What is extruded polystyrene?
GreenGuard insulation is extruded polystyrene (commonly referred to as XPS), a foam insulation material manufactured by an extrusion process. Plastic resin pellets are fed into an extruder, blended with a blowing agent, and extruded through a die into the shape of the insulation board. The result is a board with consistent closed-cell construction that is rigid, sturdy, does not crumble, does not absorb water, and has an R-Value of 5.0 per inch of thickness. For more information, click here to view the Extruded Polystyrene Foam Association website.
- Mark writes from Mount Albert, Ontario: "What is the difference between Celfort® 300 Extruded Polystyrene Rigid Insulation and Celfort® 200 Extruded Polystyrene Rigid Insulation?
- Are STYROFOAM Brand Extruded Polystyrene insulations suitable for acoustical control or sound absorption purposes?
- Can STYROFOAM* extruded polystyrene insulation be left exposed either inside or outside?