How to Apply Fiberglass Epoxy

  • on Dec 06, 2010
    To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience.
    Reviewed by
    Hannah Madans
    on Apr 26, 2021
Fiberglass epoxy.
  • 1 hours
    •
  • Beginner
    •
  • 50
What You'll Need
Fine grit sandpaper
Epoxy resin abd hardener kit
Fiberglass cloth/fabric
Makeup spatula
Popsicle stick
Toothpick
Sealer

Fiberglass epoxy is easy to apply. With an epoxy kit, applicator, and some tools from home, you can fill holes and cracks in a few minutes.

Step 1 - Mix Epoxy

Prepare the surface.

Fiberglass epoxy kits usually come in two tubes: the resin and the hardener. Mix these two at equal proportions or as indicated in the manufacturer's instruction. Most epoxy hardens 30 minutes after mixing, so it would be best if you would mix only what you actually need. Create another batch, afterward, if you will still need it.

Step 2 - Apply Epoxy

Dip a small spatula or Popsicle stick and fill holes with epoxy mix. For wider holes, cut fiberglass cloth in the size of the hole. Apply a small amount of epoxy on the hole. Place the fiberglass cloth. Fill the hole with more epoxy until it covers the cloth. Level the epoxy to the surface and wipe excess film. Allow it to cure.

Step 3 - Sand and Seal

Sand the filled area with fine-grit sandpaper and level the area to the surface. Paint if needed. Apply a coat of sealer afterward. Allow it to dry.

How to Mix Epoxy Resin