I keep hearing that EPS is a “better” board because it is lighter and stronger. I’ll leave that for another discussion. My question is how does EPS v. PU affect the flex of a board. Is the flex in the foam or the glass? Assuming two boards identically glassed (I know EPS melts in polyester) would there be a discernable difference in the flex of the board between EPS and PU?
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I keep hearing that EPS is a “better” board because it is lighter and stronger. I’ll leave that for another discussion. My question is how does EPS v. PU affect the flex of a board. Is the flex in the foam or the glass? Assuming two boards identically glassed (I know EPS melts in polyester) would there be a discernable difference in the flex of the board between EPS and PU?
Whatever flex you feel is shared between the foam and the glass/resin.
Yes there is a difference in feel. Whether ir not its good or bad depends on the skills of the people who shaped and glassed the board as well as your own personal preferences.