Polyurethane Based, Two Component, Applied Horizontally, Continuously Elastic, Joint and Dilatation Mastic

FOX PURMAX® MASTIC is a polyurethane based, two-component, high performance, continuous elastic material specially formulated for filling and waterproofing for dilatation and wide joints. After curing, it is a high performance joint and dilatation sealant with high waterproofing resistance against all kinds of weather conditions, chemicals, resistant to jet fuel, diesel fuel and oils, with effective waterproofing.

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Fields of Application

  • In filling all kinds of horizontal dilation spaces for the purpose of insulation,
  • Filling of all kinds of expansion and wide joints,
  • Airport runways and aprons,
  • Energy plants,
  • Highways, bridges and viaducts
  • Fuel storage tanks,
  • Gas stations,
  • On industrial floors exposed to pedestrian and heavy vehicle traffic,
  • Stadiums,
  • Terraces and balconies,
  • In filling the joints of the irrigation channels,
  • Used horizontally in gypsum, cement chip and OSB board panel joints.


  • It has excellent resistance to aging, microorganisms, fungi and various chemicals.
  • It is suitable for drinking water.
  • Can be painted.
  • Resumes elasticity up to -40°C.
  • Resistant to saline and fresh water.
  • It resists high tensile, flexing and tearing forces.
  • High abrasion resistance.
  • It gives excellent results even in dilatation spaces over 10 cm width.
  • It is resistant to chemicals and petroleum derivatives.