OPM Company Limited
Box of HP 479 concrete joint sealant

TISI 479-2541 certified

HP 479

Hot-applied elastic joint sealant for concrete

HP 479 is a hot-poured joint sealant — a polymer-modified asphalt compound engineered for horizontal concrete joints, new and old concrete roadways, and general expansion joints.

Key features

  • Heat-stable — won't sag or flow in high temperatures
  • Strong adhesion, stays flexible and crack-free in the cold
  • Withstands traffic load; compatible with any melting kettle
  • Can be re-melted and reused across multiple pours

How to use

  1. 1

    Prep the joint: clean it thoroughly, free of dust, and fully dry.

  2. 2

    Heat HP 479 in a double-jacketed kettle (no need to remove the plastic wrap or add sand) until molten, max 180°C, then pour into the joint at a recommended 140–150°C.

  3. 3

    Let it cool for about 4–5 hours before reopening to traffic. Clean tools with kerosene or turpentine right after use.

Use cases

Sealing horizontal concrete joints
Sealing horizontal concrete joints
Sealing cracks in road surfaces
Sealing cracks in road surfaces

Product & delivery photos

HP 479 stock ready to ship
Usage instructions printed on the HP 479 box
HP 479 in 15 kg boxes