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Unblocking Outside Drains and Resolving Pitch Fibre Pipe Issues: Effective Drain Clearance Techniques and Solutions

Dealing with a blocked outside drain and pitch fibre pipe problems can be a frustrating and inconvenient experience for homeowners. From slow drainage to potential water damage, these issues require immediate attention and effective solutions. In this comprehensive blog post, we will delve into the causes of blocked outside drains, the challenges posed by pitch fibre pipes, and provide expert insights on unblock outside drains and clearing pitch fibre pipes. With our helpful tips and techniques, you can address these common plumbing issues efficiently and restore the functionality of your drainage system.

Understanding Blocked Outside Drains

  1. Causes of Blocked Outside Drains

Blocked outside drains can be caused by various factors, including:

  • Accumulation of debris: Leaves, dirt, and other debris can accumulate in the drain, resulting in a blockage.
  • Tree root intrusion: Tree roots can grow into outdoor drains, causing obstructions and damaging the pipes.
  • Structural issues: Cracks, breaks, or collapses in the drain pipes can impede the flow of water and lead to blockages.
  1. Signs and Symptoms of Blocked Outside Drains

Recognizing the signs of a blocked outside drain is crucial for prompt intervention. Some common signs include:

  • Slow drainage: Water takes longer than usual to drain away, indicating a blockage in the pipe.
  • Foul odors: A blocked drain can result in unpleasant smells due to the accumulation of stagnant water and debris.
  • Gurgling sounds: Air trapped in the blocked drain can create gurgling or bubbling noises.
  • Water pooling or flooding: If left unresolved, a blocked outside drain can cause water to pool or flood in the affected area.

Pitch Fibre Pipes: Understanding the Challenges

  1. An Overview of Pitch Fibre Pipes

Pitch fibre pipes were commonly used in drainage systems from the 1960s to the 1980s. Understanding their unique characteristics is essential when dealing with pitch fibre pipe problems. Key points include:

  • Construction and material composition of pitch fibre pipes.
  • Lightweight nature and ease of installation.
  • Disadvantages and limitations of pitch fibre pipes in terms of durability and longevity.
  1. Common Issues with Pitch Fibre Pipes

Pitch fibre pipes are prone to several issues, including:

  • Deformation: Over time, pitch fibre pipes can become deformed or misshapen, leading to blockages and reduced water flow.
  • Deterioration and corrosion: The coal tar used in pitch fibre pipes can degrade, causing the pipes to weaken and potentially collapse.
  • Blistering: The exposure of pitch fibre pipes to hot water can cause blistering, resulting in swelling or bubbling on the pipe’s surface.
  • Vulnerability to tree root intrusion: Unlike traditional pipes, pitch fibre pipes are more susceptible to tree root penetration, leading to blockage formation.

Effective Drain Clearance Techniques

  1. Home Remedies for Unblock Outside Drains

There are several home remedies you can try to unblock an outside drain, including:

  • Boiling water: Pouring boiling water down the drain can help dislodge minor blockages.
  • Baking soda and vinegar: A mixture of baking soda and vinegar can create a chemical reaction that helps break down debris and clear the pipe.
  • Manual clearing with a plunger or drain snake: Using a plunger or drain snake can physically dislodge blockages, allowing water to flow freely.
  1. Professional Drain Clearance Methods

For more stubborn or persistent blockages, it is advisable to seek professional drain clearance services. Professional techniques include:

  • High-pressure water jetting: This method utilizes a powerful water jet to blast away blockages and clear the pipe effectively.
  • Drain rodding: Drain experts use flexible rods to dislodge and break down blockages, providing a clear path for water flow.
  • Drain excavation: In severe cases, when other methods do not work, drain excavation may be required to access and repair the blocked section of the pipe.

Resolving Pitch Fibre Pipe Issues

  1. Repairs and Fixes for Pitch Fibre Pipes

While pitch fibre pipes have inherent limitations, there are repair options available, including:

  • Relining: The process involves inserting a new liner into the existing pipe, effectively sealing cracks and improving its structural integrity.
  • Patch repairs: Small sections of damaged pipes can be removed and replaced with new material.
  • Pipe bursting: This method involves bursting the old pipe outwards while simultaneously pulling a new pipe into place, resulting in a more durable and reliable solution.
  1. Replacing Pitch Fibre Pipes

In some cases, complete pipe replacement may be necessary. Replacing pitch fibre pipes with more durable materials, such as PVC or HDPE pipes, offers long-term solutions and reduces the risk of future problems.


Unblocking outside drains and resolving pitch fibre pipe issues require a systematic approach and a clear understanding of the underlying problems. By identifying the causes and signs of blocked outside drains, you can take appropriate actions promptly. For pitch fibre pipes, weighing the available repair options against the long-term benefits of replacement is important. Whether you choose to attempt home remedies or seek professional assistance, it’s crucial to address these issues promptly to avoid further damage and restore the functionality of your drainage system. Remember, prevention is key to maintaining a healthy and efficient drainage system. Regular inspections, proactive tree root management, and periodic maintenance can help prevent future blockages and pipe issues. By following our expert advice, you can effectively address blocked outside drains and pitch fibre pipe problems, ensuring the smooth operation of your drainage system for years to come.



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