Delta Membranes Systems recently supplied a comprehensive, long-term solution for a private property in Banbury, prone to water ingress during heavy rainfall.
Rose Hall Cottage, located in Middleton Cheney, is prone to water ingress in the kitchen, along the base of the external wall during heavy rainfall.
This is due to water bearing against the base of the external stone wall as the road levels adjacent to the kitchen are around 300mm higher than the kitchen floor slab. Flooding is typically due to heavy rain and perches for generally a short duration against the kitchen wall with water ingress into the kitchen emanating from the wall and floor joint spreading out from there.
Delta was able to offer a complete service from CSSW qualified specialists for design advice, a full range of high structural waterproofing quality products, and a network of Delta Registered Installers to install them correctly.
Given the high external ground levels, soakaway drainage would likely leave the subsoil saturated at times of flood, and the likely ineffectiveness of an external barrier solution meant that the best solution was to tackle the problem from the inside.
Therefore, A Type C Drained Protection Solution was chosen. The main components of the system are the cavity drainage membranes. These are sheets manufactured from virgin HDPE which are extruded into studs, available in various depths – an 8mm membrane was used in this project.
With the floor finishes and kitchen units removed a min. 50mm deep 100mm wide channel chase was cut at the wall & floor joint draining to a Delta Single V3 sump and pump unit. The chase was Bunded and the inner face of the existing wall was then lined using Delta MS500 cavity drainage membrane, and fixed using sealed Delta Plugs.
The whole of the existing kitchen slab was then lined over using 3mm profile Delta FM membrane (which is designed as an underlay for protecting oak floors) the two membranes joined by use of a wide profile DPC.
Finally, Delta Koster Façade cream was applied externally, along the base of the wall to increase the water repellent properties of the wall.
The project at Rose hall Cottage has produced an effective and continuous solution which can be used by the homeowner to reclaim the true market value of her property, in the sense that a comprehensive and long term solution has been introduced to solve this intermittent yet long term flooding problem.
Delta Membrane Systems,
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