If you're back at the garden centre every spring buying another roll of drip tubing — patching splits, chasing pinhole leaks, replacing clogged emitters — the tubing isn't the victim of bad luck. The cheap stuff is built to fail in our climate. Here's what's actually going on, and what lasts.
Why does my drip line keep springing leaks?
Cheap unregulated drip tubing fails because it runs at full household pressure, bakes in UV, and splits in the freeze-thaw cycle. The lasting fix is a dedicated, pressure-regulated zone with pressure-compensating tubing built for in-ground GTA conditions.
Three forces gang up on disposable big-box tubing:
- Pressure. Drip is designed to run at low pressure. Hook thin tubing straight to an outdoor tap or a regular zone and it sees full household pressure — far more than it's rated for. Emitters blow, seams split, fittings pop.
- UV. Tubing left lying on top of the soil or mulch bakes in sunlight all summer, goes brittle, and cracks.
- Freeze-thaw. This is the GTA killer. Any water trapped in thin-walled tubing over winter freezes, expands and splits it — so you "discover" the failure the following spring, every spring.
What do "pressure-regulated" and "pressure-compensating" actually mean?
These two phrases are the whole difference between tubing that lasts and tubing that doesn't:
- Pressure-regulated means a regulator drops the incoming pressure down to what drip actually wants. The tubing and emitters then live within their rating instead of being hammered every cycle.
- Pressure-compensating means each emitter delivers an even flow from the first emitter to the last, even along a long run or up a slope. Without it, the near emitters drown and the far ones starve.
Proper in-ground drip tubing (we use a pressure-compensating product rated for burial) is also far thicker-walled than the throwaway rolls — which is most of why it survives our winters.
Why does drip belong on its own dedicated zone?
The single biggest upgrade isn't the tubing — it's giving drip its own zone, with its own regulator and filter, instead of teeing it off a spray zone or a tap adapter. A dedicated drip zone gets:
- The right pressure, set once at the zone, not whatever the spray heads happen to need.
- Filtration, so grit doesn't clog the emitters mid-season.
- Proper winterising with the rest of the system, so it isn't the thing that splits over the cold months.
Spray heads and drip emitters want completely different pressures and run times — sharing a zone shortchanges both.
What does PJL install — and what does it cost?
We build a dedicated, pressure-regulated drip zone with pressure-compensating tubing sized for your beds — the kind that goes in once and gets winterised every fall like the rest of the system. See the full approach on our drip irrigation page.
A drip zone is priced as an add-on and quoted to your beds; the structure is on our pricing page, so there's no guesswork. If you're also fighting splits or clogs on the existing setup, our sprinkler repair page covers that — or run it through the AI diagnostic tool first for the free-hour bonus if its diagnosis matches the fix.
Frequently asked questions
Why does my drip irrigation keep getting holes?
Almost always pressure and UV. Thin tubing run at full tap pressure stresses every seam and emitter, and sunlight makes exposed tubing brittle so it cracks. Add freeze-thaw over a GTA winter and you get fresh splits every spring.
Is pressure-compensating tubing worth it?
Yes, especially on longer runs or any slope. It delivers even water from the first emitter to the last, so plants at the end of the line get the same amount as the ones at the start. Cheaper non-compensating tubing waters unevenly.
Can drip lines be winterised?
A properly installed, dedicated drip zone is winterised right along with the rest of your system every fall — which is exactly why it survives. Tubing left charged with water over winter is what splits in the freeze-thaw.
Why put drip on its own zone?
Because drip and spray want different pressures and run times. A dedicated drip zone gets its own regulator and filter, the correct pressure, and proper winterising — none of which you get teeing drip off a spray zone or a tap adapter.