Commercial roof replacement in Brisbane
Commercial roof replacement means re-sheeting or replacing the roof of a warehouse, factory, shop, office, school building or strata complex. Roof Replacement Brisbane arranges commercial roof replacement through independent local roofing contractors across Greater Brisbane. The contractor surveys the roof, reviews any asbestos register, and gives the owner or manager a written scope with a staging plan.
Why commercial jobs are different
Commercial roofs are often low-pitched with long sheet runs, box gutters, skylights and rooftop plant. They sit over people working, customers shopping, stock and machinery. Before any sheet is lifted, the plan needs to answer:
- Which sections are opened each day, and how are they made watertight by evening?
- How are people kept clear of the work area below and around the building?
- Where do cranes, skips and deliveries go without blocking access?
- Which work needs to happen outside trading hours?
Common problems on Brisbane commercial roofs
- Corroded sheets and fixings, particularly near industrial exhausts or the river and bay
- Box gutters and sumps that overflow in heavy storms, sending water into the building
- Brittle, discoloured skylight sheets letting in water and heat
- Old asbestos cement roofing on buildings from before 1990
- Unsafe roof access, missing anchor points and walkways
How the job runs
- Survey. The contractor inspects the roof, gutters and penetrations and reviews the asbestos register.
- Scope and program. A written scope with sections, sequencing and safety measures.
- Approvals. The owner, body corporate and certifier sign off as needed.
- Staged replacement. Sheets are replaced bay by bay, with each section sealed before the crew leaves.
- Completion. Gutters cleaned, swarf removed, safety systems tested, and documentation handed over.
For the residential version of this sequence, see the roof replacement process, step by step.
Getting water off a big roof
Brisbane storms can drop a lot of rain in a short time, and large flat roofs collect it fast. Box gutters, sumps and downpipes need enough capacity and overflow paths so water spills outside, not into the building. A roof replacement is the right time to check them. See gutter and downpipe replacement.
Safety and compliance
Roof work is high-risk construction work. Contractors should provide safe work method statements, and roof edges need protection. Asbestos removal is regulated by Workplace Health and Safety Queensland. Roofing contractors are licensed by the QBCC.
We ask the contractors we work with to hold the licences and insurance the job needs. Ask to see them, along with safety documentation, before work starts.
Planning ahead
Commercial roofs rarely fail all at once. Corrosion spreads from cut edges, laps and fixings over years, and skylight sheets go brittle gradually. A roof condition survey every few years lets an owner budget for replacement in stages, bay by bay, rather than reacting to a flood through the ceiling during the first big storm of the season.
Strata and multi-unit roofs
For townhouse and apartment complexes, the body corporate typically arranges the roof work. A clear scope helps committees compare quotes like for like, and a staging plan helps residents know what to expect. Our guide to roof replacement quotes explains what to compare. To arrange a site inspection, call or use the form below.