One option is to seal the rim joists with rigid insulation cut to fit. We recommend a minimum of two-inch-thick extruded ...

Jeffrey McNaught, owner of Edgewater Surf, hopes to reduce the amount of expanded polystyrene foam that ends up in landfills ...

The Thermomass system is made up of extruded Dow Styrofoam polystyrene insulation and fiber composite connectors. "The connectors hold the two pieces of concrete together and keep everything bound ...

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.