Most drainage systems are as old as the property, and some even older. With years of ground and traffic movement, this can cause drains to move. In some cases you get a small amount of displacement and this can be rectified by installing a liner. However, in other cases there is no alternative than to excavate and replace the pipe work.
Drainline carry out numerous sized excavations from replacing a kitchen gully to renewing all the drainage systems to the property. We have an excellent team of engineers who are all very experienced in completing these types of excavations.
We have carried out excavations to schools, pubs, restaurants, and hotels so we are very experienced with commercial properties as well as domestic.
We have public liability insurance of £10 million so you know you are in safe hands. All of our equipment is regularly checked and serviced.
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Interceptor traps were originally installed to prevent sewer air from venting within domestic systems at a time when the authorities were unsure of the health risks and dangers that this foul air may carry. Even at the time there were those who opposed the installation of the traps because they cause waste matter to sit in the outlet of a chamber until the next flush.
It was therefore left to individual authorities whether they specified the installation of traps or not, and for this reason they are common in certain parts of the UK on houses of a certain age, and not so common in others.
The initial thought was that the trap would prevent the foul air and rodents from leaving the sewer systems and surfacing within domestic curtilages and, to some degree, this may have been the case. However, the traps created their own problems partly because they were often installed on combined storm and foul drainage systems and, as a result, silt and debris would collect in the trap causing the occasional blockage.
If you are rodding or jetting a system and you come to a stop at the boundary line, this is usually the reason. You may have some success in feeding a jetting hose around the trap or the access shaft may let you plunge the trap clear of silt and debris.
Common defects found on interceptors include root ingress, fracturing due to movement or settlement of the chamber, and a general build up of silt, debris, grease, and fat within the trap itself.
If the traps are causing problems, we tend to remove and replace them with a straight section of pipe. This can be done by excavation or, if on the outlet of a chamber, it is possible to smash out the trap and install a small length of liner before making good the channel pipe and benching.