Description
Radon Certified Rubber Liquid Waterproofing Membrane
Radon-certified, flexible, single-component, cold-applied and seamless rubber waterproofing membrane used primarily for the external waterproofing of earth-retaining structures such as basements and foundation walls.
HydroBond 109-LM is extremely puncture resistant with elasticity of 850% and a 95% recovery memory. The membrane becomes fully engaged into the substrate to prevent water tracking and is suitable for all below ground and earth-retained structures, ranging from domestic basements to the largest civil engineering projects.
HydroBond 109-LM is available in two variants: Medium Viscosity, for use in warmer temperatures, and Low Viscosity, for when it is cooler. HydroBond 109-LM is also a constituent product of the Newton HydroBond® System supported by BDA Agrément Certificate BAB 16-031/04/A and is accepted by the NHBC as a suitable waterproofing system for Type A Waterproofing to Grades 1a, 1b, 2 & 3 – BS 8102:2022.
Key Benefits
- Fully-bonded seamless membrane.
- Good elasticity with no shrinkage.
- Medium/Low Viscosity variants instantly raintight when sprayed with HydroBond 109-LM Catalyst.
- Primer not required for most substrates.
- Complete vapour barrier.
- Solvent free, non-toxic and odourless.
- Non-flammable – No VOCs.
- High radon gas resistance.
Typical Applications
- Waterproofing of retained structures, together with HydroBond 403 Plus.
- Standalone waterproofing membrane for basement, foundation and earth-retained walls.
- Used as a detailing membrane or where access is too tight to spray HydroBond 108-LM.
- Loading-capable, liquid DPM connecting wall waterproofing membrane to internal skin DPC.
Application Rate
APPLICATION RATE - RC WALLS
- For radon and damp proofing applications the membrane is applied in two coats at a rate of 1.6 litres/m² per coat, to a total thickness of 2.0 mm
- For HydroBond System termination and continuity details at depths ≤ 0.7 m the membrane is applied in three coats at a rate of 1.6 litres/m2 per coat, to a total thickness of 3.0 mm
- For waterproofing applications at depths ≤ 7 m the membrane is applied in four coats at a rate of 1.6 litres/m2 per coat, to a total thickness of 4.0 mm
- The membrane is applied to a total thickness of 2.0 mm, which requires an application rate of 3.2 litres/m2.
APPLICATION RATE - IN ACCORDANCE WITH BS EN 15814
- To comply with standard EN 15814, the product must be applied in multiple layers:
- When subject to moisture in the ground, but not to water pressure or increasing pressure:
- Apply the membrane in three layers, with a total application rate of 4.8 litres/m2
- Cured membrane thickness 3 mm
Note: When subject to external water pressure, either from below or horizontally:
- Apply the membrane in two layers, with a total application rate of 6.4 litres/m2
- Cured membrane thickness 4 mm
Downloads
Technical Data
| Cured Performance | Result |
| Colour | Black |
| Membrane thickness – RC walls | 1.0mm |
| Membrane thickness – RC joints | 2.0mm |
| Membrane thickness – Block and ICF walls | 2.0mm |
| Membrane thickness – Radon barrier & horizontal elements | 2.0mm |
| Density / Specific gravity (no reinforcement) | 1.1 |
| Softening temperature | > 130ºC |
| Adhesion to concrete | 0.62N/mm² |
| Tensile strength & elongation at break (reinforced) | 0.68N/mm² |
| Tensile strength & elongation at break (reinforced) (aged) | 0.58N/mm² |
| Loading capability (no reinforcement) – Class 1 | 0.06MN/mm2 |
| Resistance to static indentation (reinforced) | 250N |
| Crack bridging ability (no reinforcement) – Class CB2 | ≥2mm |
| Resistance to fatigue movement – 1000 actions @ -10ºC | Pass |
| Dimensional stability at high temperature – no dripping | ≥70ºC |
| Low temperature flexibility @ -10ºC | Pass |
| Flexibility at low temperature @ 0ºC | Pass |
| Water vapour diffusion resistance – Sd value | 72.4m |
| Water tightness | 7 bar |
| Water resistance – 21 days at 21ºC | Watertight |
| Impact resistance after UV-ageing – 1000h – 10 mm | Pass |
| Radon gas diffusion resistance (1 mm membrane) | 2.1 x 10-11m²/s |
| Reaction to fire classification | Euroclass B2 |
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