin for auto and home repairs including tubs, showers, sinks, pools, hot tubs, boats, and more.
  • Results in a 100% waterproof repair
  • Apply to fiberglass, metal, brick, wood, and concrete surfaces
Bestseller No. 3
EVERCOAT-603 FIBERGLASS LIQUID HARDENER RESIN 1.5 oz (44cc) (2 TUBES) (FIB-603)
  • EVERCOAT-603 FIBERGLASS LIQUID HARDENER RESIN 1.5 oz (44cc) (2 TUBES) (FIB-603).
  • Hardening agent for use with all polyester resins and gel coats.
  • Plastic squeeze tube has graduated measure for mixing convenience.
  • Use this Methyl Ethyl Ketone Peroxide catalyst according to the resin/gel coat label directions
SaleBestseller No. 4
Bondo Liquid Hardener, 00912, .37 oz
  • Liquid hardener designed for Bondo polyester fiberglass resin and Bondo Metal Reinforced Filler requiring liquid hardener
  • Creates chemical reaction with resin for fast curing
  • Results in a 100% waterproof repair
  • Great for repairing auto bodies and boats
  • Easy mixing produces a better hardener and filler blend
Bestseller No. 5
3M Bondo 20126 Home Solutions Fiberglass Resin Liquid Hardener - 22 ml
  • Sale Unit: TUBE
  • Brand: 3M
  • Trade Name: Bondo
  • 3M Number: 20126
  • Industry: Automotive
Bestseller No. 6
TotalBoat-510822 High Performance Epoxy Kit, Crystal Clear Marine Grade Resin and Hardener for...
  • EPOXY KITS include low-viscosity resin and clear, non-blushing hardener for woodworking, boat building, laminating and repair projects. Ideal for...
  • NON-BLUSHING EPOXY system means no time-consuming washdowns to remove surface blush between coats, so projects get finished faster. Low odor and low...
  • CHOOSE SLOW, MEDIUM, OR FAST HARDENER to control working properties and cure times. Slow Hardener has the longest working and cure times. Medium...
  • CHOOSE EPOXY KIT SIZE: Pint, Quart, Gallon or 2 Gallon. All TotalBoat Epoxy Kits come with calibrated pumps, mixing sticks and mixing cups. Compatible...
  • PUMPS INCLUDED: Metered resin and hardener pumps provide the exact 2 parts resin to 1 part hardener ratio for a proper cure every time; easy-to-use...
Bestseller No. 7
TotalBoat 5:1 Epoxy Resin Kit (Quart, Slow Hardener), Marine Grade Epoxy for Fiberglass and Wood...
  • PREMIUM EPOXY KITS include enough 5 to 1 marine epoxy resin and hardener to complete a variety of boat building and epoxy repair projects For wood,...
  • IDEAL VISCOSITY for wetting out fiberglass cloth and other reinforcement fabrics Self-leveling properties ideal for coating and laminating Combine...
  • CHOOSE FAST OR SLOW HARDENER: Pot life ranges from 12 min at 75F for Fast Hardener, to 20 minutes at 75F for Slow Hardener Cures to a high-strength,...
  • CHOOSE FROM THREE EPOXY KIT SIZES: Quart, Gallon, and 4.5 Gallon, with your choice of TotalBoat 5:1 Fast or Slow Hardener. Kits include resin,...
  • PUMPS INCLUDED: Metered resin and hardener pumps provide the exact 5 parts resin to 1 part hardener ratio for a proper cure every time. Easy-to-use...
Bestseller No. 8
3M 912 Liquid Hardener - 11 ml, 3 Pack
  • Can be used with tape, cloth or mat
  • Use tape for minor repairs, cloth on contour surfaces where thickness is less important, mat on areas where extra strength is required
  • Sold as 3 Pack
Bestseller No. 10
TotalBoat Polyester Laminating Resin - Marine Grade Fiberglass Resin and MEKP Catalyst for Layups...
  • GENERAL PURPOSE POLYESTER RESIN stays tacky to hold fiberglass cloth and composite fabrics in place during boat building & layups; ideal for hull &...
  • FAST WET OUT OF FIBERGLASS and other reinforcement fabrics used to create composites and FRP parts for yachts, boats, motorcycles and more; ideal for...
  • EASY TO USE, NO SANDING: Polyester fiberglass resin is an excellent base coat for laminating applications; just mix in MEKP catalyst and use...
  • INCLUDES MEKP CATALYST: Adjust the amount of MEKP hardener to control gel time; slow gel (20 min +): 1 teaspoon of MEKP per quart of resin; medium...
  • CHOOSE QUART OR GALLON SIZE. Note: Resin and work area should be between 70°F to 95°F; store in temperatures below 77°F; for the final layer in...
Bestseller No. 11
True Composites Fiberglass Resin Polyester Resin Marine Grade Resin 1 Gallon with MEKP Hardener...
  • ✅ GRADE A-True Composites is a renowned name for its premium product used in the marine industry!
  • ✅ CURES FAST-Reach cured quickly-4 hours minimum to 24 hours maximum, based on temperature!!
  • ✅ DRIES TACK-FREE-This DCPD-type resin dries tack free without the need for wax!!
  • ✅ MULTIPLE APPLICATIONS: marine, aerospace, FRP parts, auto body, on wood, fiberglass, or metal!!
  • ✅ HIGH COMPATIBILITY - Compatible with all types of fiberglass and coring materials, this polyester laminating resin is perfect for low-cost...
SaleBestseller No. 12
Bondo Fiberglass Resin Repair Kit, 00420, 0.45 Pint
  • EASY DO-IT-YOURSELF KIT to repair holes and scratches on automobiles, boats and more
  • 100% WATERPROOF seal for long-lasting, durable repairs
  • STRONG AND VERSATILE FORMULA for multiple surfaces including concrete, wood, fiberglass, and metal
  • Sandable in under 2 hours
  • Includes everything that is needed for the DIYer - fiberglass resin, liquid hardener, plastic spreader, fiberglass cloth, mixing stick and mixing tray
SaleBestseller No. 13
Bondo Fiberglass Resin, 00404, 0.9 Gallon Can
  • CREATES LONG LASTING BONDS for auto and boat restoration and repair projects
  • 100% WATERPROOF repairs on fiberglass, metal, and more
  • SANDABLE in less than 2 hours
