NBS Source
Newton 803


Suitable for use as a damp-proof membrane to isolate the wall finish from the damp wall where a meshed surface for plaster or render is not required.


A high quality damp proofing membrane for use above the ground as an alternative to Newton 803 Newtonite and 805 Newlath, where a meshed surface is not required as a surface for direct plastering or rendering.

The product is typically used where the wall finish to the damp proof membrane is timber battens, a dry-lining frame or block wall. It is 0.65 mm thick and has a pattern of raised 3 mm studs. The studs face the wall and create air channels that allow for vapour equalization to take place between the membrane and the wall. Newton 803 is light, clean and easy to handle, and is guaranteed against deterioration for 30 years and has a life expectancy of at least 50 years.

Consult manufacturer's literature for relevant surface preparation information and for protection of the coating once applied.

Features and benefits:

  • Resistant to efflorescing salts and hydrocarbon contamination.
  • Does not require extensive and damaging preparation to the wall surface.
  • Isolation of wall finish from the damp wall.
  • Can be cut with a sharp knife, scissors or shears.
  • Quick to install.
  • The membrane is inert and is highly resistant to water, alkalis, saline solutions and organic acids, and it is not affected by minerals. It is also resistant to bacteria, fungi and other small organisms.
  • Shallow stud profile for use in areas where space is at a premium.
  • Rot-proof.
  • Suitable substrates include concrete, brick, and concrete blocks.
  • Has a service life that can be equal to the design life of the structure.

General information


Non-Meshed Damp Proofing Membrane.





Dimpled mesh, studded finish


Membrane form


M19: 1000 x 10000 mm, M20: 2000 x 20000 mm (W x L)


Newton 803 and 803 Mesh are supplied with a product warranty of 30 years and have a life expectancy of at least 50 years (DIN 9001:2000)

Uniclass 2015

Pr_25_57_51_74 Rubber studded sheetsPrimary


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

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

Product range

Damp Proofing Systems

Specification data - Rubber studded sheets Enhanced data


To EN 12667, BS EN 13501-1, EN 14030 and EN ISO 13438.

Stud height

2.9 mm.

Sheet thickness

0.6 mm.

Performance characteristics


Fire performance

To BS EN 13501-1: Euroclass E.

Product Reference

Newton 803 (M19)

1 x 10 m.

Newton 803 (M20)

2 x 20 m.


Non-Meshed Damp Proofing Membrane.


500 g/m².


M19: 10 m² and M20: 40 m².


3.5 mm.

Vicat softening temperature


Packaged weight

23.0 kg.

Service temperature

-40°C to +80°C.

Compressive strength - Temporary loading

>320 kPa.

Compressive strength - Permanent loading

100 kPa.


0.461 W/mK.

Water vapour diffusion resistance – Sd value

>604 m.

Water vapour diffusion resistance – µ value

>1 208 000 µ.

Water vapour diffusion resistance

>3020 MNs/g.

Resistance to fire

Euroclass E.

Chemical resistance – Excellent


Oxidation resistance – Excellent



Newton MultiPlug (A1).


0.6 mm.

Joint seal/ repairs

Newton Overtape.

Environmental information



Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

British Board of Agrément (BBA) - certficate

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