Newton 805 Newlath


Can be used as a damp-proof base for renders, plasters or dot and dab plasterboard, and as a damp-proofing system to deal with rising damp.

Suitable substrates include:

  • Concrete;
  • Brick;
  • Concrete block.

Suitable for wall finishes including:

  • Plaster;
  • Render;
  • Hydraulic lime;
  • Plasterboard bonded to the membrane with a propriety adhesive compound.


An internally applied, composite damp proofing membrane comprising of a high-density polypropylene membrane with a rot-proof polythene mesh heat-welded during the manufacturing process to the surface of one side. The meshed surface creates a mechanical key to allow the membrane to be plastered, rendered or to receive dot and dab plasterboard.

Newton 805 Newlath is 1.5 mm thick and has a pattern of raised studs linked by reinforcing ribs. The 5 mm studs face the wall and create air channels that allow for vapour equalisation to take place between the membrane and the wall. The product is light, clean and easy to handle.

Guaranteed against deterioration for 30 years, has a life expectancy of at least 50 years.

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

Features and benefits:

  • Provides a surface that is totally separated and unaffected by the dampness within the wall ensuring that the wall finish will never be affected by moisture or salts.
  • Provides a good ‘key’ for renders or plasters.
  • No need to use injected damp-proof courses which unnecessarily pump chemicals into the property.
  • Completely moisture resistant but allows vapour diffusion.
  • Quick and easy to install.
  • It can be cut with a sharp knife, scissors or shears.
  • 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.
  • The existing render can, in some cases, be left on the wall.
  • No requirement for damaging preparation to the wall surface.
  • Has a service life that can be equal to the design life of the structure.

General information


High density polypropylene (HDPP).


White / Translucent.


Meshed surface. 1.5 mm thick and has a pattern of raised studs linked by reinforcing ribs.




5.5 x 1500 x 10 000 mm


30 years

Guaranteed against deterioration

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 1931, BS EN 13501-1, EN 14030 and EN ISO 13438.

Third-party certification

BBA certificate - 00/3716.

Stud height

5.0 mm.

Sheet thickness

0.5 mm.

Weight (minimum)

19.00 kg.

Integral plaster key

The meshed surface creates a mechanical key to allow the membrane to be plastered, rendered or to receive dot and dab plasterboard.

Performance characteristics


Fire performance

To BS EN 13501-1: Euroclass E.

Product Reference

Newton 805 (M8)

1.5 x 5 m.

Newton 805 (M9)

1.5 x 10 m.


High density polypropylene (HDPP).


Newton 800 Mesh Plug.

Standard, for fixing to most surfaces.

Newton 800 Cob Plug.

For plywood or timber only.

Vicat softening temperature


Packaged weight

7.95/ 19.00 kg.

Service temperature

40 to 80°C.


0.480 W/mK.

Water vapour diffusion resistance – Sd value

200 m.

Water vapour diffusion resistance – µ value

400 000 μ.

Water vapour diffusion resistance

1000 MNs/g.

Resistance to fire

Euroclass E.

Chemical resistance – Excellent


Oxidation resistance – Excellent


Joint seal/ repairs

Newton Mesh Tape (A25).



Newton 801-M Mastic Sealant (A18).

Stops any ‘bridge’ happening between the damp or stained surface and the new surface when holes are drilled through. Use also for sealing around protrusions.

Newton 800 Profile (A19).

2 m lengths. Plaster stop.

Environmental information



Digital objects

Platform Compatible Version Certified to

Revit 2016





Download now from NBS National BIM Library


Newton 805 Newlath

Newton 805 Newlath

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