PVC coated MDF, or Polyvinyl Chloride-coated Medium Density Fiberboard, is a type of plywood that has been treated with a waterproof coating to make it more resistant to moisture. This makes it ideal for use in areas where there is high humidity or occasional exposure to water. It can be used both indoors and outdoors for furniture, cabinets, shelving units and other woodworking projects. PVC coated MDF offers the same strength benefits as regular MDF but with added protection against moisture damage. The protective coating also reduces the amount of wear on the board over time so it looks better longer. In addition, because PVC coated MDF is slightly heavier than standard MDF boards, they are less likely to warp when exposed to moisture or damp conditions.