cutting foam with a knife, even a serrated plastic knife meant for the job, is a messy pain in the ass. This is as true for insulation board as it is for the ubiquitous expanded polystyrene kind ...

Epoxy resins have come into board-building thanks to the increasing use of super-light expanded polystyrene foam ... and slow to absorb water, PU foam is easy to cut to a fine tolerance and ...

Yet, insulation made from polystyrene is actually considered ... mark the dimensions on the foam board, and cut it out with ...

In his guide, he details the difference between XPS (expanded polystyrene) and EPS (extruded polystyrene) and how each product’s closed cell and open cell nature affects the final board.