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Product Details
TotalBoat 5:1 Slow Hardener is a low-viscosity epoxy curing agent for use when extended working and cure time is needed or to provide adequate working time at higher temperatures. Use with both TotalBoat 5:1 Epoxy Resin and all traditional 5:1 epoxy brands.
At 75°F, our Slow Hardener will have a pot life of 20 minutes. When combined with TotalBoat 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.
Important: Not intended for clear coating applications. For clear coating applications, we recommend TotalBoat High Performance Epoxy.
Note: TotalBoat 5:1 Slow Hardener is also available in a 10.4 gallon container, for use with 55 gallon drums of 5:1 resin. Please contact us for pricing.
Tech Specs
| 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 | 60°F |
| Pot Life at 75° F | 20 minutes |
| Work Life at 75° F (Thin Film) | 90 minutes |
| Set Time at 75° F (Thin Film) | 10 hours |
| Cure Time at 75° F (Thin Film) | 1 to 4 days |
| Tensile Strength | 7,500 psi |
| Tensile Modulus | 460,000 psi |
| Tensile Elongation | 4.5% |
| Compressive Strength | 11,500 psi |
| Flexural Strength | 12,000 psi |
| Flexural Modulus | 450,000 psi |
| Volumetric Shrinkage | 4.4% |
| Hardness, Shore D | 83 |
Info & Guides
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.
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.
WARNING: The TotalBoat 5:1 Epoxy Slow Hardener can expose you to chemicals including bisphenol A, which is known to the State of California to cause female reproductive toxicity. For more information, go to www.P65Warnings.ca.gov
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Reviews
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1 to 10 of 16 Reviews
1 – 10 of 16 Reviews
Most Recent
Waterton MA
5 out of 5 stars.
Consistent performance
a year ago
Whether in a kit form or by itself same superior product.
Helpful?
Icard,NC
4 out of 5 stars.
Can't set hard without it!
2 years ago
The hardener is essential to make rock hard epoxy to finish a strip canoe.
Helpful?
Dayton, Ohio
5 out of 5 stars.
Easy to work with.
3 years ago
Slow hardener works well especially when you are a newbie like me. Only trouble I had was no matter how careful I was about mixing the correct amounts I never have enough hardener for the amount of resin. I did not use the pump supplied in the kit as one of the straws to lengthen the pump was missing. Instead, I used the graduations on the mixing cups allowing time for the resin and hardener to settle out.
Helpful?
Southbury CT
5 out of 5 stars.
Great product as usual
4 years ago
Ordered the 5:1 mix and use it a lot for filling wood defects and inclusions dyed black mainly. Live the product.
Helpful?
North Carolina
5 out of 5 stars.
Yes
4 years ago
I replace transom on my boat and slow hardener give you the time needed work the glass.
Helpful?
Ozark , Al
5 out of 5 stars.
Excellent product
5 years ago
Total Boat epoxy compares to West Marine epoxies . I find no difference between the two except for the price. Use this at the correct temp range and you will be happy.
Helpful?
Fountain Inn, SC, USA
5 out of 5 stars.
Easy to use even in warm SC weather
7 years ago
As a first-time 'glasser, I was concerned that it would be too warm and the resin would set before it was spread and smooth. TotalBoat 5:1 Slow Hardner performed as described in TotalBoat Product Guide giving me plenty of working time even though the temperature was over 80 (in October).
Helpful?
Louisiana
5 out of 5 stars.
I would and have bought this product again.
7 years ago
Bought fast hardener first but found I wasn't that fast on the application. This made a huge difference with the pot time. Works great. I highly recommend it.
Helpful?
Fl
5 out of 5 stars.
great product.
7 years ago
just right for temps 90-75 deg. enough working time and ready to go the next day
Helpful?
central, Fl.
2 out of 5 stars.
I think this jug might be bad or going bad
9 years ago
It doesn't cure / set up as it should. This is my 3 or 4 jug I've gotten from you folks. The other's seemed to work just fine. This one is not curing right
Helpful?
1 – 10 of 16 Reviews
Questions
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1 - 9 of 9 Questions
Q: null Does it come with a measuring pump?
4 years ago1 Answer
A: The hardener by itself does not come with a pump. Pumps are normally supplied with the kits, and they can be purchased separately, but they are currently unavailable due to the Covid 19 situation.
4 years agoHelpful?
Q: null how much 5:1 slow harder do I need for a gallon of epoxy?
4 years ago1 Answer
A: 5 parts resin to one part hardener. A gallon container is labeled size B. The correct size hardener is also labeled size B. It is approximately 25 ounces.
4 years agoHelpful?
Q: null TotalBoat 5:1 Slow Hardener ,Description Size A says 6 oz. in dropbox but also says 1 Pint So it should read 16 oz.
5 years ago1 Answer
A: The epoxy is mixed at a ratio of 5 parts resin to 1 part hardener. One quart of resin is 32 ounces so you mix approximately 6 ounces of hardener.
5 years agoHelpful?
Q: null Can this be used for a1"" pour?
5 years ago5 Answers
A: I think the maximum recommended thickness per layer is 1/8th inch. So theoretically you could break up your pour into multiple layers and let the heat dissipate between each layer, but that would take a long time. There are better epoxies for making thick pours. This is mainly designed to be used as a fiberglass laminating resin. The slow hardener is for use on hot days and the fast hardener is designed to be used on cold days, but neither one will change the cooling rate of the resin. ?Get TypeApp for Android ?
5 years agoHelpful?
Q: null Why is the resin and hardner more expensive than the whole kit ??
5 years ago2 Answers
A: If you are looking to a customer for an answer, here it is: ""for the same reason the number of hot dogs don't match the number of hot dog buns in their respective packages!""
5 years agoHelpful?
Q: null Can either West System epoxy or Total Boat Epoxy be used at a lower temperature? My basement usually only gets to a temperature of 55 degrees during the winter.
6 years ago2 Answers
A: If the question is r/t the slow hardener pictured, then for that lower temperature a fast hardener would work better. I use slow hardener in the tropics and never mix more than I can apply.
6 years agoHelpful?
Q: null Will this work for an indented part of my deck which has been stressed and sunken about 1/16 of an inch around as stanchion?
10 years ago2 Answers
A: I've only used my TotalBoat for laminating, but I think that it should work for fairing or backing a new stanchion. I used mine in Florida at about 80-85 degrees so it set up quickly. The 20 minutes they talk about is good if the temp is < 75 degrees, but if you are in a warmer climate, you may need to hustle. I would recomment coating the base of the ding with a pure coat to get it to bond with the substrate before putting in the thickened epoxy. I used wood flour for a thickener, but some would suggest using balloon colloidals. I don't have experiece using the latter. Good luck on your project. Cheers. Dan Mannschreck
10 years agoHelpful?
Q: null Is this hardener amber colored?
11 years ago1 Answer
A: It is clear out of the new container. Like the West system I suspect it may discolor after humid air comes in contact. If you are referring to a clear coat on wood for a bright finish You should not have any problem.
11 years agoHelpful?
Q: null What is the weight of one (1) gallon of Total Boat epoxy resin ? What is the weight of 1/5 gal. Total Boat slow hardener ? What is the price of group D size Total Boat slow hardener
6 years ago0 Answers