A perfectly damp proofed basement, having undergone basement tanking treatment, with fresh plaster on the walls

Location: Banbury, North Oxfordshire

Type of property: Period property with basement

Services used:

  • Flood alleviation
  • Installation of waterproof membrane
  • Installation of Delta drainage channelling
  • Installation of cavity floor membrane
  • Stud wall erection
  • New concrete floor
  • Waterproof plastering

Materials Used: 

  • Delta MS500 8mm membrane
  • Delta Drainage Channels
  • Delta V3 dual pumping station, with high level alarm and control pane
  • Delta V6 pumping station, with high level alarm and control panel
  • 110mm sub-floor drainage pipe
  • Polysil TG500 anti-lime solution
  • Delta MS20 floor membrane
  • Softwood treated battens
  • Replastering materials

Problem:

From the photographs you can clearly see the main problem in this converted basement is flooding. The reasons for the water ingress into this space are two-fold:

  1. A natural spring well situated beneath the property that repeatedly flooded
  2. A canal situated just 10 metres away from the property.

Property Conservation Services were called in to conduct a survey of the problems, and present the solutions.

The client intended to use the basement for storage, but had been unable to due to the history of flooding.

Works completed: 

Once the standing water was pumped out and under control, we began by stripping out any affected materials, cleaning down the floors and walls to prepare the room for basement tanking.

Tanking treatment began by re-directing the water that could potentially re-enter the basement using Delta Membrane Drainage Channels set into the floor as new concrete was laid. The receiving pumps were located into a new slab that direct any water into existing drains.

8mm basement tanking membrane was affixed to the walls, creating a dry barrier, and durable cavity floor membrane was laid across the new floor and tied into the wall membrane to create a fully sealed basement.

Working together with first-fix electricians, we erected new stud walling to the perimeter of the internal space, adding a damp-alarm system with back-up battery to alert the homeowners of any future breaches, and wiring for new lighting.

This perfect example of a basement tanking project was completed with a coating of waterproof plaster, and left clean for the homeowners to commence decoration.

Before Basement Tanking

During Basement Tanking

After Basement Tanking

Property Conservation Services Treatments