Drain lining involves lining the inside of the drain with a polymer liner thar has been "wet out" and soaked into an resin solution made up of epoxy resin, accelerator and catylst. Basically liquid plastic, the resin is the main chemical base,
the catylyst catylises the chemical reaction,
and the accelerator accelerates the process as needed depending on the weather and temperature. The wet out liner is then wrapped round or pulled around (like a sock) an inflatable vessel or packer and pushed up the line to the location of the defect, there are multiple methods of doing this, and is inflated with a pump or compressor, as it is inflated to the diameter of the pipe it bonds to the original pipework. Lining only slightly reduces the diameter of the pipe by a few millimeters. After a period of time the liner hardens and creates a second pipe within the pipe reinforcing the structural integrity, once fully cured the packer/vessel is deflated and removed from the drain. We would then use our CCTV drain camera to review the quality of the install.
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