A CCTV Drain Survey involves sending a remote controlled high-tech camera along a pipe, drain or sewer to provide detailed information about the structural condition of the drain system. The CCTV Drain Survey records high clarity images that are useful for establishing the cause of persistent or recurring blockages. They can also be used as part of a pre-purchase CCTV survey, or build-over survey, to detect any underlining problems that the home buyer should be aware of prior to purchase.
Why have a CCTV drain survey?
There are a number of reasons when a CCTV drain survey can be useful:
- If there is a persistent or recurring blockage, then a CCTV drain survey can be a fast and cost effective way to identify the problem and cause of blocked drains.
- Home buyers will often get a pre-purchase CCTV drain survey to check for underlying problems, or risk factors, that may lead to future problems that the homebuyer should be aware of before completing the purchase.
- Homeowners, may sometimes get a build-over CCTV drain survey when having building work done, such as an extension.
- Rats and other rodents often gain access to buildings through the drainage system. If you have ongoing problems with rats or other rodents; then a CCTV drain survey can be useful for establishing if there are any entry points where rodents may be gaining access through the drainage system.
What problems can a CCTV Drain Survey identify?
Some of the problems that can be identified by a CCTV Drain Survey include:
- Pipe scale – in hardwater areas lime scale can build up within the drainage system, causing a narrowing of drainage pipes which increases can the incidence of blockages. A CCTV drain survey can help to identify the level of pipe scale build up.
- Tree root ingress – this is where roots (particularly tree roots) begin to ingress into the joints of the drain system. Overtime this can lead to a genuine problem with potentially costly repairs. Read more about tree roots in drains.
- Broken, partially or fully collapsed pipes – a CCTV drain survey is the quickest and most cost-effective method for locating broken, partially, or fully collapsed drain pipes.
- Displaced and open joint connections – displaced or open joint connections can cause sewerage to leak out of the drainage system. If left unchecked this may eventually lead to the collapse of the drain. Displaced joints are often entry points for unwanted pests to gain entry into buildings.
- Holes, Cracks and Hairline cracks – small hairline cracks allow waste water to slowly seep out of the pipe. Overtime hairline cracks can gradually increase in size, until they become a more serious and expensive problem. If there are larger cracks and holes present in the drain pipework there will be a larger leakage of sewer waste, and these present a point for rodents (such as sewer rats) and other pests to gain entry to a property.
How long does a CCTV Drain Survey take?
Typically, a CCTV drain survey will take around 2-3hours for 2 or 3 bedroom property. Larger houses will require additional time e.g. a 4 bed house would typically require 4 hours, and a 5 bed house 5hours to complete the survey. The first hour of the survey involves drain jetting/jet washing the pipes, which helps to flush out grease, fats, silt and other waste. This ensures that the images are of a high enough quality to identify any problems within the drainage system. The remaining time is devoted to completing the survey.
How much does a CCTV Drain Survey Cost?
The typical CCTV Drain Survey cost is £80-100 per hour – the total cost will vary depending on the size of the house. Most contractors will be happy to provide you with a no obligation quote.