A patch repair is a short length liner, used to repair isolated defects within longer pipe lengths.
We offer patch repairs in using the traditional ambient cured method or the faster UV Cured method or large scale projects. The section of patch repair liner is attached to a packer and winched into place within the pipeline. The packer is then inflated to form a tight bond between the patch and the pipe wall where the localised damage is located and left in place to cure. Once cured, the packer is deflated and withdrawn from the pipe, leaving the smooth, structural patch securely in place. Localised patch drain repairs smooth over displaced joints, seal cracks and holes reducing the resistance caused by such defects. The net effect of the patch is to increase the flow of solids and liquids which in turn helps to prevent future blockages in a problem drain. Patch length usually 1000 mm to 1500 mm and a suitable for diameter ranges 100 to 1200mm.
If there are multiple defects in a pipe, a judgement needs to be made as to whether multiple patches or a full length liner is appropriate. The decision is normally made by balancing the relevant costs and the probability of further degradation of areas which would not be repaired by patching.