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March 22, 2016

The Guts...There is a misunderstanding among much of the surfing public regarding what exactly an Epoxy surfboard is.

Epoxy is merrily a resin system know as a thermoset Polymer (Plastic). Polyester resin, what most boards have been made with for the past 60+ years, is also a thermoset polymer. Meaning heat or a chemical reaction cures a pre-polymer (uncured resin) irreversibly. So basically Epoxy is just a resin system that wets the cloth on a surfboard. It can be used over  traditional Polyurethane blanks (PU), Expanded Polystyrene (EPS) cores or Extruded Polystyrene (XPS).

The term Epoxy Surfboard has been used in most of the industry and buying publics minds to describe EPS/Epoxy built surfboards. Partially correct. But Epoxy is just the resin system and can work over PU cores as well. Generally, Epoxy is 20% stronger in tensile strength over Polyester Resin when it comes to bonding. Tensile strength is a measurement of the force required to pull something such as rope, wire, or a structural beam to the point where it breaks.

There are many benefits of Epoxy over Polyester as well.  

  1. Much lower VOCs (Volatile Organic Compounds) which are what is off gassed while the resins are mixed and curing. Stinks less.
  2. Stronger Bonds/ adhesion.
  3. Wetting of Fiberglass, carbon or other materials easier resulting in the potential for a lighter finished product.
  4. Resistant to Wear. Epoxy s more resistant to wearing, cracking and peeling, and corrosion or damage from chemical or environmental degradation.
  5. Slower kick time (actually a negative for most professional glass shops)
So in a nut shell... we Fancy Epoxy!!

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