Question 1

What is drain rodding and when is it used in London?

Accepted Answer

Drain rodding is the manual method of clearing a blocked drain using flexible rods screwed together and pushed through the drain to dislodge or break up the blockage. A plunger or corkscrew attachment at the end breaks up or hooks the obstruction, allowing it to be flushed away. Drain rodding is used in London for: blocked outside drains (the inspection chamber or gully in the back garden), blocked underground soil pipes and drain runs, blocked connections to the main sewer, and shared drains in London terraced properties where a blockage affects multiple houses. It is the most cost-effective first approach for soft blockages (food waste, paper, build-up of fat and grease) and is usually available same-day. For harder blockages (tree roots, collapsed pipe, solid grease plugs), drain jetting or CCTV survey is required.

Question 2

What is the difference between drain rodding and drain jetting in London?

Accepted Answer

Drain rodding uses flexible rods pushed manually through the drain — effective for soft blockages (fat, paper, food, wet wipes, moderate grease) at accessible depths. It is lower cost (£65–£150) and requires no specialist equipment. Drain jetting (high-pressure water jetting) uses a high-pressure water lance (up to 4,000 psi) to cut through and flush out harder blockages — compacted grease, fat plugs, tree roots, scale build-up — and thoroughly cleans the pipe walls. Jetting is more effective for recurring blockages in London kitchens and for large-diameter London combined sewers. Jetting costs £120–£300 and requires specialist equipment. We typically start with rodding and escalate to jetting if the blockage is not cleared.

Question 3

Can I rod my own drains in London?

Accepted Answer

DIY drain rodding is possible for simple outside gully blockages using a hired rod set (£20–£40/day from most London hire shops). However, there are limitations: (1) Depth — London Victorian drain runs are often 1.5–2.5m below ground. Consumer rod sets rarely exceed 7–8m effective length. (2) Direction changes — underground drains change direction at inspection chambers. Rods can get stuck or 'run off' at bends. (3) Collapse risk — older London clay drain pipes (very common in Victorian and Edwardian terraces) can be fragile. Forcing rods can collapse a weakened pipe section, turning a blocked drain into a collapsed drain. (4) Shared drains — in London terraced properties, underground drains often serve multiple houses. Rodding from the wrong access point can cause issues for neighbours. A professional drain rod costs £65 and avoids these risks.

Question 4

Who is responsible for a blocked drain in a London property?

Accepted Answer

Drain responsibility in London: drains within your property boundary that only serve your property are your responsibility — you pay for rodding and repairs. Shared drains (drains that serve two or more properties) that run underground beneath your property became the responsibility of Thames Water (your local sewerage undertaker) under the 2011 transfer of private sewers — Thames Water is now responsible for these shared lateral drains. If you have a blockage in an underground shared drain in London, contact Thames Water (0800 316 9800, free from any phone) — they are required to clear it at no charge. Thames Water is NOT responsible for drain blockages caused solely by the occupant (misuse, wipes, oil disposal). Report shared drain issues at thameswater.co.uk or 0800 316 9800.

Question 5

Why are London drains more prone to blockages?

Accepted Answer

London drains are disproportionately prone to blockages for several reasons: (1) Victorian and Edwardian clay pipe infrastructure — approximately 30% of London's drainage network uses 100-year-old clay pipes that are rough-textured (encouraging fat adhesion) and may have settled or cracked, creating ledges where blockages form. (2) Combined sewer system — London uses a Victorian combined sewer system that carries both sewage and surface water. In heavy rain, surcharge causes back-up in private drain connections. (3) High restaurant and takeaway density — London's high density of food businesses generates significant fat, oil, and grease (FOG) that coats and blocks residential drains in their vicinity. (4) Wet wipes — TfL estimates London flushes more wet wipes per capita than anywhere else in England. (5) Tree root ingress — London's mature street tree stock (plane trees, limes) sends roots into clay pipe joints in residential gardens.

Question 6

How much does drain rodding cost in London?

Accepted Answer

Drain rodding costs in London: outside gully / inspection chamber rod (up to 5m): £65–£120. Underground drain rod (5–15m): £95–£180. Drain rod and CCTV survey (to confirm clear and check pipe condition): £150–£280. Drain jetting (escalation from rodding if required): £120–£300. CCTV survey only (to locate blockage): £120–£200. Emergency drain unblocking (24/7): £150–£300. No call-out fee — you pay for the work carried out. Thames Water shared drain clearing: free — call 0800 316 9800.

Drain Rodding London

Rodding vs. Jetting — Which Does Your London Drain Need?

🔧 Drain Rodding — From £65

💧 Drain Jetting — From £120

Drain Rodding Prices — London 2026

Drain Rodding Across London

Drain Rodding FAQs — London

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Service	Price
Outside gully / inspection chamber rod (up to 5m)	£65–£120
Underground drain rod (5–15m)	£95–£180
Drain rod + CCTV survey (confirm clear)	£150–£280
Drain jetting (escalation from rodding)	£120–£300
CCTV survey (locate blockage)	£120–£200
Emergency drain unblocking (24/7)	£150–£300
Thames Water shared drain clearing	Free — call 0800 316 9800