  • Use with Bondo Fiberglass Cloth or Mat for stronger repairs
  • Includes Bondo Fiberglass Resin Liquid Hardener for convenient, accurate mixing
SaleBestseller No. 14
Epoxy Resin 1 Gallon Kit Industrial Grade | Easy to Use, Super Strong, Glossy, Clear,...
  • 🏗️ CUSTOM DIY PROJECTS, ARTWORK, CONSTRUCTION - Create customized works of one-of-a-kind artisan craftsmanship. Perfect for DIY projects,...
  • 💎 HEAVY DUTY CLEAR COATING/ADHESIVE - Achieve clear, flawlessly transparent epoxy coatings with our ultra-high performance resin and hardener kit!...
  • ✔️ SCRATCH AND WATER-RESISTANT - We're committed to the highest quality engineering and production standards. Our dedicated research & development...
  • ✨ SUPER EASY TO APPLY - With East Coast Resin epoxy, you don't have to be a pro to achieve professional results the very first time! Our...
  • 🥘 SAFE AND MINIMAL ODOR - Surfaces coated with our premium epoxy are 100% safe for food to touch, and durably maintain their structural integrity...
Bestseller No. 15
FIBERLOCK A-B-C Bridging Encapsulant (Off White) - Fireproof Sealant Encapsulating Paint | Asbestos...
  • ASBESTOS SEALER: Asbestos sealant is used for encapsulating fireproofing and insulation material. Ensures long lasting barrier over lead paint. Apply...
  • CLASS A FIRE RATED: Our ABC encapsulant is class A fire rated. Water-based and ensures desirable results. Exceeds EPA standards for encapsulation.
  • INSTRUCTION FOR USE: Tools and dripping’s should be cleaned with warm soapy water before coating dries. Apply as a penetrating encapsulant to...
  • SURFACE PREPARATION: Before applying the asbestos encapsulant, it is important to determine if the existing asbestos matrix well adheres to the...
  • COVERAGE: Typical bridging applications are applied at a coverage rate of 75-100 sq. ft./gallon, which yields a dry film thickness between 6-10 mils...
Bestseller No. 16
TRUE COMPOSITES Polyester Fiberglass Laminating Resin-Grade A, 2 Gallon Low Viscosity Coating...
  • ✅ GRADE A-True Composites is a renowned name for its premium product used in the marine industry!
  • ✅ GRADE A-True Composites is a renowned name for its premium product used in the marine industry!
  • ✅ CURES FAST-Reach cured quickly-4 hours minimum to 24 hours maximum, based on temperature!!
  • ✅ DRIES TACK-FREE-This DCPD-type resin dries tack free without the need for wax!!
  • ✅ MULTIPLE APPLICATIONS: marine, aerospace, FRP parts, auto body, on wood, fiberglass, or metal!!
Bestseller No. 17
TotalBoat Polyester Laminating Resin - Marine Grade Fiberglass Resin and MEKP Catalyst for Layups...
  • GENERAL PURPOSE POLYESTER RESIN stays tacky to hold fiberglass cloth and composite fabrics in place during boat building & layups; ideal for hull &...
  • FAST WET OUT OF FIBERGLASS and other reinforcement fabrics used to create composites and FRP parts for yachts, boats, motorcycles and more; ideal for...
  • EASY TO USE, NO SANDING: Polyester fiberglass resin is an excellent base coat for laminating applications; just mix in MEKP catalyst and use...
  • INCLUDES MEKP CATALYST: Adjust the amount of MEKP hardener to control gel time; slow gel (20 min +): 1 teaspoon of MEKP per quart of resin; medium...
  • CHOOSE QUART OR GALLON SIZE. Note: Resin and work area should be between 70°F to 95°F; store in temperatures below 77°F; for the final layer in...
Bestseller No. 18
West System 105-B Epoxy Resin
  • 105 EPOXY RESIN is the base material on which all WEST SYSTEM 105 System epoxy compounds are built. It is a clear, pale yellow, low-viscosity liquid...
  • THIS EPOXY IS EASILY MODIFIED with WEST SYSTEM Fillers, Additives, and Pigments to create the necessary handling characteristics to suit the job at...
  • COMBINED WITH WEST SYSTEM 205 Fast Hardener or 206 Slow Hardener at a 5-parts resin to 1-part hardener ratio, 105 Resin cures, developing superior...
  • COMBINED WITH BLUSH-FREE 207 Extra Clear Hardener at a 3-parts resin to 1-part hardener ratio, 105 Resin is excellent for coating and fiberglass cloth...
  • COMBINED WITH 209 Extra Slow Hardener at a 3-parts resin to 1-part hardener ratio, 105 Resin is especially well suited for general coating and...
Bestseller No. 19
Deep Pour Epoxy Resin Kit Crystal Clear Liquid Glass 2 to 4 Inches Food Grade Safe Clear Epoxy...
  • 👍 Our LIQUID GLASS Epoxy Resin Kit is Expertly FormulatedSelf Leveling Epoxy by Our Chemists! Perfect For Mica Powder, Deep Resin Molds, Alcohol...
  • 👍 HIGHEST EPOXY RESIN UV PROTECTION! Our SuperClear Liquid Glass 2” Thick Pour Has The Highest UV Yellowing Resistance Out Of All Competitor’s!...
  • 👍 EXCELLENT FOR Colored Epoxy Resin Wood Filler Applications, Or As A Clear Epoxy Resin Wood Filler & Filling Large Voids In Wood With Epoxy...
  • 👍 WORKS AMAZINGLY With Metallic Epoxy Pigment! Mixes Flawlessly With Epoxy Resin Color Pigments, Mica Powders Like Black Diamond Pigments & Creates...
  • 👍 We Are the Original Manufacturer, and We've Been in this Business for over 60 years! SUPERCLEAR 2.0 IS MADE IN THE USA! ODOR FREE! ZERO VOC’s!
Bestseller No. 20
West System 105-B Epoxy Resin Bundle with 206-B Slow Epoxy Hardener and 300 Mini Pumps Epoxy...
  • The product type name is "West System 105B Epoxy Resin (126.6 fl oz) Bundle with 206B Slow Epoxy Hardener (27.5 fl oz) and 300 Mini Pumps Epoxy...
  • This product is manufactured by West System
  • This product is manufactured in United States
  • Package Dimensions: 36.83 H x 15.24 L x 29.21 W (centimeters)

