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A Giant Plumbing team member works at the box gutter edge of a commercial roof at sunrise, air conditioning units and solar panels beside him

Re-roofing and roof plumbing in Melbourne

We replace roofs, box gutters, flashings and skylights on commercial, industrial and residential buildings, with Working at Heights accreditation and our own scissor lift.

Contact 1300 159 857

Our roofing services

New metal roof sheets laid over safety mesh and purlins on a large industrial roof, a steel structure rising behind

Commercial and industrial

  • Re-roofs and roof replacement

    Factories, warehouses, offices, shopping centres, schools and government facilities: rusted, leaking and worn-out roofs stripped and replaced with new metal sheeting, insulation blanket, safety mesh, flashings, cappings and box gutters.

  • Metal roofs
    The ridge of a new white metal roof with a flashed vent, an industrial building beyond

    New and replacement sheeting in corrugated, concealed-fix and pierced-fix profiles on low-pitch and gable roofs, and repairs to rusted sheets, opened laps and loose or failed fixings.

  • Box gutters, flashings and cappings
    A Giant Plumbing team member carries a long new box gutter section along a metal roof

    Rusted, overflowing and ponding box gutters and leaking joints, sumps, outlets, rainheads and overflows, and ridge and barge cappings, apron flashings and parapet flashings.

  • Custom sheet-metal flashings
    The open ridge of a large shed roof ready for its capping, snips and rivets beside it

    Made to suit the roof: chimney, box and valley flashings, flashings around skylights, vents and roof plant, and head and reveal flashings where wall cladding meets windows and doors.

  • Skylight replacement
    A new white metal roof with a run of skylight sheeting on an industrial building, solar panels beyond

    Discoloured, cracked and leaking polycarbonate and fibreglass skylight sheets on factory, warehouse and commercial roofs, and the safety mesh and flashings around them.

  • Wall cladding

    Corroded and damaged cladding replaced, and walls re-clad in corrugated and standing seam profiles, with the corner, window and roof-junction flashings.

  • Roof leak repairs

    Leaks at box gutters, sumps and outlets, flashings and cappings, skylights, parapets, roof plant and exhaust penetrations, and rusted or lifted sheets, blocked box gutters, failed sealant and loose fixings.

A finished grey metal hip roof with two chimneys on an older Melbourne house, seen from the roof next door

Residential

  • Re-roofs
    New corrugated metal roof sheets laid down a hip on a house re-roof, the insulation edge showing

    Single and double-storey houses, terraces and townhouses: old, rusted and leaking roofs replaced with new metal sheeting, sarking and insulation, battens, ridge capping and flashings.

  • Tile-to-metal roof conversions

    Concrete and terracotta tile roofs replaced with a metal roof, including new battens, sarking and insulation, ridge and hip capping, valleys, and flashings around chimneys, skylights and flues.

  • Gutters and downpipes

    Rusted, sagging, leaking and overflowing eaves gutters, gutters that are undersized or have the wrong fall, new downpipes and rainheads, and box gutters on terraces and double-storey houses.

  • Roof leak repairs

    Leaks at flashings, valleys, box gutters, skylights, chimneys, roof screws, vents and pipe penetrations, along with lifted flashings, failed sealant and damaged sarking.

Why choose Giant for roofing

  • Licensed for roofing and drainage

    Roofing (stormwater) and drainage are both classes on our plumbing licence, so we handle the roof and the stormwater that runs off it in the one job.

  • Finding where the water gets in

    We trace the leak to the box gutter, flashing or sheeting it comes from, and check the rest of the roof for anything else likely to leak.

  • Planned around a building in use

    We plan re-roofs with you before we start and, where the site needs it, schedule the work outside normal hours to keep disruption down.

A Giant Plumbing roofer in a branded hi-vis vest screws down new roof sheets on top of a high-rise building
Two Giant Plumbing team members talking beside the work vehicles

Our process

  1. Enquiry

    You send through the details of the job or call the office.

  2. Site visit

    We attend site and scope the work in person.

  3. Written quote

    You get a written quote for the work.

  4. Scheduling

    We book the work around your operating hours, your inductions and your access requirements.

  5. Completion

    We hand over with compliance certificates where required.

Get in touch

Before we start on site

  • Certificates of currency
  • Safe work method statements (SWMS)
  • Site inductions
  • Compliance certificates on completion
Giant Plumbing team members at the open tool canopies of three branded utes at the Coburg North yard

Work with Giant Plumbing

If you’re looking for an experienced contractor to support your commercial, industrial or government plumbing requirements, tell us about your project below. Our team will review the details and get in touch to discuss how Giant Plumbing can assist.

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We get back to written enquiries within 24 hours. For a quicker answer, call 1300 159 857.

Frequently asked questions

Can you fix an overflowing box gutter?

We repair or replace the box gutter, and clear or repair the downpipes and stormwater drains it runs into.

Can you repair a leak without re-roofing?

Where the roof itself is sound, we repair the leak on its own. Where the sheeting has failed, we quote the replacement before any work starts.

Can you replace skylights on their own?

We replace skylights and skylight sheeting on their own, or as part of a re-roof.

Do you replace tiled roofs with metal?

Yes. We carry out tile-to-metal roof conversions on homes across Melbourne, and replace the gutters and downpipes in the same job where they need it.

Do you take on roofing for builders?

We carry out re-roofs and roof plumbing for builders on larger projects, and for facility managers, owners and homeowners.

Service area

We work on roofs across greater Melbourne from our base in Coburg North, and travel Victoria-wide for some clients.

Address
56 Trade Place, Coburg North VIC 3058
Hours
Monday to Friday, 7am to 5pm
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Map of greater Melbourne and Port Phillip Bay. Greater Melbourne, our service area, is shaded deep green inside a bold border; our base in Coburg North is marked.
  • Greater Melbourne, our service area
  • Victoria-wide for some clients

Our other services

Giant Plumbing technician using a drain inspection camera on a footpath

Plumbing

Commercial and industrial maintenance, drainage and underground services, CCTV and jetting, backflow testing and certification, leak detection, water filtration and gasfitting.

Giant Plumbing excavation equipment at a work site

Excavation

Trenching, drainage and stormwater, sewer and site cuts with our own 8 t, 3.5 t and 1.5 t excavators and tip truck. Tight access, demolition and spoil removal.

Giant Plumbing technician investigating a leak beside red fire hydrant pipework

Burst Fire Services

Repairs to underground fire service mains, isolation valves, hydrant branches, hydrants, booster assemblies and fire service backflow devices.

Giant Plumbing work utes lined up at the yard

Get in contact

Speak with our team to discuss a re-roof, box gutters and flashings, skylight replacement or a roof leak.

Contact 1300 159 857