This is as true for insulation board as it is for the ubiquitous expanded polystyrene kind of foam used for everything from coffee cups to packaging material. Those stick-type hot wire cutters ...
Most foam cups and containers are not technically Styrofoam, but are made of polystyrene foam according to Melissa Valliant, communications director for Beyond Plastics, a nonprofit organization ...
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.
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