TopArmor PM-P Series is a watertightness membrane for pool liner with polyester reinforced, multi layer sheet based on Polyvinyl Chloride (PVC) with mould & fungus resistance and non-toxic properties, it is compliance to the EU Restriction of Hazardous Substances (RoHS) Directive. It is with simple installation, economical pricing and durable quality of watertightness to lay on tiling and concrete surfaces, the base and wall on pool must be smoothed and levelled, the deviation of level must be less than 1cm/10m and the gap of cracked surface must be less than 2mm. TopArmor PM-P series has varieties of product types and specification to suit your needs.