SPR™ lining occurs along a guide-frame constructed to mirror the pipeline’s shape. These shapes can be anything from a box, horseshoe, teardrop, arch etc. The SPR™ machine traverses the pipe while pulling PVC profile along to construct the trenchless pipe liner.
Once winding is completed, grout is introduced between the liner and host pipe. Grouting occurs in lifts through a series of ports installed within the liner. Once grouting is finished, the end result is a fully structural rehabilitated pipe.