2:1 Laminating Epoxy

November 29, 2023 2 min read

Safety Precautions:

  1. Personal Protection: Wear gloves, safety glasses, and a respiratory mask to avoid inhaling any fiberglass particles. Always work in a well-ventilated area.
  2. Avoid contact with skin and eyes.
  3. Keep out of the reach of children.


  1. Ensure your working area is clean, dry, and dust-free.
  2. Prepare the surface you're laminating onto. It should be clean, free of dust, grease, and oils, and sanded if required.
  3. Cut your fiberglass cloth or mat to the required size, allowing a little extra for overlapping and waste.

Mixing the Epoxy:

  1. Ratio: Mix at a 2:1 ratio by volume. For every 2 parts of epoxy resin, add 1 part of the chosen hardener (slow, medium, or fast).
  2. Mix thoroughly for at least 2-3 minutes, ensuring that you scrape the sides and bottom of the mixing container.


  1. Wet out the surface you're applying the fiberglass to with a thin layer of the mixed epoxy using a brush or roller.
  2. Lay the fiberglass cloth or mat onto the wetted surface, ensuring it lies flat and smooth.
  3. Apply more epoxy over the fiberglass, saturating it completely. Use a brush, roller, or squeegee to ensure the fiberglass is fully wetted out and there are no air bubbles or wrinkles.
  4. If adding multiple layers, repeat the process for each layer, ensuring each layer is adequately saturated before adding the next.


  1. Allow the epoxy to cure. The cure time varies based on the hardener's speed:

    • Slow Hardener: Offers a longer working time, ideal for larger surfaces.
    • Medium Hardener: General-purpose, average working time.
    • Fast Hardener: Quicker cure time, ideal for smaller projects or cooler conditions.
  2. Avoid touching, moving, or putting weight on the project during the curing process.


  1. Once fully cured, you can sand the surface for a smooth finish.
  2. If needed, you can apply additional coats of epoxy or a UV-protectant topcoat if your project will be exposed to sunlight.


  1. Clean up spills immediately using acetone or another appropriate solvent.
  2. Clean brushes, rollers, and other tools before the epoxy hardens.


  1. Store unused epoxy and hardener in their original containers with lids tightly closed.
  2. Keep in a cool, dry place, away from direct sunlight.


  • Accurate measuring ensures the best 2:1 ratio and optimal curing.
  • Working in cooler temperatures can slow the curing process; warmer temperatures can speed it up.
  • Use a plastic squeegee or roller to help remove any air bubbles from the laminate.