5 Warning Signs You Need a CCTV Drain Survey
Slow drainage, bad smells, or recurring blockages? Learn why a CCTV drain survey is the most cost-effective way to diagnose hidden drainage problems.
A drainage system is largely out of sight, meaning problems can develop unseen until they become severe. A CCTV drain survey uses a high-definition camera inserted into the pipes to inspect their condition from the inside, providing a clear, accurate diagnosis without the need for disruptive digging. Here are the five key warning signs that you need to arrange a CCTV survey.
1. Slow Drainage
. If multiple sinks, baths, or toilets are draining slowly, and plunging provides only temporary relief, there is likely a blockage or partial collapse further down the main line. A CCTV survey will locate the exact position and nature of the restriction.
2. Gurgling Sounds
. Strange gurgling or bubbling noises coming from plugholes or toilets indicate trapped air in the system. This is often caused by a blockage acting as a partial vacuum, restricting the smooth flow of water and air.
3. Recurring Blockages
. If you find yourself repeatedly clearing the same drain, only for it to block again a few weeks later, you are likely only treating the symptom, not the cause. A recurring blockage is a strong indicator of a structural defect, such as a cracked pipe, a displaced joint, or tree root ingress acting as a snagging point for debris.
4. Subsidence and Structural Cracks
. Leaking drains can wash away the supporting soil around the pipes and under the foundations of your property. If you notice new cracks in your walls, uneven paving, or unexplained dips in your driveway or garden, a collapsed or leaking drain could be the culprit.
5. Bad Smells
. A foul, sewage-like odour lingering inside or outside your property suggests that wastewater is not flowing away correctly. It could indicate a blockage, a cracked pipe allowing sewer gases to escape, or a dried-out trap.
A CCTV drain survey provides an accurate, HD visual record of the interior of your pipes. It reveals root ingress, collapsed sections, scale build-up, and joint displacements. Hampshire's varied soil conditions, from heavy clay to chalk, present unique challenges. Clay soils expand and contract significantly with moisture changes, putting immense pressure on underground pipes, while tree roots aggressively seek out the moisture inside drains.
Crucially, a CCTV survey saves money. By pinpointing the exact location and cause of the problem, targeted repairs like patch lining can be employed instead of widespread, expensive, and unnecessary guesswork excavation.
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