MasterRoc MSL 345

Spray applied waterproofing membrane for tunnel concrete composite shell lining

MasterRoc  MSL  345  is  an  EVA  polymer  based  sprayable membrane  for  the  waterproofing  of  underground  concrete structures. It is spray applied in a sandwich structure between two sprayed concrete / cast concrete layers, creating a double bonded composite shell lining. It is flexible and has very high bond strength properties on both sides of the membrane. It is an  effective  alternative  to  conventional  waterproofing  sheet membranes.

As  a  double  bonded  system,  this  provides  excellent  water tightness, preventing the development of water migration on both sides of the membrane.

As with all spray applied membranes, it is not possible to seal against water ingress through the substrate. In such cases, a drainage  system  or  local  water  management  using  drainage pipes should be used in combination with MasterRoc MSL 345. However, it can be applied to damp substrate (if there is no running water).