Challenge

A listed commercial basement in Temple Fortune required converting into a new community centre, a project run by HSP Architects and Price & Myers. They looked to Newton Specialist Contractor Arti Construction as the structure required waterproofing.

The basement is part of a four-storey listed building that was built into the hillside, meaning three of the walls were either fully or partially below-ground and suffering from water penetration.

Arti Construction worked with the design team at an early stage to design a waterproofing solution.

Solution

With existing listed basements such as this one, Arti Construction was quick to recommend a Type C cavity drain waterproofing solution in the form of the Newton CDM System. Type C waterproofing is the safest and most reliable form of waterproofing that will deliver a completely dry internal space, whilst also causing the minimum amount of disruption to the listed structure. 

Before the Newton CDM System could be installed, Arti had to re-level the existing concrete slab in order to provide a flat and stable floor. 

Once the structure wass prepared, Arti then installed a full cavity drain waterproofing system that consists of Newton 508 membrane fixed with minimal MultiPlugs to capture the ingressing water. The water is then directed via Newton Basedrain channels to a Titan-Pro sump chamber, for removal by dual NP400 clean water pumps. 

Outcome

The basement space was complex, with existing columns, windows and an internal staircase that had to be factored into the waterproofing design. 

Despite these challenges, Arti Construction completed the 280m2 installation in one week and within budget, delivering a reliable Type C structural waterproofing system that is also compliant with British Standard 8102:2009.