Bituminous Membrane for Water Insulation



INSUPRENE is an elastomeric Modified Bitumen Membrane used for various waterproof applications. It is manufactured in a high-tech calendaring process, which involves the saturation and coating of a polyester carrier with an SBS elastomer-modified bitumen compound. The SBS modifiers are used to improve the thermal, chemical, and aging properties of the bitumen compound. Meanwhile, the mechanical characteristics such as tensile strength, elongation, and tear resistance are boosted by the non-woven polyester carrier, which acts as a reinforcement to the product.


INSUPRENE – Bitumen Membrane Surface Finish

The lower surface of the membrane is laminated with a thin thermo-fusible polyethylene ‘burn-off’ film. The membrane is available with a wide range of upper surface finish options including different colored slates, aluminum foil, sand, and polyethylene film. (click here to see the color guide)



  • Absolute impermeability to water
  • High chemical resistance to alkaline solutions, light acidic solutions, and bacteria
  • Thermal resistance under a wide range of temperature fluctuation
  • Excellent U.V. resistance when the surface is finished with slates
  • Ease of adhesion to a wide variety of surfaces
  • Applicable for above and below grade usages


INSUPRENE Membrane Characteristics



Flexibility at low temperature -22 to – 25 C
Thickness 4 mm
Softening Point (Ring & Ball) 110 C


Related Applications

INSUPRENE membranes are used for a wide variety of waterproofing requirements and in applications where the membrane is subject to constant movement and high stresses, such as:

  • Roofing Insulation
  • Sloped and flat roofs Insulation
  • Insulation for tunnels, wet areas, swimming pools, and toilets
  • Foundations and underground structures Insulation



INSUPRENE Modified Bitumen Membranes should be stored in an upright position, dry, flat, and ventilated storage area away from direct sunlight.



Please refer to the INSUTECH Applicator Guide for complete instructions on the application of the product.


Send Inquiry ..