Polyfoam SS‑45 is a two‑component, spray‑applied polyurethane foam used for waterproofing roofs and other substrates. It forms a rigid, monolithic barrier with a nominal density of about 45 kg/m³ and can be applied when surface temperatures are roughly 10 °C to 50 °C. The system uses an HCFC blowing agent and is based on a polymeric MDI chemistry.
