What Is a Drain Survey?

What is a Drainage Survey? 

A Drainage Survey is a detailed examination of a drainage system, both internally and externally, to check for any blockages or potential problems. It should be done by a qualified professional who knows exactly what they are looking for. A drain survey can involve using cameras to inspect inside pipes and can often be an inspection from outside the property to check the overall condition of the drains. 

It's important to carry out a drainage survey before commencing any major works, such as major building work or landscaping so that you can ensure there are no underlying issues in your system. This is particularly important if you're planning to extend your property, as any drains that could be affected will need to be inspected and possibly replaced. 

Drainage problems 

Drainage issues can lead to serious damage to your property, costing you both time and money. It's essential to make sure your drains are in good condition and that you have taken any necessary measures to prevent future issues.

Drainage problems can range from slow-draining sinks and baths to more serious issues such as flooding, blockages or even subsidence. In some cases, these problems can be caused by damage to pipes or tree root infiltration, but they can also result from neglected maintenance or changes in the climate. 

Your drainage system 

Your drainage system comprises a network of pipes and drains which help to transport wastewater away from your home. In most properties, drains run from bathrooms and kitchens to the main sewer pipes beneath the ground. 

The most common type of pipe used in drainage systems is polyvinyl chloride (PVC). This is a strong and durable material which is resistant to corrosion and damage. Older properties may have cast iron or clay pipes, which can become easily blocked due to their narrow passages. 

Benefits of a drain survey 

A drain survey can give you peace of mind that your drainage system is up to date and working properly. A thorough inspection by a qualified surveyor will identify any issues that may need to be addressed, such as root infiltration, blockages or damage to the pipes. 

In addition, a drain survey will show whether any of the pipework needs to be replaced or upgraded, and if any major repairs or alterations need to be carried out. This can help to avoid any costly and unexpected problems further down the line. 

What are the signs of a blocked drain? 

One of the telltale signs that something is wrong with your drainage system is a noticeable smell. If you begin to notice an unpleasant odour emanating from sink, shower or bath drains, it could be a sign that the drain is blocked. 

Other signs to look out for include gurgling noises coming from the plughole, or slow-draining water. Water may also back up in the sink or tub when the toilet is flushed, or bubbles may appear in the toilet bowl. 

If you see any of these signs, it is advisable to call a professional plumber to carry out a drain survey and if necessary clear the blockage. This will prevent any further damage and allow you to get your drainage system running as it should.