Drainage issues are a common problem for homeowners and businesses alike. Blocked underground drainage can lead to a multitude of problems, including water damage, foul odours, and even health hazards. Understanding the reasons behind these blockages can help in taking preventive measures and dealing with the problem effectively when it arises. In this post, we will explore the various causes of blocked outside drains and what you can do to prevent them.
Common Causes of Blocked Outside Drains
Outside drains can become blocked for several reasons, ranging from natural causes to human activities. Here are some of the most common factors that contribute to blockages in outdoor drainage systems:
Tree Roots Intrusion
Tree roots are one of the leading causes of blocked drains. They can infiltrate pipes through tiny cracks or loose joints in search of moisture. Over time, these roots grow and expand, causing obstructions within the pipes. They can also attract other debris, which compounds the blockage. If left unchecked, tree roots can cause significant damage to your drainage system, making it necessary to carry out costly repairs or replacements.
Accumulation of Leaves and Twigs
Autumn can be particularly troublesome for outside drains due to the shedding of leaves. Leaves, twigs, and other garden debris can accumulate and clog up the drains. This natural debris can also decompose over time, creating a dense, soggy mass that is difficult for water to penetrate. Regularly clearing your garden and guttering can help prevent this type of blockage.
Fat and Grease Build-Up
When fat, oil, and grease from kitchen waste are disposed of down the sink, they can solidify in the pipes, especially when they come into contact with cold outside temperatures. This build-up narrows the pipes, reducing the flow of water and eventually leading to a blockage. To avoid this, it is important to dispose of grease and oil waste properly, rather than washing it down the sink.
Silt and Dirt
Over time, silt, sand, and dirt can enter your outside drains, particularly after heavy rain or flooding. This can slowly build up and obstruct the flow of water. Regular maintenance, including the cleaning of drain grates and traps, can help to prevent silt and dirt from causing blockages.
Foreign Objects
Foreign objects such as sanitary products, nappies, and wet wipes are often wrongly flushed down the toilet. These items are not designed to disintegrate in water and can easily cause blockages in outside drains. These materials can get caught on tree roots, rough surfaces inside the pipes, or accumulate at bends and junctions, leading to severe clogs that can be challenging to clear. It is essential to be cautious about what gets flushed down the toilets and sinks to prevent such blockages.
Collapsed Pipes
Another serious cause of blocked outside drains is collapsed pipes. This can occur due to general wear and tear, ground movement, heavy traffic above ground, or poor-quality pipe materials. A collapsed pipe not only causes a blockage but also requires immediate attention and repair to restore proper drainage and prevent further damage to the surrounding area.
Heavy Rain and Storms
The UK is no stranger to heavy rain and storms, which can overwhelm drainage systems. During extreme weather conditions, drains may not be able to cope with the volume of water, leading to overflow and blockages. The situation can be exacerbated if the drains are already partially blocked with debris. Adequate preparation and regular maintenance of drainage systems can help mitigate the impact of heavy rainfall.
Rodent Infestation
Surprisingly, rodents can also be a reason for blocked outside drains. Rats and mice are known to nest in sewers and can cause blockages by bringing in nesting materials or by their bodies if they become trapped and die within the pipes. Regular inspections can help detect and address any signs of rodent infestation before they lead to drainage problems.
Preventing Blocked Outside Drains
Prevention is always better than cure, and this is particularly true for blocked drains. Here are some tips to help prevent blockages in your outside drains:
- Regularly clean and remove leaves, twigs, and debris from gutters, downpipes, and drain grates.
- Dispose of fats, oils, and grease in the rubbish bin instead of pouring them down the drain.
- Install drain guards to catch debris and prevent it from entering the drainage system.
- Conduct regular inspections of your drains for any signs of damage or intrusion by tree roots.
- Avoid flushing anything other than human waste and toilet paper down the toilet.
- Consider having a professional clean and inspect your drains periodically to ensure they are in good working order.
What to Do If Your Outside Drain Is Blocked
If you find that your outside drain is blocked, it is important to act quickly to prevent any further damage. You can attempt to clear the blockage yourself using a drain rod or a high-pressure water jet. However, for more severe blockages or if you are unsure of the cause, it is advisable to call in a professional drainage company. They have the expertise and equipment to diagnose the issue accurately and effectively clear the blockage without causing additional damage to the pipes.
Professionals may use CCTV drain surveys to inspect the inside of the drainage pipes and identify the exact location and cause of the blockage. This non-invasive technique allows them to assess the condition of the pipes and recommend the most appropriate solution.
Once the blockage is cleared, it is important to take steps to prevent future blockages. This might include repairing any damaged pipes, cutting back tree roots, or making changes to your waste disposal habits.
The Importance of Proper Drain Maintenance
Prper drain maintenance is not only crucial for preventing blockages but also for ensuring the longevity of your drainage system. Neglect can lead to more serious problems, which might require extensive repairs or even a complete replacement of the drainage system.
Regular maintenance should include cleaning and checking for signs of wear and tear, as well as promptly addressing any issues that arise. By staying vigilant and taking care of your drains, you can save yourself the inconvenience and expense of dealing with blocked outside drains.
Summary Of Why Do Outside Drains Get Blocked?
Blocked outside drains can be a nuisance and cause significant problems if left unattended. The causes are varied, but with proper knowledge and maintenance, most blockages can be prevented. It is essential to be mindful of what goes into your drains and to keep them clear of debris.
In the event of a blockage, quick action is necessary to prevent further complications. While some blockages can be handled with DIY methods, don’t hesitate to call in the professionals for more complex issues.
Remember, the health of your outside drains is crucial to the overall wellbeing of your property’s drainage system. Regular checks and maintenance can go a long way in keeping your drains flowing freely and your property safe from the potential hazards of blocked drains.
