TotalBoat 5:1 Fast Hardener Group Size A
TotalBoat TotalBoat by Jamestown Distributors
  • TotalBoat 5:1 Fast Hardener Group Size A
  • TotalBoat 5:1 Fast Hardener Group Size B
  • TotalBoat 5:1 Fast Hardener Group Size C

TotalBoat 5:1 Fast Hardener

TotalBoat Fast Hardener is a low-viscosity epoxy curing agent for use when shorter working and curing times are needed. Our 5:1 Fast Hardener provides adequate working time at cooler temperatures. Use with both TotalBoat 5:1 Epoxy Resin and all traditional 5:1 epoxy brands.

At 75°F, TotalBoat Fast Hardener will have a pot life of 12 minutes. When combined with 5:1 Epoxy Resin in a five-part resin to one-part hardener ratio, the cured resin/hardener mixture yields a rigid, high-strength, moisture-resistant solid with excellent bonding and coating properties.

Note: Not intended for clear coating applications. For clear coating applications, use TotalBoat Traditional Epoxy Resin with TotalBoat Crystal Clear Hardener.

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Tech Spec Product Info User Generated Content
Note: Epoxy pumps may not be compatible between brands. If using TotalBoat Hardener with an alternate brand of epoxy resin, be sure to confirm accurate mixing ratios based on the exact quantity each pump will yield.

For a side-by-side comparison of the physical and handling properties of TotalBoat Fast and Slow Hardeners, please click the 5:1 Epoxy Resin & Hardeners Tech Data link.

Hardener Color  Amber (not intended for clear coating) 
Mix Ratio by Volume  5A to 1B 
Mix Ratio by Weight  100A to 18B 
Minimum Recommended Temperature   40°F 
Pot Life at 75° F  12 minutes 
Work Life at 75° F (Thin Film)  60 minutes 
Set Time at 75° F (Thin Film)  6 hours 
Cure Time at 75° F (Thin Film)  1 to 4 days 
Tensile Strength  8,000 psi 
Tensile Modulus  410,000 psi 
Tensile Elongation  3.5% 
Compressive Strength  11,500 psi 
Flexural Strength  14,400 psi 
Flexural Modulus  460,000 psi 
Volumetric Shrinkage  4.4% 
Hardness, Shore D  84 

Important Safety Information

Always wear protective clothing and equipment to protect your eyes, skin, and lungs when working with TotalBoat Traditional Epoxy Resin and Hardeners. Personal protective clothing should include appropriate gloves, safety glasses or goggles, a proper respirator, and a proper apron or similar protective clothing.

BRAND: TotalBoat
Rate Of Cure: Fast
Type: Hardener
4.6 5

Handled the cooler weather just fine.


This was the first time I used this product line on a non-marine repair. Had wood repair on house bay window and the lateness of the season required use of a faster hardener to compensate for the lower temperature. Worked exactly as expected and I achieved same results as I have when working in mid summer.


Portsmouth R. I.




Bought smallest size twice and used with 5:1 pump kit. Both times ran out of hardener way before resin. Not even close. Like plastic containers so may buy over west system but need for extra hardener makes it not cost effective. Used all in same day the second time so not a seepage out of the pump issue. Product is fine.


Sagamore Beach, Ma.


Repairing fiberglass dingy


Great for preparing to replace rub rail trim. Used to fill previously drilled 1/8" holes and ragged edges. Fiberglass cloth was used on torn edges for a tough sandable edge. Make sure ascertain correct temperature for slow, med, fast in terms of hardner.


Bentonville Ar


Great quality & price


This is the first time I used any type of resin. Based on a comparison with other products that friends have used, the TotalBoat hardener and epoxy can keep up with all the more expensive brands.


Long Island, NY


Great Epoxy for all woodwork


The calibrated pumps make it easy to use small or large amounts. It sets in an hour or two in warm weather so portioning is very helpful. I have learned to mask off surfaces around the work so I don't get spillage onto something I don't want. Drips and spills should be removed in bulk with a scraper ASAP then clean off with lacquer thinner. (So if it's an all ready painted surface, it should have been masked off). Otherwise it dries hard enough to sand. I learned that using gloves saves a lot of clean up time. If you don't and it's still tacky on your hands, lacquer thinner will work. If it dries, it will ware off eventually. I now use it for most all my woodworking joints.




5:1 Fast Hardener



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