CCTV (Closed-Circuit Television) is perhaps best known as a security system used mainly in areas like car parks, shopping centres, and banks. But it is also used as a technology to inspect drainage systems. The specialised CCTV cameras can be guided through underground pipes, enabling drainage experts to examine inaccessible areas.
A CCTV drain survey offers you an internal view of the drainage system without you having to excavate a pipe. Using the camera, the survey can help you find issues like cracks, blockages, damaged pipes, root intrusion and other defects. It can also help inspectors pinpoint the exact location of the issue, which is valuable in planning necessary repair and maintenance work.
For domestic and commercial properties, the CCTV drainage survey is a useful method to monitor the underground drainage system. It can be used for regular inspections, examining frequent blockages, identifying drainage issues, or evaluating drains before and after the building work. The key advantage of going for this survey is to understand what is happening underground before deciding on actionable steps.
What is a CCTV Drain Survey, and Why Is It Important?
The process of a CCTV drain survey consists of introducing a small, waterproof camera into the drainage system. As the camera passes through the pipes, it records their condition in high resolution. This helps drainage engineers find damage, obstructions, and severe issues without the need to dig into pipes.
The invisible issues with drainage systems are frequently unidentified until they reach a breaking point. However, with CCTV drain surveys, you will get clear proof of collapses, clogs, root ingress and other problems, and you do not have to excavate the pipes. This method is exact and non-disruptive, and is an ideal choice for developers, landowners and infrastructure managers.
How CCTV Drain Surveys Work: A Step-by-Step Guide
CCTV drain inspection contains different steps to make sure you get a complete examination of your drainage system:
Preparation
The drainage system is prepared by clearing the area and making sure there is an accessible route to the pipes.
Equipment Setup
The specialists set up equipment for the CCTV drainage inspection that contains a camera attached to the flexible rod.
Camera Insertion
The camera is cautiously introduced into the drain to record live footage within the pipe.
Live Monitoring
The live video is checked on the screen to examine the condition of the pipes and find any problems.
Data Collection
For comprehensive analysis, photographs and video recordings are captured.
Analysis and Reporting
To identify issues, the captured footage is examined, and a comprehensive report is prepared.
Conclusion and Advice
Specialised engineers offer guidance on various solutions to resolve any recognised problems.
CCTV drain surveys mainly help find severe issues before they occur, enabling preventive upkeep and increasing the longevity of the drainage system.
When is a CCTV Drain Survey Required?
A CCTV drain survey is beneficial when you want to know what is happening within the drainage system without excavation of pipes. The survey can be an important option in multiple situations:
Before Buying a Property
One of the primary reasons for conducting a CCTV survey is a property purchase. A basic property survey does not normally include drainage examinations, yet repairing damaged drains can cost thousands of pounds. A pre-purchase survey can cost between £200 and £350 to help you find possibly highly expensive drainage issues before you buy.
Recurring Drainage Issues
When there are frequent blockages or drainage issues and many unsuccessful attempts have been made to unclog the drain, a CCTV survey can help find the underlying problem. It can identify problems like damaged joints, cracks and tree roots that basic cleaning processes might not fix.
Frequent Unpleasant Odours
If you experience frequent unpleasant or sewage-like smells around your property, it must not be overlooked. They are warning signs for issues like defective joints, broken pipes or structural failures of the drainage system. A CCTV survey can help you pinpoint the main cause of the issue and figure out whether maintenance is needed.
During Construction or Extensions
For specific construction projects, planning authorities or building control departments might need CCTV drain surveys. For instance, if you are constructing within 3 metres of a public sewer, you may require surveys before and after construction. This is key to confirm that the drain is undamaged, particularly when expanding your property or connecting new drainage.
For Insurance Claims
If you want to claim insurance for drainage-linked damage, you may require an expert drain survey. Drainage problems like flooding, environmental hazards, or ground movement might need proof that shows the main cause and level of damage before approving maintenance work.
For Commercial Properties and Landlords
Commercial properties and landlord services can benefit from frequent preventive drain surveys. Conducting annual examinations can help find emerging issues which could lead to severe damage to residents or business functions. Initial findings might also minimise the threat of costly emergency repairs and loss of profit.
