A blocked drain rarely picks a convenient moment, and in Windsor it tends to pick the worst one: a gully backing up across a shared path behind a Clewer terrace, or a kitchen stack overflowing mid-service in a town-centre restaurant. TrueFlow clears blocked drains, sinks, toilets and gullies across Windsor 24 hours a day, every day of the year.
We are a drainage firm based in nearby Bracknell, which makes Windsor one of the closest towns we cover. For emergencies we aim to have an engineer with you within 60 minutes. We are fully insured, and every drain unblocking visit ends with the pipe tested and flowing before we leave, backed by our 6-month guarantee.
Why drains block in Windsor
Much of Windsor’s terraced housing went up fast after the Great Western Railway arrived in 1849, when builders filled almost every plot west and south of Peascod Street and pushed on through Clewer along Oxford Road. Those Victorian terraces still rely largely on their original narrow-bore clay drains, often shared between several houses, so one household’s wipes or fat can back up a neighbour’s gully three doors down.
The ground underneath does not help. The town sits on Thames river gravels, and when the river runs high the water table in the gravel rises with it. Groundwater then stands close to the surface, silt finds its way into ageing pipework, and yard gullies drain sluggishly, so a partial blockage that might go unnoticed on higher ground becomes a flooded path here.
Then there is the town centre itself. Windsor Castle draws around 1.5 million visitors a year, and the restaurants, cafés and hotels that feed them put a heavy load of fat, oil and grease into the drains behind the commercial streets. Grease cools, hardens and narrows the pipe until a Saturday lunchtime rush tips it over the edge.
How we clear blocked drains
We start at the nearest access point, confirm where the blockage sits, and give you an exact price before any work begins. Straightforward soft blockages are cleared by rodding. Grease, scale and compacted silt get high-pressure jetting at up to 4000psi, which scours the pipe wall clean rather than punching a hole through the blockage. If the same drain keeps blocking, a CCTV drain survey in Windsor finds the underlying cause, which matters on older clay runs.
Drain rodding starts from £80, jetting from £150, a CCTV survey from £120 and an emergency call-out from £120. All prices include VAT, with the exact figure agreed with you before work starts.
Windsor blocked drain FAQs
Who is responsible when a shared terrace drain blocks in Windsor?
Most Victorian terraces around Peascod Street, Clewer and the station share drain runs. The section serving only your home is your responsibility; the shared run beyond your boundary is normally down to Thames Water, who provide Windsor’s sewerage. We tell you on site where the blockage sits, so you never pay us to clear a pipe that is the water company’s job.
Why does my Windsor gully overflow in wet weather when the drain seems fine?
On the river gravels near the Thames, wet weather lifts the water table and washes silt into old pipework, so a gully that copes in dry spells suddenly cannot. Jetting the silt out usually restores full flow; if it recurs each winter, the pipe itself likely has a defect worth locating.
Can you clear a blocked restaurant drain outside trading hours?
Yes. We work 24/7, so commercial kitchen drains can be jetted before opening or after close, and a grease blockage never has to cost you a day’s covers.
Water rising, or a drain you cannot shift? Call TrueFlow on 0808 175 7440 for help across Windsor, day or night, or see everything we cover locally on our Windsor plumbing and drainage page.