Having trouble finding a great Liquid Hardener For Fiberglass Resin?

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After hours of searching and using all the models on the market, we have found the best Liquid Hardener For Fiberglass Resin for 2023. See our ranking below!

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  7. Product Quality: You don’t always get what you pay for with an Liquid Hardener For Fiberglass Resin, sometimes less, and sometimes more.
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FAQ:

Q: How to cure fiberglass resin faster?

A: How to Cure Fiberglass Resin Faster – Housekeeping Bay great housekeepingbay.com. Warm up the bottles with resin and hardener in a hot water for 5-10 min. Like that, the chemical reaction will start faster helping the resin to boost its cure speed.

Q: How to measure and mix resin and hardener?

A: Pour the mixture of the resin and the hardener onto the surface you want to epoxy,in our case the wooden floor. Distribute this mixture evenly with a glove on or with a squeegee. Pour remaining mixture to the desired thickness in our case⅛inches Ensure the resin and hardener mixture covers the slides of the area you want to epoxy

Q: Will fiberglass resin harden without enough hardener?

A: Will fiberglass resin harden without enough hardener? hez said: It didn’t come with any hardener? Well no, it won’t harden. It might eventually go dry and crusty, but that depends on the resin, and it would be super brittle in that state anyway. How do you harden tacky epoxy? Epoxy coating curing too slowly.

Q: Where to buy fiberglass resin?

A: All-purpose fiberglass resins works for many repair projects Versatile formula repairs fiberglass,metal,wood and masonry Resin is compatible with all paints and gel coats Quick-acting formula allows sanding in approximately 2 hours Waterproof formula for strong,durable repairs of large holes or cracks