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A blocked outside drain can quickly cause standing water, overflowing gullies, unpleasant smells and disruption around your property. Outside drains are exposed to leaves, soil, silt, debris and surface water, so blockages can build up gradually before becoming a visible problem.
Drain Division provides professional blocked outside drain services for homes, landlords, commercial premises and managed properties. Our drainage engineers can assess the outside drain, clear the obstruction and advise whether the issue is local to the gully or connected to a wider drainage problem.
If wastewater is backing up, water is overflowing close to the property or several drains are affected, you may need emergency drain unblocking or wider blocked drain services.
Common Signs of a Blocked Outside Drain
You may have a blocked outside drain if you notice:
Outside drain blockages should be dealt with quickly, especially if water is collecting near the building or the blockage is affecting internal drainage.
Outside drains often block because they collect material from gardens, driveways, patios, paths and roofs. Unlike internal waste pipes, outside drains are more exposed to weather, surface water and debris.
Common causes include:
If the same outside drain keeps blocking, the problem may be deeper in the pipework. A CCTV drain survey can help identify root ingress, pipe damage, heavy silt build-up or a collapsed section of drain.
Our engineers can assess the outside drainage point and work out whether the blockage is in the gully, trap, inspection chamber or further along the drainage run. The right method depends on the cause of the blockage and how the outside drain connects to the rest of the system.
Outside drain unblocking may include:
Where the issue is caused by damaged drains, Drain Division can advise on suitable next steps, including drain relining or pitch fibre pipe repair or replacement where relevant.
A blocked outside drain can be a standalone problem, but it can also be linked to internal drainage issues, surface water problems or defects within the wider pipework.
You may also need:
Drain Division provides blocked outside drain services across many areas, including Aldershot, Basingstoke, Guildford, Reading, Southampton and Winchester.
What causes an outside drain to block?
Outside drains are commonly blocked by leaves, soil, silt, mud, garden debris, grease, food waste, tree roots or damaged pipework.
Why is my outside drain overflowing?
An overflowing outside drain usually means water cannot flow away properly. This may be caused by a blocked gully, trapped debris, heavy silt build-up or a blockage further along the drainage system.
Can a blocked outside drain affect toilets and sinks?
Yes. If the outside drain connects to the same drainage system, a blockage can cause slow drainage, gurgling noises or backing up from internal toilets, sinks, baths or showers.
Should I clear leaves from around an outside drain?
Keeping leaves, soil and surface debris away from outside drains can help reduce the risk of blockages, but professional help may be needed if water is already backing up or the drain is overflowing.
Will I need a CCTV drain survey for a blocked outside drain?
Not always. A CCTV drain survey may be recommended if the outside drain keeps blocking, if the cause is unclear or if there are signs of root ingress, collapsed pipework or hidden damage.
Contact our team of experts today. Our offices are open 6am to midnight 7 days a week.
