Soil & Waste Pipework

Soil and waste pipework is the internal drainage network that carries wastewater away from toilets, sinks, showers, and commercial kitchens. When it blocks, leaks, or backs up, the impact is immediate: unusable toilets, foul odours, hygiene risks, and disruption to staff and customers.

ICE Drainage provides soil and waste pipework services across London and the Home Counties, supporting hospitality venues, commercial buildings, and facilities management teams with both reactive call-outs and planned maintenance.

What counts as soil and waste pipework?

In simple terms, soil pipework carries discharge from toilets and urinals, which has a higher solids content, while waste pipework carries wastewater from basins, sinks, showers, dishwashers, and other appliances.

On commercial sites, this can include vertical soil stacks, horizontal branches serving washrooms and kitchens, connections to external drainage or manholes, and venting arrangements such as air admittance valves.

Because much of this pipework is internal, and often boxed in, problems can escalate quickly if they're not properly diagnosed.

Common soil and waste pipework problems we fix

We're often called out for:

Blocked toilets or urinals affecting multiple cubicles
Slow-draining sinks and repeated blockages
Back-ups into washrooms or kitchen areas
Foul odours from stacks or waste lines
Leaks from joints, cracked pipework, or failed seals
Noisy pipework or gurgling, often linked to venting issues
Problems that keep coming back after a quick fix that didn't address the cause

In hospitality and high-footfall sites, even a short outage can mean customer complaints, lost revenue, and compliance concerns.

Typical causes, and why they keep coming back

Soil and waste blockages are rarely random. Common causes include fat, oil, and grease entering waste lines from kitchens, scale build-up narrowing older pipework, foreign objects flushed or washed into the system, poor gradients or sagging pipe runs that hold water and debris, root ingress where internal pipework meets external connections, and damaged pipework or displaced joints.

If you're seeing repeat incidents, it's usually a sign the system needs a proper clean, an investigation, or a targeted repair.

Our soil and waste pipework services

We tailor the approach to the site, the access available, and how urgent the problem is.

Reactive unblocking for washrooms and kitchens

When toilets or sinks are out of action, we prioritise getting service safely restored, using mechanical unblocking, targeted jetting where appropriate, clearing localised obstructions, and checking nearby access points such as rodding eyes, chambers, or stack access. We aim to get you operational quickly, then advise on how to stop it happening again.

Internal pipework cleaning

For sites with recurring issues, we can carry out a more thorough clean of internal waste runs and stacks, removing grease residue, sludge and organic build-up, and scale and debris that causes snagging. This is particularly valuable for restaurants and commercial kitchens, hotels and leisure sites, multi-tenant commercial buildings, and sites with high washroom usage.

Targeted repairs and replacements

If the issue is structural rather than just a blockage, we can repair or replace damaged sections, renew joints and seals, correct poor connections where practical, and make good around access points. Where replacement is needed, we focus on a solution that's easy to maintain and minimises future disruption.

Investigation and fault finding

When the cause isn't obvious, we investigate the system to find the exact location of the restriction, any defects contributing to repeat blockages, and connection issues between internal and external drainage. This can include a CCTV drainage survey where access allows, helping you move from reactive call-outs to planned remedial work.

Soil stack issues in commercial buildings

Soil stacks are a common pinch point in multi-storey buildings and busy hospitality sites. Symptoms can include multiple toilets backing up at once, slow drainage across several fixtures, odours in risers or service cupboards, and gurgling sounds or trap loss. These can be caused by blockages, poor venting, or build-up inside the stack. We assess the best access route and recommend the most effective clean or repair.

Planned maintenance for soil and waste pipework

If you're managing multiple sites or a busy venue, planned maintenance is often the most cost-effective route. A typical approach includes routine checks of high-risk lines such as kitchens and high-use washrooms, periodic cleaning to remove build-up before it becomes a blockage, reporting and recommendations for remedial work, and support for facilities teams with evidence and service records. This reduces emergency call-outs, protects your reputation, and keeps washrooms and kitchens operational.

Working around live sites

We understand that internal drainage work can be sensitive. We can plan around guest experience and customer footfall, back-of-house operational windows, delivery schedules and peak service times, permit-to-work processes on managed sites, and out-of-hours work where required. Our focus is always on safe working, clear communication, and minimal disruption.