The gauge of the DPC (Damp Proof Course) in the reference provided is 2000 gauge.
This refers to the thickness of the DPC material. The reference specifies a "500mu DPC (2000 gauge)." The term "gauge" is a unit of measurement used to indicate the thickness of plastic sheeting, with a higher gauge number generally indicating a thicker and more durable material. In this case, the 2000 gauge DPC indicates a robust barrier against rising damp.
