Mainline Plumbing Co.Plumbing & heating, done right
(555) 013-2600
Mainline
Call (555) 013-2600

Emergency line open 24/7. Standard hours: Monday – Friday 7:30 – 18:00, Saturday 8:00 – 14:00, Sunday Emergency call-outs only.

Case studies

The proof is in the pipework.

6 recent jobs, each with a before/after comparison you can drag (or arrow-key) across, what we found on arrival, what we did about it, and how long it took.

Case study results

Corroded galvanized steel pipe section with rust scale and a weeping joint, before replacementNew red and blue PEX pipe runs neatly clipped in parallel rows after the repipeBeforeAfter
Old Town3 days

Whole-house repipe, 1930s semi

Rusty, low-pressure galvanized lines replaced with PEX over three days — water back on every evening.

What we found
Galvanized steel lines choked to a pencil-width flow, with two weeping joints inside a bathroom wall.
What we did
Rerouted hot and cold runs in PEX-A through the loft, added isolation valves per room, pressure-tested to 8 bar.
Scope
Whole house
Old scaled hot water cylinder with corroded pipework before removalNew wall-mounted tankless water heater with clean valved pipework after installationBeforeAfter
Harbourview1 day

Tankless water heater upgrade

A family of five trading a tired 135-litre tank for a right-sized tankless unit with endless hot water.

What we found
A 14-year-old cylinder with a failed element, heavy scale, and a recovery time that could not keep up with mornings.
What we did
Fitted a condensing tankless unit, upsized the gas run, added service valves for easy annual flushing.
Scope
Plant room
Camera view of a clay sewer pipe with tree roots entering through a joint before reliningCamera view of the same sewer after relining, showing a smooth continuous boreBeforeAfter
Millfield2 days

Trenchless sewer reline

Root-invaded clay sewer restored from inside — no trench through the garden.

What we found
Camera survey showed root ingress at four joints and a cracked section under the patio.
What we did
Jetted and milled the roots, then installed a 12-metre cured-in-place liner; final camera pass verified a smooth bore.
Scope
12 m sewer run
Bare stud wall and floorboards with first-fix pipework marked out before the ensuite buildFinished walk-in shower with rainfall head and thermostatic controls after plumbing completionBeforeAfter
Canalside4 days

Ensuite remodel plumbing

Full rough-in and finish plumbing for a new walk-in shower ensuite carved from a box room.

What we found
The nearest waste stack was six metres away and the floor build-up allowed only a shallow-fall run.
What we did
Set new hot/cold supplies, a shallow-trap shower waste with correct fall, and a quiet thermostatic mixer; tiled-in finish.
Scope
New ensuite
Thermal image view of a warm patch on a tiled kitchen floor indicating a hidden hot water leakSingle opened floor tile with repaired copper pipe section before re-layingBeforeAfter
Westbrook1 day

Hidden slab leak found fast

Warm floor patch and a spinning meter traced to a hot-line pinhole under the slab — one tile opened, not the kitchen.

What we found
Acoustic tracing and thermal imaging pinpointed the leak within 30 cm; meter test confirmed an 11 litre/hour loss.
What we did
Opened a single tile, repaired the copper section, re-tested, and re-laid the floor finish the same day.
Scope
Kitchen slab
Grease-scaled commercial kitchen drain line narrowed to half its bore before jettingClean jetted drain line and newly fitted grease trap pipework after the overhaulBeforeAfter
Old Town1 evening + plan

Bistro kitchen drain overhaul

A restaurant's weekly backups solved with jetting, a grease-management refit, and a maintenance plan.

What we found
40 metres of line scaled to half bore with grease; the undersized trap was bypassed by a later alteration.
What we did
Jetted and descaled the run, fitted a correctly sized grease trap, and set a quarterly jetting schedule.
Scope
Commercial kitchen

Showing 6 of 6 case studies.

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