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Newton 503 M5 - Waterproofing membrane

  • Newton 503 (M5): For use on walls, vaulted and sloping soffits, and floors.
  • Newton 503 Mesh (M11): For receiving plaster or render to walls.


High quality cavity drain waterproofing membrane, available in two variants.

Newton 503 is inert and non-polluting to drinking water, highly resistant to water, alkalis, saline solutions and organic acids, and not affected by minerals and hydro-carbons, and is resistant to bacteria, fungi and other small organisms. Newton 503 also exhibits high compressive loading stability.

Consult manufacturer's literature for relevant preparation and surface protection.

Features and benefits:

  • Used within Newton System 500, the internally applied waterproofing system that includes Newton drainage and pumping systems.
  • Does not require extensive and damaging preparation to the wall surface.
  • Quick installation.
  • Provides vapour control, and when used with humidity control systems, is capable of delivering an environment to all levels within a Grade 3 environment to BS 8102: 2009.
  • Resistant to chemically aggressive groundwater, efflorescing salts and hydrocarbon contamination.
  • Rot-proof and resistant to root penetration.
  • Shallow stud profile means the membrane is suitable for use in areas with minimal available space.
  • Guaranteed against deterioration for 30 years, and has a life expectancy of at least 50 years (has a service life that can be equal to the design life of the structure).


  • Newton 503 (M5): For use on walls, vaulted and sloping soffits, and floors.
  • Newton 503 Mesh (M11): For receiving plaster or render to walls.

Suitable substrates:

- Walls:

  • Concrete.
  • Brick.
  • Concrete block.
  • ICF (with longer fixing plugs).

- Soffits:

  • Concrete.
  • Brick (arched or vaulted).

- Floors:

  • Concrete rafts or slabs.
  • Newton Fibran XPS 500-C closed-cell extruded polystyrene insulation.

General information



High density polyethylene (HDPE)


3.5 x 2000 x 20000 mm

Uniclass 2015
Pr_25_57_51_74 Rubber studded sheetsPrimary

J40/290 High density polyethylene/ polypropylene studded cavity drain membrane

J40/295 Geocomposite studded cavity drainage/ venting membrane

J40/47 High density polyethylene/ polypropylene studded cavity drain membrane

Specification data - Rubber studded sheets
Product Reference

Newton 503 (M5)

Plain variant.

Newton 503 Mesh (M11)

Meshed variant.

Standard product features


High density polyethylene (HDPE).


White/ translucent.


  • Overall size: 2 x 20 m (w x l).
  • Height: M5: 3.5 mm; M11: 3.6 mm.
  • Membrane thickness: M5: 0.6 mm; M11: 0.7 mm.
  • Stud depth: 2.9 mm.

Technical characteristics:

- Features:

  • Density: 500 g/m².
  • Softening temperature: 126°C.
  • Service temperature: -40 to +80°C.

- Installed performance:

  • Compressive strength (temporary loading, to EN ISO 25619-2): 320 kPa.
  • Thermal conductivity (to EN 12667): 0.461 W/m·K.
  • Water vapour diffusion resistance (to BS EN 1931) – Sd value: >604 m.
  • Water vapour diffusion resistance (calculated from Sd value): 1 208 000 μ/ 3020 MNs/g.
  • Resistance to fire (to BS EN 13501-1): Euroclass E.
  • Chemical and oxidation resistance (to EN14030/ EN ISO 13438): 100% (excellent resistance).

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