Waterproofing a Crest Nicholson Development

Summary

• 

  Newton 403 HydroBond is a very high performance composite sheet membrane that features a locking fleece to one side and a polymer hydrophilic coating to the other side. It is suitable for application under reinforced concrete rafts and pre-application to reinforced concrete retaining walls.

• 

  Reinforcement steel can be placed on top of the HydroBond ready for the concrete to be placed

• 

  When placed below a new raft, the poured concrete engages into the locking fleece.

Waterproofing the Park Avenue, Sunbury-on-Thames development of 193 apartments and houses with Newton 403 HydroBond. HydroBond is a fully applied external membrane that provides a Type A (barrier) waterproofing solution.

The Project

Crest Nicholson were responsible for the development of Park Avenue in Sunbury-on-Thames, a combination of 193 apartments and spacious executive homes. The site was the old training grounds for London Irish Rugby club.

The Solution

They applied Newton 403 HydroBond to the development to create a complete waterproof envelope. This provides a Type A (barrier) waterproofing solution suitable for Grades 1, 2 and 3 under BS8102:2009. Additionally, HydroBond is a very high-performance composite sheet membrane that features a locking fleece to one side and a polymer hydrophilic coating to the other.

The Result

Evidently, HydroBond is suitable for use around below-ground reinforced concrete structures. The self-healing and fully bonded membrane protects the slab from water ingress via shrinkage cracks.

You can place heavy objects on top of HydroBond.If the membrane suffers damage or punctures of 10 mm or more, you can repair it by applying a patch and securing it with HydroBond tape.
Lastly, once installers lay HydroBond onto the oversite substrate, they can place reinforcement steel on top, ready for concrete.