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NBS Source


Suitable for use with:

  • All structural concrete mixes including ready-mix, precast and spray-applied application.
  • Below-ground structures (habitable and car parks) including lift pits, slabs, liner walls and capping beams.
  • Podium decks and green roofs.
  • Water-retaining structures (including swimming pools).
  • Volatile ground conditions e.g. waste transfer stations.


A dual-purpose, multi-component powdered, hydrophobic, pore-blocking admixture comprising a single dosage pack providing durability and waterproofing properties to all concrete mixes. Suitable where long-term durability is critical and/ or exposure to aggressive environments is present.

Features and benefits:

  • Can be used as a single waterproofing system.
  • Suitable for use with all CEM1 mixes (100% ordinary Portland cement (OPC)) and cement replacement mix designs using ground-granulated blast-furnace slag (GGBS), pulverized fuel ash (PFA) and Microsillica as well as Cemfree mixes.
  • Provides a permanent, significant reduction in permeability, and a reduction in carbonation of concrete which helps to increase long-term durability.
  • Reduces bleed, segregation, efflorescence and staining.
  • Improves resistance to sulfate, chloride and chemical attack including leachates. Reduces shrinkage, enhances protection against frost attack, and provides sound concrete for the protection of reinforcement steel.
  • BDA KIWA-approved.
  • UKAS accredited.

General information




Pr_20_31_03_98 Water-retaining concrete admixturesPrimary


E10/418 Proprietary admixture

E11/435 Proprietary admixture

Specification data - Water-retaining concrete admixtures

Performance requirements

To BS EN 934-2, Table 4.

Third party product certification

BDA KIWA - approved.


The PUDLO System Concrete Standards
& Best Practices

The PUDLO System Concrete Standards & Best Practices

Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

PUDLO CWP 8kg BBA Certificate - Nov 2020

BBA Agrément Certificate

BBA Agrément Certificate

PUDLO CWP BBA Certificate