For decades, Polyguard has had millions of square feet of successful waterproofing projects with pre-applied Underseal and our post-applied 650 membranes. Today, the revitalization of urban areas has created new demands. We are now reclaiming land that had been considered previously uninhabitable. By building on the success of Underseal and 650 membranes, we have purpose-built the CR™ System by fortifying critical components to combat the chemical attack of contaminants in the soil.

Underseal® CRM™ Chemical Resistant Membrane

Underseal® CRM™ Chemical Resistant Membrane is a 85-mil, pre-applied membrane that has been designed and tested to withstand elevated concentrations of soil, water and vapor contaminants. When installed below the slab and behind vertical walls, CRM™ creates a barrier preventing water & vapor from transmitting into the structure.

  • Superior Protection: 3-layers of waterproofing protection.
  • Superior Adhesive Bond: Creates a strong adhesive bond when the static load of the concrete slab causes sealant/adhesive compound.
  • Superior Adaptability: Flexible material that adapts to jobsite irregularities for ease of installation
  • Superior Joints: Fully-adhering, watertight, chemical and vapor resistant laps.
  • Provides a barrier that has been designed and tested to withstand elevated concentrations of contaminants typically found in construction sites which may be considered brownfield projects.

Ultra CRM™ Chemical Resistant Membrane

Ultra CRM™ Chemical Resistant Membrane is a 60-mil, post-applied  membrane designed for poured concrete foundation walls, tunnels, parking garages and related applications where chemical resistant waterproofing is critical.

  • Superior Barrier: Provides a barrier that has been designed and tested to withstand elevated concentrations of contaminants typically found in construction sites which may be considered brownfield projects.
  • Quality Composite: Proprietary adhesive compound bonded to a Chemical Resistant Membrane ensures uniform thickness and performance.
  • Precision: Factory controlled side seams combined with CR™ Seam Tape ensures monolithic application with enhanced seam integrity.
  • Fully Adhered: Enhancing the durability of the membrane and mitigating lateral water migration.
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