What is CIPR?
CIPR offers robust, long-lasting, and adaptable solutions for broken pipes and sewer lines. CIPR liners are flexible tubes coated with silicate resin which, when cured, form an impermeable bond between the liner and the host pipe wall. They are typically used to rehabilitate long stretches of pipe but, as the name implies, patch repair is a targeted approach. Our technicians use a small patch of liner to address localised pipe damage – such as root ingress. The edges of the liner patch are tapered to ensure a smooth flow transition.
McAllister offers CIPR in two varieties – traditional ambient-cured and UV-cured. Both offer strong, long-lasting repairs, but UV-curing is faster and more versatile. Our CIPR patch repair teams can deliver full structural repair bonding using either method – even in wet pipelines. They can also repair non-circular pipes, such as egg and box-shaped lines.
CIPP resists abrasion and chemical damage, providing a solid surface that improves flow. It is typically used to:
defend against root and water ingress by restoring structural integrity.
smooth over seal cracks, joint and holes.
improve the flow of solids and liquids.
Our approach to CIPP requires:
a 100 mm – 1800 mm pipe diameter.
an area where our technicians can prepare their materials.
safe access to the appropriate chamber.
a relatively straight access to the damage.
access for CCTV surveys before and after the repair work.
2-4 hours of site access.
CIPR is not always the right solution – some damage is serious enough to warrant installing a full length liner. Our technicians and engineers can help you decide which approach to take, with full consideration to your budget and the requirements of your operations. Talk to us about restoring your pipes through CIPR today.
McAllister’s approach to CIPR
McAllister is the industry leader in trenchless technology, and our CIPR process does not require excavation. We use a host of specialised equipment to access, inspect, and repair your pipes remotely.
Our technicians begin by conducting a CCTV survey to assess the damage. They then prepare a short CIPR sleeve, customised to repair the damage. These patches are usually 0.5–1 meter long, although they can be up to 3 metres in length.
The sleeve is wrapped around an inflatable “packer”, which will travel through the pipe to the site of the damage. Once in place, our technicians inflate the packer, which pushes the sleeve against the wall of the host pipe. The resin is infused in the sleeve’s and exterior bonds with the host pipe to create an airtight and watertight bond. Most patch repair use ambient-cured CIPR, and the packer is designed to allow air to flow around the patch. We also have equipment to aid heat-cured and UV-cured CIPR patches.
Once the sleeve is cured, the technicians deflate the packer and remove it from the pipe. They conduct a final CCTV survey to assess the repair’s success and record the new condition of the pipe.
McAllister has built a close working relationship with Trelleborg, manufacturers of the industry-leading EPROS® system. The result? Our clients enjoy shorter lead times, better service, and comprehensive technical support. Trelleborg’s EPROS® system has passed the demanding WRc, short-term hydrostatic testing procedure – which means it can withstand extreme conditions far beyond those expected in normal pipeline networks.
Only McAllister offers the industry’s best materials and high level of customer service. Talk to us today and discover how we go above and beyond, below.