img(height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=2939831959404383&ev=PageView&noscript=1")

Newton cavity drain membrane system installed in London vaults

Newton specialist contractor Stonehouse was brought in to waterproof an historic Grade II listed network of underground structures north of the River Thames

In association with
The listed vault waterproofing involved protecting four vaults beneath the A40 motorway.
The listed vault waterproofing involved protecting four vaults beneath the A40 motorway.

Stonehouse Property Care has waterproofed four impressive underground vaults for service provider KPMG for use as commercial spaces.

The Grade II listed structures lie beneath the streets of central London, a short walk from Smithfield Market and St Paul’s Cathedral. They form part of an impressive below-ground infrastructure network and are each over four metres in height. 

The Newton Cavity Drain Membrane (CDM) system offers the ideal waterproofing solution for historic, listed buildings. Maintainable and robust, the system requires minimal fixings to walls and so avoids damaging the structure. It is a reversible system, which is important for listed buildings that may need to be returned to their original condition in the future.

  • Careful detailing was required in the tricky space.
    Careful detailing was required in the tricky space.
  • The network of vaults extends a long way beneath the streets of London.
    The network of vaults extends a long way beneath the streets of London.
  • Stonehouse utilised Newton’s Recycling Service for waste membrane.
    Stonehouse utilised Newton’s Recycling Service for waste membrane.
  • The finished cavity drain installation was exceptionally neat.
    The finished cavity drain installation was exceptionally neat.
1234

Stonehouse's installation of a full Newton CDM system to the vaults, included:

  • Fitting a 508 mesh membrane to the walls, for a finest plaster finish.
  • Fitting a 508 membrane and Fibran XPS 500-C insulation boards to the floor.
  • Basedraining channels to direct any captured water towards two Titan-Pro sump chambers, each containing two NP400 pumps.
  • Using a Victron Inverter and a NorthStar battery for reliable back-up power.

Stonehouse completed the complex and detailed cavity drain installation with precision, resulting in an exceptionally neat waterproofing system, and proved the benefits of using a specialist waterproofing contractor.

For more information and technical support, visit: newtonwaterproofing.co.uk


 
Contact:

01732 360095

tech@newtonwaterproofing.co.uk


 

Latest

9 July 2025 from 9am to 11.15am

RIBAJ Spec: Offices and Workspace Design webinar

24 June 2025

Designing for Neurodiversity webinar

Despite the spending review's boost for social homes, the government's headline housing pledge looks a long a shot as ever – but its changing perspective on supply and demand could have implications for the architectural community

The government's changing perspective on housing supply and demand could have implications for the architectural community

Clerkenwell Design Week offers a chance for the London district’s ancient buildings to host fresh design innovations – and for architects and manufacturers to meet. For 2025's event, Kunle Barker took attendees on a special walking tour

The London district’s ancient buildings host design innovations – and architects and manufacturers collaborate

Student and Practitioner entrants to our annual drawing competition have showcased some exceptional skills, as engagement with artificial intelligence grows

Entrants to our annual drawing competition have showcased some exceptional skills