Start with the right scope.
Commercial waterproofing in Sydney starts with the building risk: where water is entering, what sits below the affected area and how the repair can be completed without creating unnecessary disruption.
The scope may involve roofs, podiums, balconies, wet areas, planter boxes or below-ground structures. Each location needs its own assessment of the substrate, drainage, movement joints, terminations and exposure before a membrane system is selected.
For builders, strata managers and facility teams, we also plan access, staging, curing windows and handover documentation so the waterproofing work fits the wider building programme.
Where this work fits.
Commercial waterproofing is the broad category that ties roof membranes, balcony systems, wet area waterproofing, planter boxes, podiums, tanking and remediation into one coordinated building-envelope scope. It is especially relevant around Sydney CBD, Parramatta, Macquarie Park, Alexandria, Botany, Brookvale and the Inner West, where live commercial sites often have tenants, plant rooms, loading zones and staged access to work around.
How to choose the right option.
The common mistake is treating waterproofing as a product choice only. On Sydney commercial sites, access, substrate preparation, drainage, terminations and documentation usually decide whether the system performs.
Choose a contractor who can explain the system build-up, nominate hold points, photograph preparation and give you a simple handover pack.
What to send before we quote.
The fastest way to get useful advice is to send a clear brief. You do not need to diagnose the whole problem yourself, but you can help the contractor avoid guesswork.
- Send the site address and the best access point, especially for CBD, strata or industrial estates.
- Share photos of the affected area, the surrounding area, drains, cracks, thresholds, joints, stains and any previous repairs.
- Explain when the issue appears: after storms, during washdowns, after tenant use, or constantly.
- For epoxy flooring, describe forklift traffic, vehicle traffic, chemicals, washdowns, operating hours and shutdown windows.
- For waterproofing, note whether the area is internal, external, below-ground, exposed, tiled, trafficable or covered by other finishes.
- Tell us who needs documentation: builder, certifier, strata committee, facility manager, insurer or owner.
That information helps narrow the right starting scope. A roof leak may lead into roof and deck waterproofing, a strata issue may need strata remediation, and an industrial site may also need epoxy flooring, car park epoxy flooring or warehouse epoxy flooring as part of the same access plan.
Common questions about commercial waterproofing.
What does commercial waterproofing include?
It can include roof and deck membranes, balcony waterproofing, wet area waterproofing, planter boxes, retaining walls, lift pits, podiums and remedial membrane repairs.
How do I compare waterproofing quotes in Sydney?
Compare the preparation, membrane system, detailing, number of coats, curing time, access allowance, documentation and warranty language, not just the final price.
Can you work around active tenants?
Yes, many commercial and strata projects need staged access, noise planning and tidy daily handover so the site can keep operating.
Which standards matter most?
Internal wet areas are commonly assessed against AS 3740 and external above-ground membranes against AS 4654.2, depending on the exact scope.
Do you handle both new work and remediation?
Yes. New construction needs planned hold points, while remediation needs careful investigation before any membrane is replaced.
What information helps before a site visit?
Photos, plans, leak history, access notes, substrate type, drainage details and the site address help create a sharper first scope.
Ready to scope it?
Call Zac or send the job details. We will come back with a clear next step for your waterproofing or epoxy flooring project.