For projects requiring a completely dry internal environment, London Basements & Waterproofing specifies and installs the Newton CDM System. As the most reliable and maintainable form of Type C waterproofing, this system is the ideal choice for creating habitable basements, plant rooms, and commercial spaces below ground.
Type C Waterproofing: The Newton CDM System
What is Type C Waterproofing?
Defined by British Standard 8102:2022, Type C waterproofing is “drained protection.” Rather than fighting hydrostatic pressure, this system acknowledges that water may enter the structure.
The Newton CDM System is installed internally, creating a void between the structure and the interior finish. Water is intercepted by BBA-approved cavity drain membranes, depressurised, and safely channelled into a drainage system, where it is then gravity-fed or pumped away from the property.
The Newton CDM Ecosystem
The reliability of the Newton CDM System lies in its comprehensive, integrated approach. We provide end-to-end installation of all system components:
Cavity Drain Membranes
We select the precise membrane to suit your space constraints and structural needs, all BBA certified:
- For Space-Critical Projects: Newton 503 (3mm stud) or 503 Mesh (for direct plaster/render application).
- The Industry Standard: Newton 508 (8mm stud) for versatile wall and floor protection.
- Eco-Friendly Options: Newton 508 eco Floor and 520 eco Floor—high-performance, 100% recycled membranes with diamond stud patterns for superior compressive resistance.
- Gas & Chemical Protection: Newton 508R provides a robust barrier against hydrocarbons, radon, methane, and CO2, while maintaining standard drainage capabilities.
Drainage & Management
To ensure the system remains free-flowing and fully maintainable, we install:
- BaseDrain & FloorDrain: Our precision drainage conduits that capture water at the critical wall/floor junction and construction joints.
- CDM BaseBoard: A unique, above-slab channel exclusive to Newton, used where traditional drainage is impractical.
- Titan-Pro Pump Systems: The heart of the system. We configure bespoke sump and pump setups with backup power, telemetry, and smart control systems to ensure your space remains dry even during power outages or heavy storms.
Specialist Finishing & Protection
- Lime Inhibition: Newton 906 treatment prevents the leaching of free lime from new concrete, ensuring the drainage channels remain clear of mineral blockages.
- Thermal Comfort: CDM Fibran XPS-500C provides high-performance thermal insulation that acts as a spacer, improving the energy efficiency of your basement.
- Inspection & Access: We install CDM Access Panels and Inspection Ports, ensuring that your waterproofing system is fully inspectable and maintainable for the life of the building.
Design for Combined Protection
At London Basements & Waterproofing, we prioritize risk mitigation. In accordance with BS 8102:2022, we frequently design Combined Protection systems.
By integrating the Newton CDM System (Type C) with our expertise in barrier protection (Type A – HydroBond/HydroCoat) or integral structural waterproofing (Type B – HydroTank), we can achieve enhanced environmental grades for the most demanding commercial and residential projects. Our technical team works directly with architects and structural engineers to ensure the solution is robust, compliant, and tailored to the site’s specific water table and soil conditions.
Why Choose London Basements & Waterproofing?
- BBA Certified Systems: We exclusively install BBA-certified Newton products, ensuring long-term performance and insurance-backed reliability.
- Maintainable Design: We don’t just “install a membrane”; we design a system that includes inspection ports and accessible drainage, allowing for future maintenance.
- Expert Integration: From concrete preparation and lime inhibition to complex pump configurations and telemetry, our team handles every aspect of the build.
Ready to secure your basement?
Don’t leave your underground space to chance. Let our technical team design a robust, maintainable, and fully compliant Type C waterproofing system for your project.
Call our Technical Team today on or contact us via the form below.
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Location:
Solar House,
915 High Road,
Finchley,
London,
N12 8QJ