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TotalBoat High Performance Slow Hardener is the curing agent for low-viscosity TotalBoat High Performance Epoxy Resin when you need to extend pot life and cure time, or when you are working in warmer temperatures.
At 77°F, this non-blushing hardener has a pot life of 40 minutes, will be tack-free in approximately 5 hours, and reaches full cure in 5 days.
Pairing TotalBoat High Performance Resin with the Slow Hardener creates a moisture-resistant solid that cures clear, ideal for clear coating applications. No blush to remove between coats means no time-consuming washdowns & no worrying about whether you removed all the blush, which could cause improper cure.
This Slow Hardener is available in Group Size A (pint), B (half gallon), and C (gallon), to match the group sizes of TotalBoat High Performance Epoxy Resin. This reduces waste and saves you money.
Note: Slow hardener is also available in a 26.1 gallon container, for use with drums of High Performance Resin. Please contact us for pricing.
|Properties (Admixed)||High Performance Fast Hardener||High Performance Medium Hardener||High Performance Slow Hardener|
|Mix Ratio by Volume (Resin:Hardener)||2:1||2:1||2:1|
|Mix Ratio by Weight (Resin:Hardener)||100A:46B||100A:45B||100A:45B|
|Initial Mixed Viscosity at 77°F||650 cP||600 cP||600 cP|
|Gel Time at 77°F (150g mass)||10 min.||25 min.||40 min.|
|Tack-Free Time at 77°F||2 hrs.||3 hrs.||5 hrs.|
|Full Cure at 77°F||2 days||3.5 days||5 days|
|Minimum Recommended Temperature||55°F||55°F||55°F|
|Tensile Strength||7,700 psi||8,000 psi||7,300 psi|
|Tensile Modulus||380,000 psi||390,000 psi||360,000 psi|
|Flexural Strength||11,600 psi||11,600 psi||10,200 psi|
|Flexural Modulus||330,000 psi||360,000 psi||330,000 psi|
|Compressive Strength||9,500 psi||9,900 psi||8,900 psi|
|Hardness, Shore D||84||83||83|
|Intended for Clear Coating Applications?||YES||YES||YES|
|Maximum Pour Depth, Per Layer|
|High Performance Fast Hardener||High Performance Medium Hardener||High Performance Slow Hardener|
|Less than 1/8''||1/8''||1/4'', up to 75°F, for larger pours, slabs|
|1/8'', over 75°F, for larger pours, slabs|
|3/8'', up to 75°F, for smaller castings using up to 1 oz. of epoxy|
|1/4'', over 75°F, for smaller castings using less than 4 oz. of epoxy|
Three Hardener Speeds Let You Control Pot Life and Cure Time
Fast, Medium, and Slow High Performance Hardeners allow you to control the pot life and cure times to suit your particular working conditions.
Even better, you can craft your ideal working properties and pot life by combining the different hardeners with each other, but always remember to maintain the proper ratio of 2 parts resin to 1 part hardener by volume.
Which High Performance Hardener Should I Use?
IMPORTANT! In order to achieve a proper cure, accurate mix ratios are critical when working with epoxy resin and hardeners.
TotalBoat High Performance Epoxy Resin and TotalBoat High Performance Hardeners can be measured either by pouring or by using the calibrated TotalBoat 2:1 Epoxy Pumps (sold separately). If using the pump method for dispensing, USE ONLY TOTALBOAT 2:1 Epoxy Pumps. DO NOT substitute the pumps from any other epoxy system or the material will not cure properly.
NOTE: The procedure for dispensing TotalBoat High Performance Epoxy Resin and TotalBoat High Performance Hardener properly is always ONE full pump of resin to ONE full pump of hardener.
Group Size A
Group Size B
Group Size C
PERSONAL SAFETY: For your safety, please be sure to wear protective gloves and eye, face, and clothing protection when working with epoxy resin and hardeners. Also, be sure your work area has adequate ventilation, and that you wear a proper respirator.
May 30, 2021
It takes an extremely long time to cure...I wouldn't touch it with a rag, cloth rag ect...for at least 2 weeks. Worth the wait, beautiful product...order mixing tubs, trust me :)
April 23, 2021
The product is fine. Paul has done a great job of helping us with various purchases.
March 19, 2021
I wish I could be a brand ambassador because this is the only resin I stand for. I've tried 2 other brands and nothing compares !
August 24, 2020
As a woodworker making a table I needed a way create a narrow dark feature strip between two different woods along a complex curve 24 feet long. The curves were too tight for bent wood. I tested other epoxies but bubbles destroyed the effect. Total Boat High Performance dyed to the right color solved it. Not a single bubble in the entire pour! Great product.
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