H4 Polymer Bitumen Block

Polymer Bitumen joint sealant

H4 Polymer Bitumen is a hot poured elastomeric joint sealant designed for the treatment of reinstatements and asphalt overlays meeting the requirements of the TII Specification for Roadworks Series 900 Section 10.1.8


H4 Polymer Bitumen Block

Why Use H4 Polymer Bitumen Blocks?

  • Effective
    Specially formulated to seal the vertical faces of horizontal pavement joints.
  • Convenient
    H4 Polymer blocks are supplied in 25kg siliconized, easy strip cartons. These are leak proof when kept upright.


  • Ensure the joints to be sealed are thoroughly cleaned and free from dust, fuel and oil spillage.
  • The face of the joints should be dry with surface temperature ideally at least 12°C. Do not apply to icy surfaces or in rain. (NB if joint has to be treated in damp conditions, use COLAS RS Bitukold – a pourable, cold applied edge sealant).

  • Keep free from frost and extremes of heat. In the summer, store cartons in a shaded area to avoid leakage.
  • Do not stack.

  • H4 Polymer Block must be heated before use. For best results, use heating kettle with an indirect heating system such as hot oil. Ensure that H4 Polymer does not exceed 180°C and that the oil does not exceed 240°C.
  • When hot, pour either from a can or direct from the melting kettle via a pressure fed heated hose with a special nozzle.
  • Do not allow water to come into contact with the hot molten bitumen.

For a 40mm vertical joint face, and a 2mm coated thickness of H4 Polymer: 0.08kg of H4 Polymer seals one linear metre of joint or a 25kg pack seals 300 linear metres of joint.
Note: these spread rates do not include wastage or allowance for overbanding.

H4 Polymer bitumen is suitable for jointing as required in TII Specification for Roadworks Series 900 Section 10.1.8 and complies with EN 14023.

For full safety information, please refer to Safety Data Sheet for Polymer Bitumen.

Bitumen Emulsions