1.1 This specification covers poly(vinyl chloride) (PVC) flexible sheeting which is used without mastic, bedding, or coating for construction of concealed water-containment-membranes in applications where there is potential for costly secon This specification covers poly(vinyl chloride) flexible sheeting which is used without mastic, bedding, or coating for construction of concealed water containment membranes that include fountains, pools, planters, shower and safe pans, tile tubs, or si