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non-woven drainage membrane / extruded polystyrene / protection / drainage



  • Type:


  • Material:

    extruded polystyrene

  • Function:

    protection, drainage, insulating

  • Applications:

    foundation, wall


INSUL-DRAIN® is a FOAMULAR® extruded polystyrene product that incorporates the features of insulation, drainage and protection board in a single product. Its easy to install, without the need for special tools or equipment, and the products compressive strength and long-term moisture resistance properties mean years of reliable performance on below grade foundation walls even under extremely harsh conditions. Some of the main characteristics of FOAMULAR® INSUL-DRAIN® extruded polystyrene insulation are:

Precision-cut channels drain water from vertical foundation walls while completing total insulation envelope.
Durable filtration fabric prevents soil from clogging channels.
48" x 84" and 48" x 96" sizes cover more square footage faster and minimizes joints between boards.
Acts as protection course for waterproofing membrane.
Tongue & groove edges provide proper board alignment and helps seal joints.
Top-edge horizontal channel permits unobstructed water flow between vertical courses of boards.
High R-value, exceptional moisture resistance and high compressive strength of FOAMULAR® extruded polystyrene insulation.
UL Classified foam core meets ASTM C578 Type IV specifications.

Owens Cornings FOAMULAR® extruded polystyrene insulation is an ENERGY STAR® qualified product.