Radon Certified Rubber Liquid Waterproofing Membrane – HydroBond 109-LM
HydroBond 109-LM is a radon-certified, single-component, flexible liquid rubber waterproofing membrane designed for external waterproofing of earth-retaining structures, including basements and foundation walls. This cold-applied, seamless membrane provides high elasticity (850%) and exceptional puncture resistance, ensuring full engagement with the substrate to prevent water tracking.
Available in Medium Viscosity (for warm temperatures) and Low Viscosity (for cooler temperatures), HydroBond 109-LM is a key component of the Newton HydroBond® System, holding BDA Agrément Certificate BAB 16-031/04/A and NHBC approval for Type A Waterproofing to Grades 1a, 1b, 2 & 3 – BS 8102:2022.
Key Benefits:
✅ Fully bonded seamless membrane – Prevents water tracking
✅ Extreme elasticity (850%) & recovery memory (95%) – Highly flexible and durable
✅ Radon gas resistant – Certified for radon barrier applications
✅ No primer required for most substrates – Reduces installation time and cost
✅ Solvent-free, non-toxic & odourless – Safe for use in all environments
✅ Non-flammable – No VOCs – Environmentally friendly
✅ Instantly rain-tight when sprayed with HydroBond 109-LM Catalyst
Typical Applications:
✔ Waterproofing of earth-retained structures (used alongside HydroBond 403 Plus)
✔ Standalone waterproofing for basements, foundations & retaining walls
✔ Detailing membrane for complex or confined spaces where spray application isn’t feasible
✔ Liquid DPM for connecting wall waterproofing membranes to internal DPC
Application Rates & Thickness:
RC Walls (Radon & Damp Proofing Applications)
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Two coats applied at 1.6 litres/m² per coat
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Total thickness: 2.0mm
HydroBond System Termination (≤ 0.7m Depth)
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Three coats at 1.6 litres/m² per coat
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Total thickness: 3.0mm
Waterproofing Applications (≤ 7m Depth)
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Four coats at 1.6 litres/m² per coat
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Total thickness: 4.0mm
Radon Barrier Applications
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Total thickness: 2.0mm
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Application rate: 3.2 litres/m²
BS EN 15814 Compliance (Moisture Exposure – No Water Pressure)
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Three layers at 4.8 litres/m² total
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Total thickness: 3.0mm
BS EN 15814 Compliance (Water Pressure Exposure)
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Two layers at 6.4 litres/m² total
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Total thickness: 4.0mm
Product Specifications:
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Code: HydroBond 109-LM
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Packaging: Available in Medium & Low Viscosity variants
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Colour: Black
Technical Performance:
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Membrane Thickness – RC Walls: 1.0mm
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Membrane Thickness – RC Joints: 2.0mm
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Membrane Thickness – Block & ICF Walls: 2.0mm
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Membrane Thickness – Radon Barrier & Horizontal Elements: 2.0mm
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Water Tightness: 7 bar
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Radon Gas Diffusion Resistance (1mm Membrane): 2.1 x 10⁻¹¹m²/s
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Adhesion to Concrete: 0.62 N/mm²
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Tensile Strength (Reinforced): 0.68 N/mm²
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Tensile Strength (Reinforced & Aged): 0.58 N/mm²
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Crack Bridging Ability (Class CB2): ≥2mm
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Low Temperature Flexibility (-10ºC): Pass
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Softening Temperature: >130ºC
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Fire Classification: Euroclass B2
💪 Achieve advanced waterproofing and radon protection with HydroBond 109-LM – Order today!
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