JD Drainage Solutions
Gully Cleaning & Unblocking
for Roads, Yards, Car Parks
& Commercial Forecourts
Silt, leaves and debris turn a working gully into a flood risk in a single season. We empty, jet and inspect — restoring full surface water capacity before the next storm arrives.
25+
Years of Experience
60×5★
Reviews
✓
Fully Insured
✓
NRSWA Accredited
✓
Contracts Available
What Gully Cleaning Actually Involves
A gully is the trapped surface drain you see at the kerbside, in car parks, on forecourts and at the base of downpipes. Its job is to take surface water off the hard standing and into the drainage system while trapping silt, leaves and debris in a sealed chamber so they don't blow downstream and block the main run.
Over time that trap fills up. Once it's full, water bypasses it and silt enters the drain. The drain then narrows, slows, and starts to back-surface in heavy rain. The first symptom is usually surface flooding at the lowest point of the property — which is often a customer-facing area, a loading bay or a doorway.
Proper gully cleaning empties the silt trap completely, jets the outflow pipe to confirm flow, and inspects the grating for damage. Tipping a bucket of water down it doesn't count. We use a vacuum tanker for the silt and a high-pressure jet for the outflow on every visit.
What Blocked Gullies Actually Cost You
Surface water flooding from a blocked gully is the single most common cause of preventable insurance claims on commercial premises. When a car park floods, customers don't shop. When a loading bay floods, deliveries get cancelled. When a forecourt floods, you fail your environmental obligations under the Pollution Prevention Guidelines.
Local authorities and highway agents are required to maintain road gullies. Private property owners are required to maintain everything on their land. If a flooded gully on your forecourt causes damage to a neighbouring property, vehicle, or contributes to a public liability claim, your insurer will ask for service records before they pay out. No records, no payout.
Silt that enters the drain because the gully wasn't trapping it accelerates downstream blockages. A neglected gully isn't just a flood risk at the gully itself — it's a pre-loaded blockage for the rest of the system. A £60 routine empty often prevents a £600 main drain clearance.
Our Gully Cleaning Process
Survey & Access Plan
For larger sites we map gully locations, agree access windows (out-of-hours where required) and confirm any traffic management or permits needed.
Vacuum Emptying
Every gully is emptied to the base of the silt trap using a high-capacity vacuum tanker. Volume removed is recorded per gully on the service report.
Jet & Flow Confirmation
The outflow pipe is jetted at controlled pressure and we confirm free flow into the connecting drain. Restricted outflows are recorded for follow-up.
Grating & Frame Inspection
Gratings are lifted, checked for damage, and re-seated correctly. Loose or cracked frames are flagged with photos and quoted separately.
Service Report
You receive a per-gully report listing location, volume removed, flow status and any defects spotted. Ideal for landlord and insurer records.
Why Property Managers Choose Us
Full Tanker Capability
We empty silt traps properly — not just remove the top inch. Volumes recorded per gully on every visit.
Scheduled Maintenance
Annual, bi-annual or quarterly contracts. We arrive on schedule without needing reminders.
NRSWA for Highway Work
Fully accredited for road gully work including traffic management and permit applications.
Out-of-Hours Service
Retail, hospitality and forecourt sites cleaned outside trading hours so your business never stops.
Photographic Reports
Per-gully report with photos of any defects. Perfect for insurer evidence, landlord records and audit trails.
Honest Pricing
Per-gully or per-site fixed pricing. No mileage surcharges, no hidden disposal fees.
Gully Types, Frequencies & What to Specify
The most common gully on UK commercial sites is the trapped road gully — a concrete or polypropylene pot with a water seal at the outflow. The seal stops sewer gases and pests entering the surface system. When the trap dries out (in long dry spells) or fills with silt, the seal breaks and smells, flies and rodents follow.
Yard gullies are similar but smaller, used for paved areas, courtyards and access ramps. They typically have a removable bucket that collects silt for easy manual emptying, but the bucket still fills up — and once full, the gully stops trapping silt and starts feeding it into the system.
Slot drains and channel drains (such as ACO Drain) are used across large hard standings, swimming pool surrounds and accessible thresholds. They have very high inflow capacity but limited silt-trapping volume — which means they need more frequent cleaning, not less.
Petrol forecourts, vehicle workshops and HGV yards have additional regulatory requirements: a Class 1 forecourt separator (oil interceptor) is normally installed between the gully and the main drain to prevent hydrocarbons reaching the sewer or watercourse. These separators must be inspected at least every 6 months under the Pollution Prevention Guidelines and emptied when the oil layer exceeds defined thresholds.
Recommended service frequencies: annual for low-traffic domestic and small commercial yards; bi-annual (spring and autumn) for most car parks and forecourts to catch leaf-fall and grit; quarterly for high-traffic retail, fast food and HGV yards; and continuous monitoring with monthly servicing for petrol forecourts under PPG3.
Damaged gully frames are a common safety issue we find on inspection. A cracked or rocking frame is a trip hazard, a vehicle damage claim waiting to happen, and accelerates failure of the underlying chamber. We quote frame replacement separately so you can budget — but we will never leave a known safety defect unreported.
Frequently Asked Questions
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