NBS Source
Newton 109-LM


Suitable for the external waterproofing of earth retaining structures such as basements and foundation walls.


A radon-certified, flexible, single-component, cold-applied, seamless rubber waterproofing membrane. It is also adept as a detailing membrane for the termination and jointing of other Newton waterproofing products, and with its very high adhesive properties is the perfect primer for adhesion of butyl products to concrete and mortar.

Puncture resistant with elasticity of 850% and a 95% recovery memory, the membrane becomes fully engaged into the substrate to prevent water tracking.

The membrane is available in two variants: Medium viscosity (hand-applied) for use in warmer temperatures and low viscosity (spray-applied) for cooler temperatures (supported by BDA Certificate BAB 13-026/01/A). Newton 109-LM is also a constituent product of the Newton HydroBond® System supported by BDA Agrément Certificate BAB 16-031/03/A.

The product can be used in isolation or in conjunction with other Newton waterproofing and damp proofing products to provide a coordinated and combined approach to the waterproofing of the whole structure that includes protection against water ingress to the deck, through construction joints, through and around service entries and to movement joints.

Surface preparation is required, as is protection after application - consult manufacturer for details.

Features and benefits:

  • Accepted by the NHBC as a suitable waterproofing system for Type A Waterproofing to Grades 1, 2 and 3 - BS 8102: 2009.
  • Single component.
  • Fully-bonded seamless membrane.
  • Very flexible (850% elasticity with 95% recovery memory) easily dealing with movement and settlement. No shrinkage.
  • Instantly rain-tight when sprayed with Newton 109-LM Catalyst - consult manufacturer for details.
  • Primer not required for most substrates.
  • Provides a complete vapour barrier.
  • Can be used as an adhesive for insulation to decks.
  • Solvent free, non-toxic and odourless.
  • Non-flammable and no volatile organic compounds (VOCs).
  • Multi-use product: waterproofing, detailing, priming and repair.
  • Excellent adhesion to all clean and prepared substrate.
  • Compressive load capabilities to allow seamless termination from below ground to damp-proof course (DPC).
  • Suitable substrates for waterproofing include concrete of at least 20 kN, concrete block walls with flush pointing and insulated formwork walls (ICF). For damp proofing and detailing the suitable substrates include concrete, mortar and screeds.
  • CE marked and manufactured in accordance with EN 1504-2: 2004+A2: 2014.
  • Where the membrane is exposed to UV and weathering, the life expectancy is ten years.
  • Can be applied by brush, roller or airless spray machine, and can be applied in cool and damp conditions, without a primer.


  • Ready for next coat: At 5°C: After 24 hours; at 10°C: After 12 hours; at 15°C: After 2 hours; at 20°C: After 24 minutes; at 25°C: After 12 minutes.
  • To be kept rain-free: At 5°C: For 24 hours; at 10°C: For 12 hours; at 15°C: For 1 hour; at 20°C: For 30 minutes; at 25°C: For 30 minutes.
  • Ready for temporary foot traffic/ protection boards: At 5°C: After 24 hours; at 10°C: After 12 hours; at 15°C: After 2 hours; at 20°C: After 1 hour; at 25°C: After 1 hour.
  • Ready for flood/ hosepipe test: At 5°C: After 48 hours; at 10°C: After 24 hours; at 15°C: After 4 hours; at 20°C: After 3 hours; at 25°C: After 2 hours.
  • Fully cured: At 5°C: After 48 hours; at 10°C: After 24 hours; at 15°C: After 8 hours; at 20°C: After 5 hours; at 25°C: After 3 hours.

General information



Rubber waterproofing membrane.


Smooth matte black finish.


Brown at application, cures black


Liquid form.


20 Litres.

Uniclass 2015

Pr_25_57_51_66 Polymeric membranesPrimary


J30/130 Cold applied damp proofing . . . . . .

J30/10 Cold applied damp proofing

Product range

Liquid Waterproofing Membranes

Specification data - Polymeric membranes Enhanced data



Third-party certification

BDA Agrement BAB-18-067-P-A-UK.

Width (minimum)

1 mm.


Brown/ Black.

Product Reference

Newton 109-LM Low Viscosity


Newton 109-LM Medium Viscosity




Rubber waterproofing membrane.

Density / Specific gravity


Shelf life

12 months.

Application rate in 1 to 2 coats - RC walls

1.6 L/m².

Application rate in 2 coats - Joints in concrete walls - band of 250 mm

3.2 L/m².

Application rate in 2 to 4 coats - Block and ICF walls

3.2 L/m².

Application rate in 2 to coats - Radon barrier and horizontal elements

3.2 L/m².

Application method

Brush, roller and airless spray.

Application temperature

+5 to +40 °C.

Service temperature

-15 to +40 °C.

Odour Slight

Resinous odour.


Does not contain solvents.


Low or medium.



Membrane thickness - RC walls

1.0 mm.

Membrane thickness - RC joints

2.0 mm.

Membrane thickness - Block and ICF walls

2.0 mm.

Membrane thickness - Radon barrier and horizontal elements

2.0 mm.

Density/Specific Gravity (no reinforcement)


Softening temperature > 130°C

> 130°C.

Adhesion to concrete 0.62 N/mm²

0.62 N/mm².

Tensile strength and elongation at break (reinforced)

0.68 N/mm².

Tensile strength and elongation at break (reinforced)(aged)

0.58 N/mm².

Loading capability (no reinforcement) - Class

1 0.06 MN/mm².

Resistance to static indentation (reinforced)

250 N.

Crack bridging ability (no reinforcement) - Class CB2

≥2 mm.

Resistance to fatigue movement - 1000 actions at -10°C


Dimensional stability at high temperature - no dripping

≥70 °C.

Low temperature flexibility at -10°C


Flexibility at low temperature at 0°C


Water vapour diffusion resistance – Sd value

72.4 m.

Water vapour diffusion resistance - µ value

36 200 µ.

Water vapour diffusion resistance

362 MNs/g.


7 bar.

Water resistance - 21 days at 21°C


Impact resistance after UV-ageing - 1000h - 10 mm


Radon gas diffusion resistance (1 mm membrane)

2.1 x 10-11 m²/s.

Reaction to fire classification

Euroclass B2.

Digital objects

Platform Compatible Version Certified to




Revit 2016


Download now from NBS National BIM Library


Newton 109-LM BDA Certificate

Newton 109-LM BDA Certificate

Third party certifications

  • BDA Agrément®: Certificate: BAB 17-031/04/A

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