what is the difference between pu and eps boards?
Polyurethane TECHNOLOGY (PU)
Epoxy Technology "eps"
Epoxy surfboards came into the picture a bit later and it wasn’t until the 90’s that they really caught on. Typically, epoxy boards are made from EPS foam and are coated in epoxy resin. EPS foam is produced by feeding tiny polystyrene spears into a machine and then adding steam (with small amounts of pentane gas) to expand the beads and then mold them together. EPS is an open cell foam, meaning it’s extremely water absorbent. In order to keep the board water tight, shapers add extra layers of fiberglass and epoxy resin. Traditionally, most hand shapers don’t make boards from EPS foam but it is a great resource for pop-out boards.