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Coating Applicators & Support  Experienced UK coating applicators for liquid coatings and industrial repairs. Qualified technical support Tel: 01268 472358

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Newton HydroBond 403 Plus (HBGB)

Save £54.88 inc.VAT

Size: 20m x 1.5m
Sale price£744.22 inc.VAT Regular price£799.10 inc.VAT


A high performance, self-healing membrane with a locking fleece on the inner surface and a hydrophilic polymer coating externally. The membrane is BDA approved, NHBC accepted as Type A waterproofing, and the gas barrier variant provides resistance to radon, carbon dioxide and hydrocarbons.

HydroBond 403 Plus provides a complete waterproof envelope to the structure to achieve Type A (barrier) waterproofing suitable for Grades 1, 2 and 3 as defined by BS 8102:2022, are suitable for all below ground and earth-retained structures from domestic basements to the largest civil engineering projects, and can be used as part of the HydroBond® System with HydroBond 108-LM which is sprayed to the exposed walls of the basement after the temporary formwork is removed. Where space is tight, HydroBond 109-LM can be applied by roller or brush or small airless spray machine.

HydroBond 403 Plus can be used in conjunction with other Newton products to provide a coordinated and combined approach to the waterproofing of the whole structure that includes protection against water ingress to the deck, through construction joints, through and around service entries and to movement joints.

Correctly protected, the Newton HydroBond System will provide, under normal service conditions, a durable waterproof barrier for the life of the building to which it is installed; the expected lifetime of the building itself should be at least 60 years. The Newton HydroBond System is supported by BDA Agrément Certificate BAB 16-031/03/A and is accepted by the NHBC as a suitable waterproofing system for Type A Waterproofing to Grades 1, 2 & 3 – BS 8102:2022

  • As a continuous membrane to permanent raft and wall formwork such as the raft blinding and piled walls of reinforced concrete and earth-retained structures.


  • Concrete blinding.
  • Compacted type 1 hardcore.
  • Compacted sand.

The following can be placed above the blinding or hardcore prior to the installation of HydroBond 403 Plus:

  • Void former.
  • Clay heave board.
  • Closed-cell flooring grade insulation.
  • HydroBond 410 GeoDrain.


  • Existing structure.
  • Secant or contiguous concrete piles.
  • Metal sheet piles.
  • Diaphragm walls.
  • King post wall.
  • Sufficiently stable ground such as clay or chalk.
  • Temporary timber shuttering/formwork.
Technical Data
Installed Performance Results
Service temperature -40ºC to +100ºC
Adhesion to concrete 0.4 N/mm²
Elongation at break (Machine) 20%
Elongation at break (Traverse) 50%
Tensile strength (Machine) >250 N/50 mm
Tensile strength (Traverse) >200 N/50 mm
Resistance to static loading – 20 kg load Watertight
Resistance to impact – AI plate – 200 mm drop Watertight
Resistance to impact – EPS panel – 500 mm drop Watertight
Joint strength – Glued seam >100 N/50 mm
Resistance to tearing – Nail shank – MD** >150 N
Resistance to tearing – Nail shank – Across >150 N
Resistance to fire Euroclass E
Water vapour diffusion resistance – Sd value 68m

Product Data

Code: HB / HBGB

Packaging: Roll: 20.0m x 1.0m (HB) / 20.0m x 1.5m (HBGB)

Colour: White and Dark Blue (HB) / White and Light Blue (HBGB)

Area: 20m² / 30m²


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