The continual loss of water into the ground can lead to subsidence. When all else fails and excavation and renewal is necessary CCTV Drain Survey have the experience to replace any pipework which is beyond an insitu repair. Whether for an access point or for a complete new system we can handle any job large or small.

Fractured Pipework Most drainage systems over 20 years old are constructed from earthenware pipework which is susceptible to fracturing, leading to the escape of water in the surrounding ground area. This can cause deterioration of the system and lead to further more serious structural damage. In turn the egress of water can affect the structural stability of nearby buildings.

Deformed Pipework During the 1960's a new pipe material called pitch fibre was commonly used. This was subsequently found to be inherently defective, with the pipework becoming deformed and delaminated and the resulting 'squashing' causing frequent blockages. When the deterioration has progressed insitu repairs may not be possible.

Repairs When a defect has been diagnosed within a drainage system, it is normally the case that expensive, disruptive and inconvenient excavations are necessary. With the aid of modern technology, which Drain24/7 regularly updates, most situations can be rectified by insitu methods such as structural soft felt lining.

Root Cutting & Root Damage The roots from trees and large shrubs often cause blockages and damage to pipes and drainage systems. If this problem is diagnosed [using CCTV to investigate] we use a turbine root cutter to remove fibrous matter and mass roots from the sewer. Once all of the roots have been removed, it may be possible to place a liner in the sewer to prevent the re-growth of the roots within the sewer. This eliminates the need to perform expensive excavation. Tree roots in sewer pipes cause damage and are the reason why many sewers backup. Roots can enter sewer pipes through cracks or loose joints. Over half of tree roots in the City's sewer system enter through defective private lateral sewer pipes.

What Causes Roots to Grow in Pipes?. Roots are attracted to water vapour that escapes through cracks or loose joints in sewer pipes. This means roots will move towards and penetrate through cracks, loose joints or any openings in sewer pipes. This happens even in the winter when trees appear to be dormant.

Once inside, roots will continue to grow and fill the pipe to create a root mass that can become matted with grease, paper and other solid matter. This is what eventually causes a clogged sewer. As roots continue to grow within a pipe, they begin to expand and exert pressure at their point of entry. This can result in a pipe rupture. A ruptured sewer pipe can be costly to fix or replace. Signs that a sewer is blocked include slow flowing drains, gurgling sounds from a toilet bowl and wet areas around washing machine floor drains. A pipe that is not cleared will become completely blocked and may rupture.

What Can Be Done to Combat the Tree Root Problem? The most common method to remove roots from sewer pipes is to use augers and saws augmented with commercial herbicides that kill roots. Do not, however, use copper sulphate and sodium hydroxide because although these chemicals kill roots, they do not prevent regrowth. They also damage the environment when they flow into our rivers. The most effective way to remove roots is by the use of High-pressure Water Jet and hydraulic root removing jetter nozzle. Once all roots have been removed the damaged pipe can be repaired by cipp liner. Drain 24/7 is approved installers and offers a cured-in-place, relining process. Our installers bring a high standard of quality, safety and integrity to the relining industry ( See Re-lining page) for the key benefits of relining.

We have the capability of lining pipes with diameters ranging from 75mm to 450mm, where excavation would be impractical due to location or depth. A range of lining options is available, to suit different applications. This includes both ambient and thermally cured systems. Damage to drains is typically caused by in-growing tree roots, voids created by broken pipes, and ground-water leaking into the pipe. drain 247 provides pipe lining to repair damaged drains without the cost and disruption of excavation.

 

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