Polyguard produces systems which protect insulated pipe and ductwork. We’ve recently introduced optimal “Cold Service” System including Dow Styrofoam® XPS Insulation and Polyguard PolyPhen® Insulation. These systems are ideal for ammonia refrigeration and other cold pipe applications where long term performance is critical. In addition to Dow insulation, it uses Polyguard’s patented Reactive Gel corrosion inhibitors, ZeroPerm™ or Insulrap™ vapor barriers and can be covered against the weather by our Alumaguard® family of exterior claddings.