Drain Relining

Plumbing & Drainage Direct Ltd can reline most pipes by placing a new pipe within an existing damaged pipe without the expense and disruption of excavation. Re lining is suitable for sewers and vertical rainwater down pipes etc and is most commonly used on pipes that have suffered from cracking, breaking or general wear and tear.

The liner is impregnated with resins and then dragged into the damaged line. The liner is then inflated under pressure by a specialised calibration hose and is kept under pressure until the resins have cured and the liner has become solid. The calibration hose is then removed and the pipe has been sealed, reinforced and smoothed out to leave a water tight pipe.

One of most serious drainage problems, that affects ALL types of property, is the threat posed by leaking drains. Leaks can occur for many different reasons, the most common being when drains become cracked or broken as a result of general deterioration or tree roots infiltrating the drain. Over time the water that leaks from the pipe will wash away soil from around the pipe and surrounding area, resulting in a void or area of soft ground around the pipe. If this drain is near or under a property, as they commonly are, then this will frequently result in subsidence, leaking drains being recognised as the cause of up to 40% of property subsidence cases. There are many tell-tale signs of subsidence, including; cracks evident in brickwork and window sills; sunken steps or paving; and cracking of drive-ways or paths. However, although these problems are evident in numerous properties around the country, few people are aware that it’s leaking drains that are causing the problem. Therefore, with such cases it is of paramount importance that the problem is identified and the offending drain repaired as quickly as possible, as repairing a leaking drain is usually far cheaper than repairing subsidence!

A 10 year guarantee is given with all our work, this process is accepted by local authorities, loss adjusters, surveyors, civil engineers and architects.

The GRP liner pipe is manufactured from a special dense impermeable felt and is designed and tailored to fit exactly the internal dimension of the pipe to be refurbished. The thickness of the liner material can be varied according to design specifications required. A special resin containing an activating catalyst is impregnated into the liner pipe prior to installation.

The lining is suitable for sewers, culverts, vertical rain water down pipes etc. It can also be used to seal tanks, chambers and manholes etc. GRP lining is resistant to most aggressive chemicals and can withstand extremely high temperatures. The customer will benefit from the lining repair process in many ways.