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Hammerson House will be a world class, 116-bed residential centre for the elderly Jewish Community in Hampstead. Newton Specialist Contractor Cast Contracting Ltd (CCL) were approached during the planning stages to develop a comprehensive waterproofing solution for the extensive basement.

The Project

The multi-million pound Hammerson House development offers holistic, compassionate, respite and end of life care in a safe, stimulating environment, designed around the principle of ‘households’ – clusters of bedrooms with supporting facilities on a domestic scale.

NSBC Cast Contracting Ltd (CCL) were approached by main contractors Bowmer and Kirkland, and P+HS Architects during the planning stages, to develop a comprehensive waterproofing solution for the extensive basement.

The Solution

CCL recommended the installation of a Newton CDM water management system to comprehensively waterproof the extensive basement. First, they employed the 8mm Newton 508 membrane to the concrete retaining walls of the basement. The 50mm thick Fibran XPS 500-C insulation was then installed beneath more 508 membrane across the entire concrete slab. Additionally, Basedrain drainage channel was installed around perimeter, including inspection ports to provide a fully maintainable system.

This entire system is served by a series of complete sump and pump systems, each consisting of primary and backup NP400 pumps, high water level alarms, and battery backup systems. These are all controlled by Newton’s advanced Control Panel-Pro to ensure a failsafe system, even during a power outage.

Finally, Newton’s 107F cementitious waterproof membrane was spray applied to the concrete upstands of the lightwells and lift pits in order to complete the continuous watertight solution.

The Result

By combining multiple types of specialist product from Newton, CCL were able to deliver a comprehensive waterproofing solution to the client, compliant with British Standards, and fully supported by an installation guarantee.

quotation marks

“The team at CCL worked closely with the Bowmer & Kirkland site team to install a comprehensive waterproofing solution to the large basement floor, including lift pits and plant areas. The time critical waterproofing works were carried out to a professional standard and ready for handover to the floor screeders in line with our programme.” Simon Green - Senior Site Manager, Bowmer & Kirkland

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