Hyperdesmo PB 1K®


One component, polyurethane - bitumen liquid membrane for flashing, waterproofing & protection.


HYPERDESMO®-PB-1K is a quick-curing, one
component, thixotropic, bitumen-extended
polyurethane fluid. It produces a hydrophobic,
elastic membrane with very strong adhesion to
most types of substrates, as well as bituminous,
and excellent mechanical and chemical esistance
properties. It is ideal for application on vertical
surfaces: No running, no bubbling.

It is based on pure elastomeric hydrophobic
polyurethane resin and is extended with
chemically polymerised virgin bitumen.


Apply with brush or spatula. Total consumption:
1.5 kg/m2 (or 1.5 lt/m2) in two coats.


Recommended for:

waterproofing and protection of:

  • gypsum and cement boards

  • asphalt membranes (for repair also)

  • cementitious substrates

  • roofs

  • light roofing made of metal or fibrous cement

  • basements

  • foundations

  • closed spaces for unsound substrates


Shelf Life:

Can be kept for 12 months minimum in the original unopened pails in dry places and at temperatures of 5-25°C. Once opened, use as soon as possible.


1kg, 15kg, 20kg Pails


Hyperdesmo PB


Features & Benefits

  • Thixotropic: Easily applied on vertical surfaces and complex shapes without running or bubbling

  • no thinning required, but Solvent-01 may be used

  • fast curing

  • Excellent adhesion on almost any type of surface, with or without the use of special primers.

  • Excellent thermal resistance, the product never turns soft. Max service temperature 80°C, max
    shock temperature 150°C

  • Resistance in the cold: The film remains elastic even down to -40°C.

  • Outstanding mechanical properties, high elongation, tensile and tear strength, high abrasion resistance.

  • Excellent chemical resistance

  • Effective humidity barrier



Apply with brush or spatula. Clean the surface using a high pressure washer, if possible. Remove oil, grease and wax contaminants. Cement laitance, loose particles, mould release agents, cured membranes must be removed. Fill surface irregularities with the necessary product.


Plan for a recoat time of 6 to 24 hours between coats. 

For further details please refer to the 


Technical Data Sheet:

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