DPM Damproof Membrane Multipurpose 4mm

Polyethylene encasement is the easiest, most economical and most effective method of corrosion protection for Ductile Iron pipe and fittings installed in aggressive soils. It is simply a tube or sheet of polyethylene film that is slipped over or wrapped around the exterior of the pipe and/or fitting at the job site prior to installation. Since its initial testing in 1951, polyethylene encasement has been installed and used successfully on thousands of miles of gray and Ductile Iron pipe throughout the United States. This has led to the development of an international standard (I. Polyethylene Encasement (polywrap) was first used in 1958 and since that time has been used to protect millions of feet of ductile iron pipe. It is the most economical and successful method of corrosion control for ductile iron pipe. Standard Polyethylene Encasement works by depleting the oxygen in the water under the wrap and over time the initial corrosion dissipates to a negligible corrosion rate. V-Bio™ contains both a corrosion inhibitor to eliminate this initial corrosion rate, and also contains a biocide to address any corrosion causing bacteria which may be present in uniquely severe corrosion environments. V-Bio Polyethylene Encasement inhibits and stops the initial growth of corrosion cells caused by anaerobic bacteria under the polywrap with a proven anti-microbial. The anti-microbial is part of a 3 layer co-extruded linear low density polyethylene (LLDPE) film that features an inside surface that is infused with a proprietary blend of an anti-microbial to mitigate microbiologically influenced corrosion (“MIC”) and a volatile corrosion inhibitor (“VCI”) to control galvanic corrosion. This process, together with the added protection offered by two additional outer layers of special LLDPE film, ensure long life of the protection system. With three types of corrosion protection fused into one 8 mil thick film, it is truly the next generation of Polyethylene Encasement.