Surface water and soak away drainage
The picture above is an example of a soak away drain in Harrogate that has become defective. The black fall pipe is from a flat roof above and the excavation in front confirms that the soak away is not piped to mains surface water drainage.
How soak away drains work
Soak away drains are most common on domestic properties and are usually a gully drain on a corner taking water via a fall pipe from the roof. They are piped into a layer of stones/gravel underground to allow the water disperse naturally.
Problems can occur when the stones/gravel rather than acting like a filter become clogged with debris and soil causing the drain to back up.
How to rectify defective soak away drainage
- High pressure water jetting of the drain to wash the stones/gravel to allow the water to flow away naturally again although this may not always cure the problem it should be the cheapest and first port of call
- Re pipe the drain to a mains surface water line.
- Excavate and replace the stone/gravel layer to return it to “like new” condition.
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