Gully Trap Repairs Auckland

The gully trap is the small grated dish outside your kitchen, laundry or bathroom wall where waste pipes drop into the drain. It does two jobs. Its water seal stops sewer gas coming back up, and its rim is the planned overflow point for the whole house, so if the drain downstream blocks, wastewater spills outside on the lawn instead of up through your shower.

Cheeky's Plumbers repairs, replaces and raises gully traps across Auckland. Our certifying drainlayers fix the trap itself, check the drain behind it, and set the new rim at the height the Building Code expects, so it keeps protecting the house.

Pricing: quotes are free, and every job gets a fixed price before we start, so there are no surprises on the invoice.

Gully Trap Repairs Jobs We Handle Across Auckland

• Overflowing gully trap
• Gully trap replacement
• Raise gully trap
• Cracked gully trap repair
• Smelly gully trap
• Overflow relief gully installation

Signs your gully trap needs attention

Some faults are obvious, others show up in heavy rain or when the washing machine pumps out. Book a check if you notice any of these: If the gully overflows because the line beyond it is blocked, that is a blocked drain job rather than a gully repair.

• Water or toilet paper sitting in the dish, or spilling over the rim
• A sewer smell near the laundry or kitchen wall, especially on warm days
• Cracks in the concrete surround or the dish itself
• The rim level with, or below, the lawn, garden bed or paving
• Rainwater pooling around the grate after a storm
• A missing, broken or concreted-over grate

Why gully traps overflow, crack and smell

An overflowing gully trap is a warning, not the fault itself. Usually the drain past the trap is choked by tree roots, fat or a collapsed earthenware section, and the trap is simply doing its job as the release point. If yours keeps overflowing, we clear it and then run a CCTV drain inspection so you know what is causing it.

Smells usually mean the water seal has dried out, cracked or been bypassed. A trap that only gets a trickle, such as one serving a spare basin, can lose its seal in a dry summer. Cracking comes from settlement, tree roots lifting the surround, and the clay soils across much of Auckland that swell in winter and shrink in summer. On older villas and bungalows in suburbs like Grey Lynn, Mt Albert and Devonport, the original earthenware traps are often 80 or more years old and simply worn out.

How It Works

Gully trap height and the overflow relief gully rules

When a gully is used as the overflow relief point (often called an ORG), its height matters. Under NZ Building Code clause G13 guidance, the overflow rim must sit at least 150 mm below the overflow level of the lowest fixture it protects, such as a shower tray or floor waste. BRANZ guidance adds that the rim of the gully dish should be at least 25 mm above a paved surface and 100 mm above an unpaved one, so surface water cannot run in. The grate also needs to lift freely when the drain surcharges.

Raised gardens, new paving and topsoil build-up often leave older gullies sitting too low. Watercare asks Auckland homeowners to keep gully traps raised off the ground and covered by a grate, because rain getting in overloads the wastewater network and contributes to overflows. If a roof downpipe still drains into your gully, it should be moved to the stormwater system, and our stormwater drains team can do that at the same visit.

What we do: clear, repair, raise or replace

Most gully jobs fall into one of four fixes. We clear blocked traps with a drain machine or jetter. We patch or rebuild a cracked surround. We raise a low gully using a riser or a new dish set at the correct height, regrading the paving around it so water falls away. Or, where the trap is broken below ground, we dig it out and fit a new PVC gully trap with a fresh connection to the drain.

If the drain behind the gully is cracked or full of roots, clearing the trap alone will not last. In that case we show you the camera footage and quote for drain repairs, so you can decide with the facts in front of you.

Gully trap repair cost

The final price depends on what we find: whether the trap needs raising, rebuilding or full replacement, how deep it sits, whether it is under a deck or concrete that has to be cut, and whether the drain beyond it needs work. You get a fixed price before we start.

Common Auckland gully trap problems

Older state houses and bungalows often have the gully tucked hard against the weatherboards, sometimes buried under decades of garden. 1970s brick and tile homes tend to have concrete paths poured up to the rim. Newer townhouses in places like Hobsonville and Flat Bush often have gullies boxed in by decks or fences, which BRANZ notes still need clear access above the trap. We work around all of these and leave the gully where it can be seen, cleaned and reached.

Why Choose Cheeky's Plumbers for Gully Trap Repairs

Gully Trap Repairs FAQs

Gully Trap Repairs Across Auckland

Our gully trap repairs team works in every Auckland suburb. Find your local plumbers:

Gully Trap Repairs Guides

• What Is a Gully Trap? Overflows, Smells and How to Fix Them

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