Thick Epoxy Hardener (1:1 Ratio)

SKU:EPOX-150H008

$15.95 USD

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1000 in stock

Size: 8oz

8oz 16oz 32oz (Quart) 64oz (Half Gallon) 128oz (Gallon)

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The hardener half of our Thick 1:1 epoxy system, sold on its own so you can rebalance bench stock instead of buying a whole kit when one side runs out. Equal parts by volume with Thick Epoxy Resin, no pump math and no ratio chart taped to the bench.

Mix ratio: 1:1 by volume with Thick Epoxy Resin. Stir until the color is uniform with no streaks.
Pot life: 30 to 35 minutes at 80 F. Hotter shop or a deeper mix cup shortens that.
Set time: 3 to 4 hours to a set, hard in 12 to 14 hours.
Matched to Thick resin. For our Thin laminating resin, use the 2:1 or 4:1 hardeners instead.
Sizes: 8 oz, 16 oz, quart, half gallon and gallon.

Scrape the sides and bottom of the cup. Unmixed hardener in the corner is the most common cause of a soft cure.

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Technical Specifications

Mix 1:1 with Thick Epoxy Resin by volume - equal parts, no pump math

Resin TypeEpoxy hardener - 1:1 (pairs with Thick Epoxy Resin)

Mix Ratio1:1 with Thick Epoxy Resin by volume - equal parts, no pump math

Pot Life30-35 min @ 80°F

Tack-FreeSets in 3-4 hr

Full CureDries hard in 12-14 hr

Best ForRestocking the hardener side of the Thick 1:1 system

Compare Resins

Product	Thick Epoxy Hardener (1:1 Ratio)You're viewingfrom $15.95	Boat Suppliers Slow Epoxy Hardener 2:1 Ratiofrom $15.95	Boat Suppliers Fast Epoxy Hardener 4:1 Ratiofrom $15.95	Boat Suppliers Epoxy Resin Kit - Thick, 1:1 Bonding and Coating, with Hardenerfrom $19.95
Type	Epoxy hardener - 1:1 (pairs with Thick Epoxy Resin)	Epoxy hardener - slow, non-blushing	Epoxy hardener - fast	Epoxy - thick 1:1 bonding & coating (no-sag)
Mix Ratio	1:1 with Thick Epoxy Resin by volume - equal parts, no pump math	2 parts resin : 1 part hardener by volume	4 parts resin : 1 part hardener by volume	1:1 resin : hardener by volume - equal parts, no pump math
Viscosity	—	—	—	Very thick - high build, no sag on vertical surfaces
Pot Life	30-35 min @ 80°F	35-40 min @ 80°F	15 min @ 80°F	30-35 min @ 80°F
Full Cure	Dries hard in 12-14 hr	Dry in 24-28 hr	Dry in 3-4 hr	Dries hard in 12-14 hr
Cured Color	—	Dries clear in thin coats	Dries clear in thin coats	—
UV	—	—	—	Not UV-stable - topcoat for sun exposure
Fabrics	—	—	—	None - NOT for wetting out fiberglass, carbon, or Kevlar; use the Thin 635 kit for laminating
Best For	Restocking the hardener side of the Thick 1:1 system	Clear work & humid conditions (no amine blush); keep above 70°F	Fast turnaround & cold weather down to ~45°F; most rigid laminate	Bonding, fillets & high-build coats on vertical surfaces - stays where you put it
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