CIPP sewer repair & rehabilitation
UV Cured GRP Lining
The Waterflow Group has always been a company at the forefront of cured in place pipe (CIPP) for the repair and renovation of broken and defective drains and sewers. Recent developments in technology have produced a new and innovative method for cured in place pipe lining, the process is faster and the materials are stronger than standard, heat cured CIPP.
The process involves the use of UV light to cure the resin impregnated liner. Unlike conventional heat cured systems that rely on large quantities of water for installation, the UV cured liner is held in position simply by low air pressure during the very fast curing process.
This new pipe rehabilitation method offers significant advantages relating to quality, efficiency and environmental impact, these can be identified as:
- Pre-curing inspection by CCTV ensuring a high quality finish on every installation
- Cure time of 1 metre per minute can be achieved
- Lining can be undertaken during short night shifts
- Self contained and highly portable - enables linings to be installed in difficult and remote sites.
- Negligible styrene emissions.
- Minimal flow control required due to the speed of installation.
- Significantly exceeds all current material standards for strength and longevity.
- WRc APPROVED
Key features of the liners include:
- Factory impregnated and manufactured in accordance with BS EN ISO 9000 standards, the materials have been developed using technology employed in the aerospace industries. The materials and finished products have been rigorously tested and conforms to the requirements of BS EN 13566.
- Installations can be undertaken in pipe sizes from 150mm to 1200mm diameter. The liners can be manufactured to be installed in a variety of sewer shapes including egg and other non-circular profiles. Variations in the diameter of a sewer can also be accommodated.
- Factory manufactured liners designed specifically for your site under quality controlled conditions.
- Liners manufactured using high strength Advantex glass reinforcement and proven polyester resins that together offer a liner with very high strength characteristics and excellent chemical resistance.
Our in-house capabilities are extensive and this, combined with our innovative pipe and sewer rehabilitation techniques, enable us to tackle any aspect of drain or sewer maintenance, repair or renovation.
Pipe Reaming
Where pipes are displaced or partially collapsed, pipe reaming can be an effective no-dig solution for repair. Waterflow Plc provide a range of pipe reaming systems from miniaturised catch-pit / manhole based systems to HGV mounted units.
The operation is performed with a directional drilling machine and a reamer that grinds and pulverizes the existing pipe. The excess peripheral material is flushed and removed with the drilling fluids and the HDPE pipe of the required size pulled into place simultaneously.
This method avoids the ground heave and risk to other infrastructure associated with pipe bursting, making it a very effective technique in areas with significant services and structures above or near to the pipe being rehabilitated.
