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Common Causes of Drain Blockages in Leicestershire Homes

Published 25 October 2025 · By Jet Waves Pressure Washing
Common Causes of Drain Blockages in Leicestershire Homes — Jet Waves Pressure Washing Leicester & Leicestershire

Outdoor drains in Leicestershire homes are quietly working away at the lowest point of your driveway, patio or yard. They only become a problem when they back up — usually at the worst possible moment, after the first heavy autumn downpour. Knowing the common causes helps you spot a developing blockage before it becomes a flood.

Leaf and grit build-up

This is by far the most common cause we see. Leaves blow into the gully, get wet, sink and form a soggy mat across the grate or in the trap below. Add a few weeks of grit and silt and the drain capacity has dropped by half without anyone noticing. A regular sweep and an occasional lift-and-clear of the cover prevents most of this.

Tree root intrusion

If your drain run passes near a mature tree, fine roots can find their way into the joints between sections of pipe. Roots seek moisture and nutrients, and an old clay pipe joint is a buffet. Once roots are in, they slow the flow, then they catch every bit of debris that comes past, then they block the drain. Root removal is a specialist job.

Subsidence and broken pipes

Older homes around Leicester sometimes have stretches of clay drain pipe that have shifted slightly with the ground over the decades. A small offset at a joint is enough to start catching debris. This eventually shows up as a recurring blockage in the same place — a sign that the issue is structural, not just dirty.

Wipes, rags and other surprises

You would not believe what gets flushed into outdoor gullies, mostly by accident. Tea bags, kitchen roll, food scraps, garden cuttings — all of them belong in the bin or the compost, not down the drain.

What we do

For surface gullies, channel drains and yard drains, we lift the cover, clear the debris and rinse the immediate run. For deeper structural issues we recommend a specialist drainage company. Call 07732 187000 for a free quote.

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