Lightweight, Sandable Filler Formulated especially for surfboard [urethane] foam repair. For Deep Dings. Lightweight and Easy to Sand. Cures by UV Light in 3 Minutes (est) (or by MEKP catalyst in 30 minutes). Comes with 60/240 Grit Sand Pad and Spreader Card. NOT for Use on Styrofoam (EPS). - Made in the USA!

Only Solarez EPOXY (blue tube) will work on Styrofoam. Solarez polyester contains styrene monomer and will melt the Styrofoam. Even EXTREME (vinyl ester epoxy) contains styrene and can not be used directly on Styrofoam. It is possible however, to put a thin sealer coating of Solarez epoxy onto the Styrofoam, cure it, and then subsequently coat with whichever resin you elect, such as the durable Solarez vinyl ester. This is an excellent way to get around the obstacle of expensive resins to coat Styrofoam