glue for stringer?

Ive got these 8 foot pieces of insulating foam that i want to make into surfboard blanks just to see if it works. They are only about 2.5 inches thick so im going to try and bend in the rocker by clamping and gluing the blank halves to a thick stringer with rocker already cut in. Can someone tell me what kind of glue is used to bind the stringer to the foam?

-Mahalos!

Welcome Waipolo,

If it’s bead foam (styro, or EPS) you can use white glue.

If it’s poly-iso-cyanurate then white glue or polyester resin is okay.

Epoxy will work for both kinds of foam sheets but it costs $…