Flexiseal HD – Reinforced Bituminous Tape

Flexiseal HD

Flexiseal HD - Reinforced Bituminous Tape

Stress relieving and waterproof membrane

Flexiseal HD is a composite self-adhesive membrane incorporating high performance moisture and water resistant rubberised bitumen with an integral robust, puncture & heat resistant polypropylene reinforcing weave.

It is supplied in rolls intertwined with special release paper that protects the adhesive surface until ready for use and allows for easy handling during installation. The release paper is removed during installation. The membrane is self-adhesive and cold applied.

FLEXISEAL HD applications include:

  • Waterproofing

    As a waterproofing membrane in plazas, bridges, vehicular traffic structures and car parks overlaid with an Asphaltic Concrete (AC). It’s adaptable for either new construction or for repair applications.

  • Restoration

    Restoration of concrete pavements with AC overlays as a stress relieving membrane preventing reflection cracking over transverse and longitudinal joints in concrete and in treated sub-bases.


  • Woven reinforced

    Provides dimensional stability and resistance to damage.

  • Rubber/bitumen

    Self-adhesive, elastic compound provides bonding and transmission of braking forces to substrate, allows healing of small punctures.

  • Flexible

    Easily applied. Conforms to changes in profile and accommodates shrinkage cracks up to 0.6mm.

  • Cold applied

    No heating plant or hot bitumen bedding adhesive required, self adhesive overlaps provide continuity.

  • Release Paper

    Protects the adhesive surface until ready to be used.

  • Robust

    Accepts road paving machinery.

  • Pre-formed

    Guaranteed thickness, not subject to site variation.


  • The required concrete surfaces must be smooth in order to achieve proper adhesion.
  • Use a roller or airless spray gun to apply Flexiseal Primer to all concrete or masonry surfaces.
  • Ensure weather conditions are fair and above 5 °C, before applying as a  waterproofing membrane.
  • Once applied, immediately place AC overlay.
Code Roll/Product Size
6113070 Flexiseal Tape HD 150mm x 10m
6113071 Flexiseal Tape HD 250mm x 10m
6113134 Flexiseal Tape HD 500mm x 10m
6113243 Flexiseal Primer 20L
6113117 Flexiseal Primer 4L

Further Information

Flexiseal HD Brochure