Plumbing | Drainage | Gas | Civil connections

Brisbane plumbers specialising in civil connections & tight‑access work.

Licensed plumbing, drainage and gas for homes and commercial sites — from a dripping tap to a live sewer connection. We do it all, but we’re at our best on the challenging jobs, where a small, experienced crew needs to solve and coordinate it through to the finish.

Precision under pressure.

Request a quote 0415 966 486

QBCC 15268508
Gas licence 020934 — LPG & NG
Authorities Urban Utilities & SEQ Water

Invertex worker in full PPE inside a deep shored excavation pit — Deep shored excavation

Precision in execution
Integrity in every detail
Safety always
Solutions that last

01 — Our specialty

Civil plumbing connections across Brisbane

Sewer, water and stormwater connections for builders, developers, engineers and civil contractors — live connections, manholes, PE welding and tight-access work, built to drawings and to Urban Utilities, SEQ Water and council requirements.

Sewer

Sewer mains & reticulation
Manholes & risers
Property service connections
Inspection openings
Upgrades to existing networks

Water

Water mains & connections
Live connections to existing networks
PE electrofusion & butt welding
Larger-diameter pipework
Subdivision reticulation

Stormwater

Stormwater drainage & pipework
Pits & connections
Lawful point of discharge works
Drainage for subdivisions & sites
Upgrades & replacements

Working with Urban Utilities SEQ Water Local councils Engineers & surveyors

02 — Where we shine

The jobs that need a bit more thinking

Tight access, existing services, tricky ground and authority requirements — the work where how it’s done matters as much as what goes in.

Deep excavations

Shored trenches and deep pits, excavated and supported safely.

Live services

Connections to and works around live sewer and water networks.

Authority connections

Delivered to Urban Utilities, SEQ Water and council requirements.

Manholes

Setting, connection and risers to line, level and specification.

Larger pipework

Larger-diameter pipe and PE welded fittings for mains work.

Confined & tight access

Particular capability in restricted and challenging construction environments.

Road works

Works within and across roadways, coordinated with the site.

Dewatering

Managing groundwater to keep excavations workable.

Machinery

Excavation and plant operated directly by our team.

Testing & compliance

Testing and documentation through to final sign-off.

03 — Plumbing & gas

Yes, we’re plumbers — for the everyday jobs too

Licensed plumbing, drainage and gasfitting for homes, builders and businesses across Brisbane and South East Queensland. Same crew, same standard, whatever the size of the job.

Residential plumbing

Taps, toilets, leaks, blocked drains and general maintenance.

New builds & renovations

Rough-in to fit-off for new homes, extensions, kitchens and bathrooms.

High-end custom homes

Careful, well-coordinated plumbing for architectural and custom builds.

Commercial

Restaurants, salons, commercial kitchens, tenancy fit-outs and commercial sites.

Gas fitting

LPG and natural gas installs, meter manifolds, appliances and testing — Full Gas Licence 020934.

Hot water

Hot water system installation, repair and maintenance.

Copper multi-meter gas manifold on an external wall — Multi-meter gas manifold

Gas meter manifold undergoing a pressure test — Gas pressure test

Commercial emergency gas shut-off valve installation — Commercial gas shut-off

Commercial kitchen fit-out with grated floor drain — Commercial kitchen drainage

Invertex team member in PPE working in a deep shored pit

04 — The Invertex difference

A small, experienced crew — with the director on site

We’re a small, dedicated team, and we like it that way. The same experienced people plan the job, dig it, build it and see it through to the finish — led on site by our Director and Principal Plumber, not from behind a desk.

Small, dedicated crew
Experienced people who know each other’s work and stay with the job from start to finish.
Reads the drawings
Plans the job properly before a bucket hits the ground.
Coordinates through to the finish
Works directly with builders, engineers, surveyors and authorities to sort issues on the spot.
On the tools & the machinery
Hands-on with excavation, installation and testing — ensuring the work is built correctly.

05 — On site

Recent site work

A selection of photos from Invertex sites across South East Queensland.

New concrete manhole installed at a residential site, with surrounding excavation and services — New manhole — residential site

Y-junction sewer connection in a shored trench — Sewer Y-junction connection

Drainage pits and pipework installed in a tight-access excavation between buildings — Tight-access drainage pits

Excavator working beside a building with new pits installed — Pit installation beside a building

Team assembling blue ductile iron valve fittings for a water main — Ductile iron valve assembly

Water meter and backflow prevention assembly with blue valves — Water meter & backflow assembly

Manhole riser being set in position — Manhole riser installation

PE electrofusion welded fittings at a live connection — PE electrofusion fittings

Commercial site with excavator and vacuum truck — Commercial site works

Long sewer trench at a residential site — Residential sewer trench

06 — About

Just plumbers — who like a challenge

Invertex is a licensed plumbing contractor specialising in civil hydraulic and connection work — sewer, water and stormwater — throughout Greater Brisbane. We particularly enjoy technically demanding projects where access, existing services, ground conditions and authority requirements make execution just as important as installation.

Led by Director and Principal Plumber Cassidy Gerrard, Invertex takes a hands-on approach from planning through to excavation, installation, testing and final sign-off. The person responsible for the project isn’t sitting behind a desk — he’s involved on site, solving problems and ensuring the work is built correctly.

Our experience spans civil plumbing, drainage, sewer and water infrastructure, stormwater systems, gas and complex hydraulic works, with particular capability in tight-access and challenging construction environments.

We deliberately stay a small, focused crew. That allows us to take on complicated work, maintain direct oversight and deliver the level of workmanship expected when there’s little room for error.