Fire Resist Barritech NP60 is a synthetic polymer, non-asphalt air/vapor barrier membrane. The product is applied to concrete masonry unit (CMU) wall surfaces in cavity wall construction. Fire Resist BarritechNP60 is a one-part, air-drying product that is spray-applied at a nominal 0.060" (60-mil) dry thickness. The product cures to a tough, rubberlike consistency. The extra-high film thickness makes Fire Resist Barritech NP60 ideal for application over CMU surfaces. The membrane thickness and rubber-like properties enable Fire Resist Barritech NP60 to bridge gaps, seal around penetrations and cover a variety of surface irregularities. Fire Resist Barritech NP60 functions as an air barrier, vapor barrier and water-resistive barrier.