Ark Epoxy Resin Kit
The ARK Epoxy Resin Kit is a versatile 2:1 epoxy kit for repairing, reinforcing and waterproofing a wide range of materials, including wood, fiberglass, plastic boats, metal and plumbing. It is suitable for projects like boat repairs, flooring, countertops and more, and comes with the mixing and application supplies you need to get started.
Kit Contents
- ARK Epoxy Resin
- ARK Medium Hardener
- Mixing containers
- Mixing sticks
- Gloves
- Brush
Features
- Simple 2:1 mix by volume (100:43 by weight)
- Water-clear, low-viscosity, no-blush epoxy
- Recoat in 2 to 6 hours while the previous coat is still tacky
- Thickens with ARKTHIX, colloidal silica, cotton fiber, wood flour or micro balloons for glue, gap filler and fairing compound
- Available in 12 oz, 24 oz and 1.5 quart kits
- Strong when cured with the included Medium Hardener: 7,600+ psi tensile and 14,300+ psi flexural strength, 84–85 Shore D hardness (lab tested)
Recommended Uses
- Repairing and reinforcing wood, fiberglass, plastic, metal and plumbing
- Boat repairs and small fiberglass patches
- Waterproof coating
- Gluing and gap filling
- Flooring, countertops and other projects
How to Use
- Prep: surfaces must be clean, dry and free of oil, wax and paint. Wipe with acetone and a clean cotton cloth, and sand cured epoxy, fiberglass, metal and plastics. Do not use Varsol or petroleum-based solvents.
- Measure: 2 parts ARK Epoxy Resin to 1 part ARK Hardener with graduated containers. Don’t guess: too much or too little hardener will prevent a proper cure.
- Mix: mix thoroughly, scraping the sides and bottom of the container, then add fillers if desired. Pour into a paint tray or other flat container to extend the working time, and mix only what you can use within the pot life.
- Apply: spread with a solvent-resistant brush, roller or squeegee.
- Recoat: apply the next coat as soon as the previous one is tacky, between 2 and 6 hours depending on the hardener and temperature. After 8 hours, or once the epoxy has cured hard, sand with 80-grit paper before applying more epoxy or other coatings.
- Finish: let the epoxy reach full cure before painting or varnishing (2–7 days at 22 °C / 71 °F, all hardeners). Two-part polyurethane paint works best over epoxy; cured epoxy will chalk in sunlight if left unprotected by varnish or paint.
Specifications
| Property | Details |
|---|---|
| Brand | Ark Composites |
| Type | 2:1 epoxy resin and hardener kit |
| Mix ratio by volume | 2:1 resin to hardener (100:50) |
| Mix ratio by weight | 100:43 |
| Recoat window | 2–6 hrs while tacky; after 8 hrs sand with 80-grit |
| Kit sizes | 12 oz, 24 oz and 1.5 quart |
Technical Data (with the included Medium Hardener)
| Property | Imperial | Metric |
|---|---|---|
| Viscosity @ 25 °C, mixed | 300–700 cps | |
| Specific gravity, mixed | 1.08–1.10 | |
| Mix ratio by volume | 2:1 (100:50) | |
| Gel time, 150 g mass in cup @ 22 °C | 15–20 min | |
| Tensile strength (ASTM D638) | 7,617 psi | 52.5 MPa |
| Tensile modulus (ASTM D638) | 163,464 psi | 1,127 MPa |
| Elongation at break (ASTM D638) | 6.6% | |
| Compressive strength (ASTM D695) | 10,558 psi | 72.8 MPa |
| Compressive modulus (ASTM D695) | 232,985 psi | 1,606 MPa |
| Flexural strength (ASTM D790) | 14,339 psi | 98.9 MPa |
| Flexural modulus (ASTM D790) | 459,688 psi | 3,169 MPa |
| Hardness (ASTM D2240) | 84–85 Shore D | |
Typical lab values for ARK Epoxy Resin cured with the Medium Hardener included in this kit. These are not specifications. Liquid properties are measured at 25 °C. Gel time is a lab test of a 150 g mass in the cup, not working time on the job. Metric values are converted from psi.
Hardener Cure Times
At 22 °C / 71 °F
| Hardener | Pot life | Gel time | Sandable | Full cure |
|---|---|---|---|---|
| Fast | 8–10 min | 15–20 min | 6–8 hrs | 2–7 days |
| Medium | 10–15 min | 20–40 min | 8–12 hrs | 2–7 days |
| Slow | 15–20 min | 30–60 min | 15–24 hrs | 2–7 days |
At 12 °C / 54 °F
| Hardener | Pot life | Sandable |
|---|---|---|
| Fast | 15–20 min | 10–14 hrs |
| Medium | 20–30 min | 12–20 hrs |
| Slow | 35–40 min | 24–48 hrs |
All three hardeners mix with ARK Epoxy Resin at 2:1 by volume (100:50) and 100:43 by weight. Pot life, gel and sanding times vary with temperature, mixed volume, time in the mixing container and laminate thickness: they roughly double for every 8 °C (about 14 °F) drop in temperature and halve for every 8 °C rise.
Safety and storage: ARK Epoxy Resin (Part A) is labelled WARNING: harmful if swallowed; causes skin irritation and serious eye irritation; may cause an allergic skin reaction. ARK Hardeners (Part B: Slow, Medium and Fast) are labelled DANGER: causes severe skin burns and eye damage; may be corrosive to metals; may cause allergy or asthma symptoms or breathing difficulties if inhaled; may cause an allergic skin reaction; may cause damage to organs (lungs, kidneys) through prolonged or repeated exposure. Vapours and mists are corrosive to the respiratory tract. Wear chemical-resistant (nitrile) gloves, chemical splash goggles (no contact lenses) and long sleeves, and work in a well-ventilated area; do not breathe vapours or mists, and use an approved respirator if ventilation is inadequate. Clean epoxy off skin with soap and water, never solvents. Store at room temperature in the original, tightly closed containers, upright and off concrete floors; keep hardeners locked up and away from metals; do not freeze. For safety information, refer to the Safety Data Sheet below.
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For more info on ARK Resin Application refer to the TDS sheet below.
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Data Sheets
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