New Build Waterproofing of Party Wall

In a beautiful countryside setting near Harrogate, North Yorkshire, our client is constructing several new houses on a sloping site. The houses are built following the levels of the ground. This means that there is a differential in levels between properties. This places the lower house at risk from dampness and groundwater ingress through the party wall.

The solution is provided in 2 stages. Stage 1 is to the ‘positive side’ of the structure – this is at sub-floor level of the higher level house. Stage 2 is to the ‘negative side’ of the structure – this is the party wall in the lower level house.

Here we are applying stage 1 – A ‘Type A’ tanking system comprising of:-

  • Koster Polysil TG500 anti-lime and surface preparation coat
  • Koster Deuxan 2C polymer-modified bitumen coating with glass fibre reinforcement
  • Delta Deo-Drain Quattro drainage membrane with integrated silt filter and protection layer

Land drainage was then laid, linked to a reliable and maintainable drain and the trench backfilled prior to a new floor slab being installed.

Here we are applying stage 2 – A ‘Type C’ cavity drainage system comprising of:-

  • Koster Polysil TG500 anti-lime and surface preparation coat
  • Delta MS500 cavity drainage membrane with taped joints, retained with sealed plugs
  • Delta drainage channel with maintenance ports, linked to a reliable and maintainable drain

The floor has then been insulated and screeded, and walls have then been lined to provide an insulated, plastered finish.

Waterproofing a leaking balcony

Our customer in Sunderland had a balcony on a new build property which was leaking. Our contractor removed the old waterproofing and applied a new waterproof system using NB1 Tanking slurry, Koster Deuxan 2c, and Delta Terraxx to provide the waterproof solution our clients required.

Ground Gas Membrane Installation

This commercial unit being built on a brownfield site had a requirement for ground gas measures to Characteristic Situation rating 2 (as per BS8485:2015+A1 :2019). Our member assisted the main contractor with the design and installed Juta GP1 ground gas membrane with their NVQ2 qualified technicians. On completion the membrane was independently verified by a verification company (in accordance with Ciria C735) and a report submitted to the local authority which enabled the planning condition to be discharged.

These measures will protect the occupants of this building (when it’s completed) for decades to come.

Transformation of a cellar into a warm and cosy living space

One of our teams transforming a cold damp cellar into a warm and cosy home cinema.

Protected from dampness and ground water flooding by a Delta cavity drainage system comprising of:-

Delta MS500
Delta MS20
Delta Drain Channel
Delta Qwik-Seal Plug
Delta Tape
Delta Dual V3 Pump Station
Delta Alertmaxx 2
Delta Powermaxx

As always the photographs speak volumes and really highlight this amazing transformation.