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Newton Hydrobond 2K-Flex Primer

Save £10.36 inc.VAT

Size: 10KG
Sale price£53.34 inc.VAT Regular price£63.70 inc.VAT


Primer for HydroBond 2K-Flex

A fast-drying bitumen emulsion primer and bonding agent that is applied to the substrate prior to the application of the Newton HydroBond 2K-Flex reinforced bitumen waterproof coating. The product adheres well to concrete, masonry, plaster and most other common construction substrates.

For use with:-

HydroBond 2K-Flex

A radon gas certified, bitumen/rubber waterproofing membrane used primarily for the external waterproofing of earth-retaining structures such as basements and foundation walls. Forms a thick, highly flexible barrier to water ingress that can be applied to fill voids, cracks and joints.

Environmentally friendly and solvent-free, HydroBond 2K-Flex consists of two components; a bitumen emulsion and a reactive powder. These two components chemically react when mixed to produce a firm, yet still highly flexible coating that can be applied by trowel or by airless spray machine. Adhering insulated panels to concrete, masonry and thoroughly dried thick bituminous coatings, 2K-Flex dries quickly and is rain-fast after a short period.

HydroBond 2K-Flex requires two ancillary products, HydroBond 2K-Flex Primer and HydroBond 2K-Flex Mesh.

Product Data

HydroBond 2K-Flex Primer

Product code: HB-2KP

Packaging: 5 Litres

Application rate: 0.2 Litres/m2

Key Benefits
  • Thick coating, fully-bonded seamless waterproofing membrane with excellent crack-bridging capabilities.
  • Particularly easy trowel application due to low material weight.
  • Fast reaction time due to the special powder catalyst.
  • Highly flexible with 2 mm crack bridging due to high-quality polystyrene and polymer modification.
  • Quick-drying and rain-fast after a short period.
  • Solvent-free, non-toxic and odourless.
  • Non-flammable – No VOCs.
  • Radon gas resistance.
  • Sprayable with suitable equipment.
  • Adheres insulating panels to concrete, masonry and thoroughly dried thick bituminous coatings.
Typical Waterproofing Applications
  • Continuous Type A waterproofing and radon protection of retained structures, together with Newton HydroBond pre-applied membranes.
  • Type A waterproofing and radon membrane for basement, foundations and earth-retained walls.
  • Smoothing of irregular surfaces prior to application of bitumen-based membranes.
Technical Data
 Cured Performance  Result
Colour Black
Membrane thickness – two coats  4.0 mm
Compressive strength – Class C2A 0.30 MN/mm2
Crack bridging ability (no reinforcement) – Class CB2  >2 mm
Resistance to fatigue movement – 1000 actions @ -10°C  Pass
Dimensional stability at high temperature – no sliding  Pass
Flexibility at low temperature  Pass
Water vapour resistance – SD value  26.3 m
Water vapour resistance – μ value 6575 μ
Water vapour resistance  132 MNs/g
Water tightness -W2A  0.075 N/mm2
Water resistance – 21 days at 21°C  Watertight
Durability of water tightness and fire behaviour  Pass
Radon gas diffusion resistance (4 mm membrane)  1.13 x 10-11 m2/s
Reaction to fire classification (Euroclass) E

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