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Waterproofing service

Commercial Waterproofing in Sydney

Commercial and strata waterproofing contractor for builders, developers and facility managers — new construction and remedial works across Sydney.

  • Licensed & insured
  • AS 3740 / AS 4654 compliant
  • Written workmanship warranty
Commercial waterproofing works in progress on a multi-level building

Free site inspection

Fixed-price written quote

Commercial projects need a waterproofing subcontractor who shows up on program, documents every stage and understands the consequences of failure on a multi-storey building. We support builders, developers, strata managers and facility managers across Greater Sydney.

From apartment wet areas and balconies on new construction to remedial roof, podium and car park works, we deliver compliant systems with the paperwork to match.

Signs you need commercial waterproofing

  • Defect reports identifying water ingress
  • Recurring leaks into tenancies or common areas
  • Failed podium, roof or car park membranes
  • Balcony leaks across multiple apartments
  • Upcoming new-build program requiring a waterproofing trade
  • Insurance or compliance documentation required

Waterproofing services for commercial clients

  • New construction wet areas, balconies, podiums and roofs
  • Remedial waterproofing for strata and body corporate buildings
  • Below-ground, car park and lift pit waterproofing
  • Planter boxes and landscaped podiums
  • Expansion and movement joint sealing
  • Maintenance inspections and condition reports

Documentation and compliance

We provide SWMS, insurances, product data sheets and inspection and test plans (ITPs) on request, along with stage photos and compliance certificates on completion. For Class 2 residential apartment buildings in NSW we work with the registered practitioners involved to support the compliance requirements under the Design and Building Practitioners Act 2020.

Working in occupied buildings

Remedial works in strata and commercial buildings must minimise disruption. We plan staged works, protect common areas, communicate clearly with residents and building managers and keep sites clean and safe.

For builders

Send us your drawings or schedule and we will price by area or by unit, with a program that fits your trades. Visit our builders and strata page to learn more about working with us.

Our commercial waterproofing process

  1. 1

    Scope & pricing

    We review plans, specifications or defect reports and provide an itemised price and program.

  2. 2

    Pre-start

    SWMS, insurances and product data are submitted; inspection points agreed.

  3. 3

    Installation

    Works proceed in stages with hold points and photo records.

  4. 4

    Testing

    Flood tests and inspections are completed and signed off.

  5. 5

    Handover

    Certificates, warranties and as-built photos are provided for your records.

Why choose us for commercial waterproofing

Reliable subcontractor for builders and developers

Strata-friendly remedial programs

SWMS, ITPs and full documentation

Stage photos and compliance certificates

Competitive per-unit or per-area pricing

Licensed and fully insured

Recent project photos

Commercial Waterproofing FAQs

Yes. We provide SWMS, public liability and workers compensation certificates and product data sheets before starting on site.

Absolutely. Send your drawings, finishes schedule or scope and we will return an itemised price and proposed program.

Yes. We plan staged works, communicate with residents and building managers, and protect common property.

We service Greater Sydney, with a focus on Western Sydney, Parramatta, the Hills and surrounding regions.

Stop leaks before they become costly repairs.

Book a free, no-obligation inspection with Sydney’s waterproofing and painting specialists.