Why Fulham properties get standing water and waterlogged ground
Fulham is street after street of late-Victorian terraces, most with side-return extensions and a good number converted into flats. Loft conversions and rear extensions are widespread, and both routinely build over the original drain line.
A French drain is a stone-filled trench with a perforated pipe in it, intercepting water moving through the ground and taking it somewhere it can safely go. The principle is simple; the design is where these succeed or fail.
Because the housing stock is so uniform, so are the faults: root ingress at clay joints under front gardens, grease and fat in kitchen runs, and rainwater from newly paved areas overloading gullies at the rear.
Our approach in Fulham
The design question is always the same: where is the water coming from, and where can it legally and practically go?
- Survey the site, the levels and the subsoil to confirm where water is collecting
- Establish a viable discharge point, whether a surface water drain, a soakaway or a watercourse
- Excavate the trench to the depth and fall the design requires
- Lay geotextile membrane, perforated pipe and washed aggregate in the correct order
- Reinstate the surface and check the run under a controlled flow of water
Most properties allow access to the rear through the house or a side passage. Where an extension covers the drain, we survey first so any excavation is limited to the actual fault.
Signs it needs attention now
- Ground that stays waterlogged for days after rain
- Water pooling against an external wall or across a patio
- Damp appearing on an internal wall at low level
- A lawn that has become moss-heavy and will not dry out
- A newly paved area with no drainage provision
What we see most often in Fulham
- Clay laterals under front gardens affected by root ingress
- Original drain runs built over by side-return extensions
- Rear gullies overwhelmed where the garden has been fully paved
Fulham is overwhelmingly family houses, many recently extended, and much of our work follows building work that changed how the drainage runs. We also carry out pre-purchase surveys, which in this uniform Victorian stock tend to find the same handful of faults.
Equipment and what happens afterwards
A French drain is only as good as its components, so we use geotextile membrane, perforated pipe and washed aggregate rather than pit-run material that will clog. The membrane is what keeps fine soil out of the stone, and it is the thing most often left out of a drain that silts up within two seasons.
We test the finished run with a controlled flow of water before reinstating the surface, so you can see it discharging rather than take our word for it. We explain where the water goes and what to keep clear, and we are honest when a French drain is not the right answer and the real problem lies somewhere else.
What french drains cost in Fulham
French drain installations are quoted after a site visit, because the price depends on the run length, the depth and where the water can be taken. Evenings, weekends and bank holidays carry no call-out charge, so an urgent job in Fulham costs what we quote.
Areas we cover around Fulham
Fulham sits within our core coverage, taking in SW6 across Hammersmith and Fulham. Average response is 75 minutes, and we operate in Hammersmith, Chelsea, Putney and Battersea too, which helps when a drain run is shared between properties in different streets.