Preprufe 300R is unique composite sheets comprised of a robust HDPE film, Preprufe's Advanced Bond Technology creates a permanent and integral bond to concrete which prevents ingress or migration of water into and around the structure, a weather resistant coating and an aggressive pressure sensitive adhesive. Unlike conventional systems which are vulnerable to water tracking between the unbonded membrane and structure.

It preventing both the ingress and lateral migration of water while providing a robust barrier to water, moisture and gas.