HD – 250 System


250 MIL Hybrid Waterproofing Underlayment

The Pli-Dek HD-250 System is a hybrid waterproofing underlayment system for plywood corridors, balconies, and roof decks that are designed to receive a concrete topping or pavers. This system provides superior performance with its unique dual waterproofing layers. The first layer is an innovative construction coat consisting of metal lath reinforced polymer modified cement. This high performance, 6,000 psi construction coat offers early waterproofing protection during the course of construction.


  • Installed By Certified Applicators
  • Innovative 6,000 psi Construction Coat
  • Early Protection During Course of Construction
  • Incorporates A Flexible Cold Rubber Membrane
  • Complete thickness of 250 mils or greater
  • Eliminates Inherent Detailing Issues
  • Can be applied in conjunction with the PMA, HR and CR Systems

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Contact Pli-Dek Systems, Inc.

41610 Date St #104
Murrieta, CA 92562
Toll Free: 800-364-0287
Fax: (951) 834-9551

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