Low density (2 lb./ft3). Tight closed cell structure leaves no voids between the cells which provides unequaled resistance to water penetration. Has excellent resistance to bases, salts, alcohols and most acids but not to petroleum based solvents. Cuts smoothly with a hot wire for airfoil shapes.
Warning: NOT for structural use in building aircraft such as VariEze, Long-EZ, Cozy, etc.
The crush strength of this foam is 25 PSI.
Yes, this is sandable.
Per the vendor, most epoxy resin will work with this product but you should check with the manufacturer of your epoxy to make sure it is safe for styrofoam.