Newton 104 is applied to the surface of concrete to provide in-depth protection against the movement of moisture through the capillaries and hairline cracks within the concrete. It consists of Portland cement, specially treated quartz sand and a compound of active chemicals. Newton 104 is supplied in powdered form and is either sprinkled onto fresh concrete or is mixed with water as a carrier and brush or spray applied as slurry for application to fully cured or older concrete or vertical surfaces.

The active chemicals within Newton 104 combine with the free lime and moisture present within the capillaries to form insoluble crystalline complexes which effectively block the capillaries and any minor shrinkage cracks to prevent any further movement of moisture to provide a totally dry surface to the concrete.

Because Newton 104 penetrates deep into the concrete, it does not leave a physical membrane to the surface of the concrete element and so is completely unaffected by loadings imposed by further elements of the build. New concrete elements are placed ‘concrete to concrete’ with no potential for slip or separation as is the case with physical membranes. This makes Newton 104 particularly useful as a means of isolating moisture within pile caps, ring beams and kicker joints to internal walls.


  • Ease of application – sprinkled onto new concrete and applied as a simple slurry to vertical and cured concrete.
  • Permeates deep into the concrete to form a barrier against moisture that cannot be damaged or punctured.
  • Loading capabilities only limited by the strength of the concrete.
  • No physical membrane – subsequent concrete placement is ‘concrete to concrete’.
  • Can be applied by airless spray for quicker application.
  • Concrete treated with Newton 104 remains vapour permeable, allowing the structure to breathe.
  • Easy to detail and specify as the concrete surface becomes the membrane.
  • Very cost effective alternative to conventional physical membranes.
  • Sealing of cracks up to 0.3 mm resulting in dry concrete with less reinforcing steel requirement.


Technical details:

  • Colour: Grey/ white.
  • Bulk density: 1.25.
  • Initial setting time at 20°C: 60 minutes.
  • Tensile adhesion (to BS EN 1015): 0.70 N/mm.
  • Water permeability: < 5.0 x 10-13.
  • Water penetration (to DIN 1048-5): < 20 mm.
  • Fire Rating (to BS EN 476-4): Non-combustible.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-55-50/460 Crystallization active slurry mortar

Product specification

An important note about specifying



Newton Waterproofing Systems


+44 (0)1732 360095

Product reference

Newton 104

Manufacturer details

Newton House,
17-20 Sovereign Way,
Kent, TN9 1RH
Tel +44 (0)1732 360095
NBS Plus
NBS National BIM Library