Repairing Polyethylene (Poly) Pipe Leaks: Parts, Tools, and Better Alternatives

Identifying the Tubing

The black, rubbery tubing is polyethylene (poly) pipe, commonly used in drip and low-pressure zones. The green-striped section is a replacement piece. The coupling is an insert coupling (barbed on both ends) secured with stainless steel screw clamps.

Where to Buy

Take a sample to a local irrigation supply store. They'll match the diameter (typically 1/2" or 3/4" ID) and sell you pipe, insert couplings, and clamps. Cut with pruners or a tubing cutter.

Better Long-Term Fix

Since roots have repeatedly damaged this line and you're converting to lawn (requiring more flow/heads), run a new poly pipe along a root-free path. Old pipe may be pinched, reducing flow. A fresh run ensures reliable coverage for added sprinkler heads.

Sizing Note

Poly pipe is sized by inside diameter (ID). Measure the sample's ID or bring it to the supplier. Common sizes: 1/2", 3/4", 1".