Laydex Polythene 1200g is designed for use on solid concrete ground floors to protect buildings against moisture damage. It can also be used as a concrete underlay and as a curing blanket. This quality polythene resists attacks by acid or alkaline soils and does not deteriorate when in contact with water. It will last the lifetime of the concrete slab in which it is installed. The product serves as a moisture and vapour barrier for concrete slab ground floors. It is also suitable for use as a concrete underlay and curing blanket. The product is available in a size of 3.5mt x 15mt.