Common Drain Problems Identified by CCTV Drain Surveys
A few common issues are found after conducting a CCTV drain survey, including:
Blockages
One of the most common issues in drainage systems is blockages that can frequently be caused by non-degradable materials, debris, or buildup inside the drain. These issues can lead to major problems such as slow drainage or even backflow when overlooked.
Misalignment
Misalignment of pipes or joints can be a major cause of leakages or low water flow. These issues can result in diminished performance and severe damage to nearby areas.
Pipe Damage
The age, ground movement, or external pressure can cause the pipes to be damaged or crack. These problems directly affect overall functionality and often lead to drain leaks or decreased effectiveness in the drainage system.
Corrosion
Older metallic pipes are exposed to corrosion. This can influence the water flow with the passage of time and can result in leaks and reduced drainage effectiveness.
Tree root intrusions
Tree roots are recognised for root ingress that can cause blockages and extensive damage. Over time, they can degrade the structure of the pipes and lead to highly expensive repairs.
Sagging Pipes
The changing ground level can be the main cause of pipe sagging, creating low points where debris builds up. This accumulation can cause clogging, slowing down, or entirely damaging the drainage system.
Why Do I Need a CCTV Drain Survey as a Homebuyer?
Buying a home is considered a major investment. But invisible drainage issues can result in sudden maintenance costs when you move in. A basic house survey might not find every problem inside the pipes. That is why a CCTV drain survey offers clear evidence of its condition before you proceed with the buying process.
Identify Invisible Drainage Issues Before Buying
A CCTV drain survey finds issues that may be invisible during a basic property survey. These problems involve misaligned areas, collapsed or blocked pipes, and other drainage issues. When you identify these problems before buying the property, it offers you a chance to enquire with your seller to have them fixed or negotiate a price adjustment.
Also, identifying the problem before it gets worse can assist in negotiating a lower cost. For instance, spending around £200 on a survey can lessen the property price by £1500 to £3,000. These are the considerations to remember when making a property purchase.
Save Time and Avoid Unnecessary Excavation
The traditional procedure to identify underground drainage issues may require digging to reach the pipes. Conversely, a CCTV drain survey finds the problem by inserting a camera within the drainage system without requiring excavation of the property. This method allows for immediate examination while minimising the disruption to driveways, gardens, and other areas.
Help Prevent Pest Infestation
When drain pipes are broken or damaged, it can be an entry point for pests like rats and mice. If you observe signs of pest issues or need to check the condition of the drainage system before buying, a CCTV survey can help you find the openings, broken areas, or other severe issues. This enables you to resolve the issue earlier, before it becomes more severe.
Locate Problems Precisely
With a CCTV drain survey, you can find the exact location and the level of the drainage issue. When the problem is identified, drainage experts can plan the maintenance of the pinpointed area instead of disrupting large areas of the property. This can help minimise the disturbances and prevent pointless maintenance.
Pre- and Post-Conditional CCTV Drainage Surveys Explained
Pre-Conditional Survey
The pre-conditional survey finds out the current drainage layout, depth, ownership, flow direction, pipe size, shape, diameter and condition. This information helps designers make a strategy without disrupting the existing drainage system.
Planning Meeting
The planning meeting is also an important step. The problems identified from the drainage survey can guide the design of the drainage layout in collaboration with the engineer, architect, surveyor and contractor.
Post-Conditional Survey
A post-construction survey examines accessible drains once the work is done. It may help confirm that the drainage route remains clear, identify new damage or obstruction, and document its condition after construction.
Difference between Drain Survey and Drain Inspection
The terms are sometimes used loosely, but a drain inspection and a CCTV drain survey can describe different levels of investigation. A drain inspection is typically a basic check for visible issues such as persistent unpleasant odours, blockages, or slow-draining water. A CCTV drain survey is a more comprehensive examination using a specialised camera to inspect the underground pipes. It helps in finding invisible faults and evaluating the overall condition of the drainage system.
| CCTV Drain Survey | Drain Inspection |
| Detailed internal inspection | General inspection |
| Use specialist CCTV camera equipment | Contains visual checks |
| Find invisible pipe issues | Identify obvious issues |
| Examine underground pipework | Mainly checks accessible areas |
| Beneficial for comprehensive diagnosis | Beneficial for initial investigation |
| Takes longer time based on the system | May be relatively quick |
How Long Does a CCTV Drain Survey Take?
