Why Ealing Drains Block the Way They Do

Ealing is one of the leafiest boroughs in London and that is not just a nice thing to say in an estate agent listing — it is the single biggest reason its drains fail. Mature planes, limes and horse chestnuts on the verges around Ealing Common, Walpole Park and the streets behind the Broadway send out roots looking for moisture, and a hairline crack in an old pipe is a beacon to them. Once inside, roots fan out across the bore and catch everything else travelling past, so you end up with a root mat and a fat plug working together.

The pipework itself makes it worse. Most of the housing around Ealing Broadway, West Ealing, Hanwell and South Ealing was built between 1880 and 1910, with short runs of 100mm salt-glazed clay joined at socket-and-spigot joints. Those joints flex over time, and the London clay under much of the borough shrinks in a dry summer and swells in a wet winter, which moves them again every year. By now those pipes have had well over a century of that. In Acton and South Ealing the strain is different: houses that were built for one family are now three or four flats drawing on one original 4-inch drain, with three kitchens upstairs sending fat and food waste down a line designed for one.

Hard Water, Scale and the Fat That Sets Like Cement

West London water is hard — among the hardest in the country — and that changes what a blockage is made of. Calcium in the water lays down scale on the inside of the pipe wall, and soap and detergent stick to that roughness far more readily than they would to clean plastic. In a kitchen waste line, hot fat runs down, cools against the scaled wall and sets into something closer to candle wax than cooking oil. Layer that over a couple of years and the inside of the pipe looks like limescale in a kettle, only greasy.

This is the type of blockage a plunger cannot touch and a rod only punches a channel through. A pressure jet with a rear-facing nozzle and a spinning head hits the entire circumference of the pipe at once, shearing the fat off the wall and pushing it out of the run rather than compacting it further down. It is also the only way to get a pipe clean enough to be worth putting a camera down afterwards.

Sometimes the Honest Answer Is Not Jetting

If a pipe has collapsed, or roots have opened a joint wide enough that the pipe is out of shape, jetting clears it and it blocks again in a few months. We would rather tell you that on the day than take your money twice a year. That is why, on a drain that has blocked more than twice in a year, we will jet it, run a CCTV drain survey down it and show you the footage. You either get a clean bill of health for the price of a clearance, or you get the evidence you need to justify a patch repair or a liner instead of another callout.

There is also a boundary worth knowing about, because it is the reason some Ealing homeowners are paying for work they do not need to. Since the 2011 transfer of private sewers, shared drains and the lateral drain that runs from your boundary out under the pavement are generally Thames Water’s responsibility. Their teams clear those for free. Where a blockage is inside your own private drain — in the run within your property line — it is yours, and that is the work we do. If we arrive and it is clearly on their side, we will say so.

How We Jet a Drain in Ealing

Most jobs need no digging. We lift the nearest inspection chamber — usually the one at the back of the house, or the roadside gully — lay protection over paths and driveways, and feed the hose in from there. The nozzle’s rear jets pull the hose along while the front jets cut and the flow carries debris out of the run. We work in passes rather than one hard blast, watching and feeling how the line is responding, because a single full-pressure hit on a 130-year-old clay pipe with a hairline crack in it is how small problems become excavations.

Access shapes the day in Ealing more than most places. Victorian side returns in Hanwell and West Ealing are narrow, so we carry the smaller reel and hose those runs by hand. Basement and lower-ground flats around the Broadway and Acton often have their gullies below pavement level, which means we check the non-return and the outside gully as well as the main run — a flooded basement is usually a blocked gully or a failed flap, not the main drain. On the commercial side, the kitchens along the Uxbridge Road, in West Ealing’s food spots and across the industrial estate at Park Royal are on high-fat lines that need a proper scour, not a bottle of caustic.

Keeping an Ealing Drain Flowing

For a normal household drain in Ealing, a jet every 12 to 24 months is enough. If you have a mature tree within a few metres of your drain run — very common in Northfields, Pitshanger and around Ealing Common — make it annual, and book it in late September so the pipe is clean before the autumn leaf fall and the winter water table rise. For restaurants, takeaways and HMO landlords, twice-yearly beats the emergency every time: a scheduled drain jetting costs a fraction of a callout plus the damage from a flooded kitchen floor.

Posted by HydraFlow — drainage and plumbing specialists covering London. We provide blocked drain clearance, high-pressure drain jetting, CCTV drain surveys, and emergency drainage services across Ealing, Acton, Ealing Broadway, West Ealing, Hanwell, South Ealing, Northfields, Pitshanger, Perivale, Greenford, Northolt, Southall, Park Royal, and West London.