Cross-Flo Jacketing

Johns Manville Cross-Flo^® Jacketing is a unique innovation for ambient and hot systems, designed to help mitigate the potential for corrosion under insulation (CUI). It has an embossed pattern engineered to promote cross-directional flow (CDF), providing a path for unwanted liquid to more rapidly reach the low point of a system and exit the jacketing through a weep hole or drainage port. In addition to numerous technical benefits, Cross-Flo Jacketing has a distinctive aesthetic appearance and comes standard with a 3-mil thick polyfilm moisture barrier heat laminated to the interior surface to provide additional protection against corrosion.