The most common question many people ask is how long a CCTV drain survey takes. The time taken by the CCTV drain survey is based on the size of the property and the condition of its drainage system. But the general idea is given below:
- For Residential Properties: A CCTV drain survey takes about 1-2 hours for a standard home.
- For Large Commercial Properties: A CCTV drain survey takes several hours or even days for large commercial properties, based on the size and severity of the drainage system.
Factors Affecting the Survey Duration
- Drainage System Size
Larger and more extensive drainage systems are more time-consuming to examine.
- Blockages and Damages
Clogged drains, damaged pipes, and other issues might postpone the inspection.
- Access Points
The number and accessibility of maintenance holes and other entry points can directly influence how quickly the survey continues.
- Detailed Checks
Evaluating pipe connections, joints, and areas with possible issues might need extra time.
What Do You Receive After the CCTV Drain Survey?
Once the CCTV drain survey is completed, you will receive a comprehensive report and suggestions. This information helps you know the condition of your drainage system and decide what action might be required.
The Survey Report
The comprehensive written report describes the survey findings that involve images or other proof of any issues and offers suggestions for repair and upkeep.
The report also explains the severity of the issue. Minor problems may only require monitoring or routine upkeep, as compared to more complex issues that need urgent maintenance. This helps you know which issue requires immediate action.
Furthermore, the report also finds the exact location of the issue inside the drainage system. When you find where the fault exists, it means treating the affected site rather than digging, which minimises repair costs.
Planning Repairs
When you have survey findings, you can use them to obtain quotes for any needed repairs. Contractors use this CCTV survey data to identify the problem and offer a more accurate price. In some situations, a survey identifies a broken pipe that needs to be repaired using a no-dig procedure. These methods, such as patch repairs and pipe lining, may be appropriate based on the type and location of the damage.
When a survey is carried out for any property purchase, the findings can also help you assess the condition of the drainage system before proceeding with the purchase. Major problems might need to be discussed for repairs or adjusting the purchase price.
Insurance and Warranties
An expert CCTV drain survey report gives written proof of the condition of the drainage system and any issues found in the inspection. This written evidence may be beneficial for drainage-related insurance claims based on the terms of your policy.
A few contractors offer warranties for maintenance work. A detailed CCTV survey can help workers identify the root cause and location of the issue, enabling them to choose a suitable repair method.
Future Maintenance
A CCTV drain survey offers you a beneficial record of the condition and design of your drainage system at the time of inspection. When you have another problem associated with a CCTV drain survey in the future, you can compare the new results with the previous report to understand whether any damage has worsened or new issues have shown up.
Benefits of CCTV Drain Surveys
Non-Invasive Inspection
A CCTV drain survey enables the drainage system to be inspected without digging it up. A specialised camera is inserted into the pipes to find the issues, minimising the necessity of using heavy equipment or intrusive work.
Cost-Effective Solution
A CCTV drain survey can help avoid the need for unnecessary maintenance by accurately showing problems in the drainage system. It can also help find minor issues earlier to prevent more severe and costly damage. Based on the condition of the pipes, some solutions such as jetting or lining are preferred rather than costly digging and replacing pipes.
Find Problems Quickly
Modern CCTV cameras offer clear photographs of the interior of the drainage pipes, which makes it simple to find the exact location and type of the issue. This can disclose invisible problems and help drainage experts suggest maintenance depending on the exact condition of the pipes.
Better Maintenance Planning
A CCTV drain survey offers a clear image of the overall condition of the drainage system. The survey report can highlight current or frequent issues and help in planning future maintenance. This enables problems to be resolved at the right time instead of becoming severe issues.
Helps Choose the Right Repair
A CCTV survey can identify the exact location and the level of the drainage issue, which helps you select the most suitable repair. On the basis of the problems, there are many options such as patch repairs, pipe relining, or drain jetting instead of replacing a complete section of the pipe. This focused strategy can minimise unnecessary digging, disturbance or costly repairs.
Evidence and Compliance
An expert CCTV drain survey offers written proof of the condition of the drainage system. The report may be beneficial for lenders, insurers, water authorities and planning requirements that involve build-over agreements. It can also provide evidence of the condition of the drains in case of disagreement over damage or drainage faults.
