Low-modulus, Bitumen-Extended, Highly Elastomeric, Two-Component, Liquid Polyurethane Membrane

VELOSIT PU 455 is an economic, two component, chemically-cured, highly elastic, liquid-applied polyurethane liquid that cures to form a UV resistant, seamless and monolithic waterproofing membrane. 

Typical applications:

  • Foundations, basements and rafts
  • Plaza decks, podium slabs, planted roofs and flower boxes
  • Balconies, bathrooms and toilets
  • PU foam, metal roofs and cement board
  • Defective EPDM and asphalt membranes
  • Cut and cover tunnels


  • Low consumption
  • Excellent adhesion to a wide variety of substrates including metal roofs
  • Fast curing allows same day re-coating
  • Highly elastomeric; above 1015%
  • Used to seal large cracks prior to overall waterproofing application
  • Long pot life
  • Good abrasion resistance and excellent tear resistance
  • Excellent mechanical and chemical resistance


Here you can find detailed information about the selected VELOSIT product.

Technical Data Sheet Safety Data Sheet (A-Comp.) Safety Data Sheet (B-Comp.)

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