Newton HydroBond 402-CCSM – Advanced External Waterproofing & Radon Barrier
Newton HydroBond 402-CCSM is a high-performance composite membrane designed for the external waterproofing of below-ground foundation structures, basements, water-holding tanks, culverts, and tunnels. Its flexibility, durability, and superior adhesion eliminate the need for additional protection boards or a smooth blinding layer when used as a ground-level radon damp-proof membrane (DPM).
This LDPE membrane with a non-woven geotextile fleece features excellent crack-bridging properties, ensuring continuous protection even when structural movement occurs. When pre-applied, the wet concrete absorbs into the fleece, creating an integral mechanical bond that prevents water migration between the membrane and the structure.
HydroBond 402-CCSM can also be post-applied and used alongside other Newton waterproofing products, providing a comprehensive, integrated system for protecting structures from water ingress at construction joints, service entries, and movement joints.
Key Benefits
✔ Mechanical Bond to Concrete – Prevents lateral water migration.
✔ High Flexibility – Adapts to substrate movement and fissures.
✔ Chemical Fusion Bond Adhesive Laps – Ensures secure overlaps for enhanced protection.
✔ Watertight Performance – Certified under high-pressure conditions.
✔ Radon & Gas Barrier – Effective protection against harmful gases.
✔ No Need for Protection Boards – Saves time and material costs.
Typical Applications
🏗 Waterproofing & Radon Protection for:
- Below-ground structures
- Basements & foundations
- Tunnels & culverts
- Water tanks & reservoirs
- Diaphragm, secant, and contiguous pile walls
- Metal sheet piles
Suitable Substrates
✔ Rafts & Slabs – Concrete blinding, compacted Type 1 hardcore, sand, insulation.
✔ Wall Formwork – Secant or contiguous piles, metal sheet piles, diaphragm walls, temporary timber shuttering.
Technical Data
| Performance |
Result |
| Service Temperature |
-40ºC to +100ºC |
| Adhesion to Concrete (Pre/Post) |
0.55 N/mm² |
| Lateral Watertightness (Pre/Post) |
500 kPa / 120 kPa |
| Elongation at Break |
29.3% (Machine) / 53.3% (Traverse) |
| Tensile Strength |
684 N/50 mm (Machine) / 477 N/50 mm (Traverse) |
| Watertightness |
Passed at 400 kPa (72h) |
| Resistance to Static Loading |
Watertight at 20 kg load |
| Water Vapour Diffusion (Sd Value) |
365 m |
| Radon Gas Diffusion Coefficient |
0.39 x 10⁻¹² m²/s-¹ |
| Resistance to Fire |
Euroclass E |
Product Data
📦 Code: 402-CSS-M
📏 Size: Roll 20m x 1m (402-20) / Roll 20m x 2m (402-40)
🎨 Colour: White & Blue
📐 Coverage: 20m² / 40m²
🔗 For bulk pricing and technical support, call us at 01268 472358.
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