See the Technology Behind Our CCTV Drain Surveys
At Fast Drains, modern CCTV drain surveys use specialised equipment to examine the interior of the pipe without requiring extensive excavation. A small waterproof camera is introduced into the drainage system, allowing the inspectors to monitor the pipes from inside and find issues like damage, blockages and corrosion.
Waterproof CCTV Cameras
Small waterproof cameras are attached to flexible equipment that enables them to go through the drainage system. A light on the camera helps to brighten the interior of the pipe while the live photos can be monitored on the screen. This enables inspectors to find the exact problems and evaluate their complexity without excavating the drainage system.
Access Rods
The camera moves through the drainage system with the help of access rods such as bends and corners. This enables the inspectors to guide the camera with rods around the pipe and assess the areas that might be difficult to reach.
Robotic Crawlers
Rover cameras or crawlers that function remotely can be used for larger sewer pipes and more complex drainage systems. These cameras are controlled by the inspectors and moved through the sewer lines, which makes them more beneficial for assessing longer, larger sections of the drainage system.
Ultrasonic and Sonar Technology
Fast Drains also explains the use of ultrasonic waves and sonar technology that supports mapping the sewer layout and identifying blockages. This technology offers extra information when assessing larger or more complex drainage systems.
What the Technology Shows
The camera recording enables the surveyor to find the exact location and complexity of the drainage issue and signs of deterioration within the pipes. A complete CCTV survey offers a drainage map, diagnosis report, images and recorded footage of the examination.
How much is a CCTV drain survey in Reading?
In Reading, there is no fixed cost for a CCTV drain survey. The cost can vary based on the type and scope of the survey. But in the UK, the average cost of a CCTV drain survey ranges between £90 and £500. For instance, a pre-purchase CCTV drain survey for a basic house is approximately £250 to £350.
How to Choose a CCTV Drain Survey Company in Reading?
When choosing a company for your CCTV drain survey in Reading, you need to look for an experienced drainage engineer who can thoroughly examine the drainage system and provide an accurate report. The report typically includes photographs, diagrams of your drainage layout, and details of identified issues such as pipe damage and blockages.
If you want to select the right company for a CCTV drain survey, you can consider the following factors:
Professional Accreditation: Consider companies that are associated with known trade bodies like the National Association of Drainage Contractors (NADC).
Technology: Make sure the service you select uses modern CCTV technology to offer accurate, high-quality inspections.
Relevant Experience: Choose a company with a proven track record in drain surveying and resolving drainage problems.
Client Feedback: Check online feedback to measure the quality of the service.
Cost: Compare prices across companies to find a fair deal without sacrificing quality.
Final Thoughts
A CCTV drain survey is a practical method to find invisible drainage issues, inspect pipe conditions, and plan suitable repairs without unnecessary digging. By getting a professional survey, you can have valuable insights into your drainage system’s condition. This helps you avoid surprise expenses, whether you are buying a property, experiencing frequent blockages, or planning building work. It is key to select an experienced drainage specialist to make sure you get a detailed examination and receive a clear report that will help you manage your drains and address issues before they become more serious.
Want to find out what is happening beneath your property? Schedule a professional CCTV drain survey with Fast Drains. Our surveyors identify hidden drainage issues and assess the condition of your pipes. Contact us today to arrange your CCTV drain inspection.
Frequently Asked Questions
Is a CCTV drainage survey necessary before buying a house?
A CCTV drainage survey is not officially needed or included in an average house inspection. However, this survey is strongly suggested for pre-purchasing an older property or a home with underlying vulnerabilities.
Can I conduct a drain survey myself?
You can check accessible drain covers, gullies and other visible areas for observable issues. But you cannot completely inspect the underground pipes without specialised equipment. During a CCTV drain survey, a camera is used to find invisible damage, blockages and other faults. The report of findings may also be required for property purchase, insurance claims or planning projects, based on your requirements.
Can a CCTV drain survey find issues inside walls or under floors?
Yes, a CCTV drain survey helps uncover issues, provided there is access to the interior of the drain via maintenance holes or inspection chambers. The cameras can examine the pipes underneath floors or inside walls to find obstructions or damage.
Are drain surveys necessary for new builds?
Yes, particularly when there is potential impact on existing drainage or the site has a drainage history due to construction. A pre-construction CCTV survey assists in finding potential issues and verifies compliance with building regulations.