Water Proofing

Many building surfaces require the use of waterproofing or damp proofing membranes to protect the building from moisture intrusion. XPS insulation products are applied over the membrane to enhance the performance of both horizontal and vertical applications.

XPS waterproofing insulation products are designed to:

  • improve thermal performance (insulation)
  • prevent condensation on interior surfaces (moisture protection)
  • enhance drainage (waterproofing protection)

XPS also protects the membrane from backfill damage and traffic loads on horizontal decks.

In horizontal applications, XPS insulation helps extend the waterproofing / damp proofing membrane’s life by reducing thermal stress on the membrane caused by temperature cycles.

XPSA Featured Articles

Considerations for Specifying Rigid, Cellular Polystyrene Insulations in Various Applications (PDF)

By Rob Brooks, Tiffany Coppock, Matt Dillon, Mike Fischer; Meng Guo, Valentina Woodcraft - IIBEC Interface

Absorption d’humidité dans l’isolant de polystyrène (PDF)

John Woestman, Absorption d’humidité dans les isolants de polystyrene, FORMES, Vol. 18, N1.

Extruded Polystyrene in Protected Membrane Roof Assemblies (PDF)

By John Woestman, Director of Codes and Standards, XPSA - The Construction Specifier

Moisture Absorption in Polystyrene Insulation: Effects on In-Service Design R-Values (PDF)

By John Woestman, Director of Codes and Standards, XPSA - IIBEC Interface