Epoxy resin has become a very popular choice for
surfboard construction in the last 10 years.
Polyester resin has been the
standard in surfboards for 50 years. Epoxy is 5X stronger, has better flex
properties, better UV
resistance and very low VOCs (and no smell when glassing) than Polyester
resin. Polyester resin is is brittle
and yellows much faster than epoxy. The only advantages of polyester are
its curing times are faster
than epoxy and it sands to a shinier surface.