SOPRASEAL LM 203 is a one-component, spray-applied, non-permeable air barrier membrane used in wall construction. SOPRASEAL LM 203 is a water-based, ultra-low VOC liquid product composed of a modified rubber formulation. This non-mable, non-permeable air barrier provides moisture protection behind wall claddings such as brick, siding, metal panels, EIFS, and stucco. Utilization of a slip sheet is required for stucco cladding.
