H4 Polymer

H4 Polymer is a modified hot poured joint sealant designed for the treatment of reinstatements and asphalt overlays giving greater flexibility to the joint.

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Where to use?

  • Transverse or longitudinal vertical joints
  • Patch repairs
  • Trench reinstatements
  • Drain or manhole frames
  • Kerb channels


Ensure that the joints to be sealed are clean and free from dust, fuel and oil spillage. The face of the joints should be dry with a surface temperature ideally of at least 10°C. Do not apply to icy surfaces or in rain.


H4 Polymer must be heated before use.

For best results, use a heating kettle with an indirect heating system such as hot oil. Ensure that H4 Polymer doesn’t exceed 200°C and that the oil does not exceed 230°C. When hot, pour either from a watering can or direct from the melting kettle via a pressure fed heated hose with a special nozzle. The 25kg tin pails are not suitable for placing on or over direct heat (i.e. gas or wood fire).


For a 40mm vertical joint face and a 2mm coated thickness of H4 Polymer: 0.08kg of H4 Polymer seals approximately one linear metre of joint or a 25kg pack seals approximately 300 linear metres of joint.


H4 Polymer is supplied in 25kg metal pails with handles (24 x 25kg per pallet) being leak proof, these pails are particularly convenient for use during hot weather.


Keep free from frost and extremes of heat. Do not stack. Do not store in direct sunlight.


H4 Polymer is a CE Marked paving grade bitumen complying to BS EN14023:2010 which also complies with BS 594987 clause 6.8 Joints. H4 Polymer is suitable for jointing as required in Clause 903.22(ii) of Volume 1 of the Specification for Highway Works.



  • Wear suitable protective clothing (heat resistant gauntlet gloves, overalls, protective footwear, face visor)
  • DO NOT allow water to contact hot material
  • DO NOT exceed maximum safe heating temperature

If molten material contacts skin:

  • DO NOT attempt to remove
  • Immerse affected area in cold running water for at least 10 minutes
  • Seek medical advice without delay
  • This product is hazardous for transportation when carried at temperatures above 100°C


For full safety information, please download the H4 Polymer Safety Data Sheet 12 in the link available below on this page.
CE Marking Information H4 Polymer and Declaration of Performance H4 Polymer documents are also available to download on this page.
For further information please contact us using the contact details provided on the page.