Sloping yard, pooling water, downpipes with no purpose .....

Do not let water lie around the property walls. It must be collected, transported and diverted away.

What Is Drainage ?

Do you have a sloping yard and pooling water? So what is drainage? Drainage is the natural or artificial removal of surface and sub-surface water from an area. It is important that water doesn’t lie around the base of a building walls. Surrounding paths and ground levels should be at a gentle angle to carry water away from the walls.

Make sure that downpipes do not expel stormwater onto lower walls or ground levels. Ideally this water should be carried away by a drainage pipe to a stormwater outlet. Ground levels may also need to be lowered to expose a buried damp proof course system. Sometimes this becomes a difficult task. In old city areas there has been a progressive build-up of road pavements. Some buildings in these areas are left in low-lying ground levels and are surrounded by a ‘levee bank’.

A levee bank raises the ground level due to deposits of sediment over time. This potentially changes the pathway of water flow.

Installing A Drainage System
  • soil is excavated to a safe depth exposing the lower wall level.
  • walls are cleaned from soil and debris
  • a full coat of UV stable rubberised membrane is applied with full reinforcement
  • 2 further coats of UV stable rubberised membrane are applied
  • membrane protection board is installed along wall
  • a layer of blue metal is filled in the trench. This acts as a pathway or channel, directing any water along the trench
  • an agricultural pipe fitted with a sock is installed along the trench and connected to the nearest stormwater
  • pipe is covered with another layer of blue metal
  • trench is backfilled with soil.

In cases of constant heavy water flow, a pit is installed and fitted with a water pump . The water is removed mechanically with a water pump directing the water through the pipe to the stormwater outlet.

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