Rooftop Waterproofing Sydney
Is your building experiencing roof leaks or signs of failed rooftop waterproofing?
We help building owners repair rooftop waterproofing defects properly so the problems don’t return.
We can help you with:
- Leaking rooftops and failed membranes
- Roof membrane replacement works
- Water ingress through roof penetrations and flashings
- Rooftop waterproofing upgrades
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Why Rooftop Waterproofing Repairs Often Fail
Rooftop waterproofing failures often occur when membranes deteriorate over time or when roof detailing has not been installed correctly.
Water can penetrate through roof penetrations, flashings and junctions where waterproofing systems have failed or reached the end of their service life.
Long-lasting rooftop waterproofing requires correct preparation, engineered waterproofing systems and experienced installation.
That’s where a rooftop waterproofing specialist makes the difference.
Proper rooftop waterproofing repairs usually involve:
- Identifying the source of water ingress
- Removing failed waterproofing membranes
- Preparing substrates and falls correctly
- Installing engineered waterproofing systems
- Detailing penetrations and junctions correctly
Need help understanding what your building needs?
Schedule a Project Desktop Review.
Ben Tran
Class 2 Registered Building Practitioner – NSW
Builder Licence No: 360636C
Building Practitioner No: BUP0004317
Trusted by Leading Strata Managers and Engineers
Types of Rooftop Waterproofing Services
Rooftop waterproofing works delivered across residential and commercial buildings.
Roof Membrane Replacement
Failed roof membranes removed and replaced with engineered waterproofing systems suitable for exposed rooftop conditions.
Roof Flashing Upgrades
Roof flashings repaired or upgraded to prevent water ingress at critical roof junctions and interfaces.
Roof Penetration Waterproofing
Waterproofing upgraded around service penetrations including pipes, ducts and mechanical equipment.
Concrete Roof Waterproofing
Concrete roof slabs prepared and waterproofed including crack repairs and installation of engineered membrane systems.
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Roof drainage upgraded to reduce ponding and improve long-term waterproofing performance.
Roof Drainage Improvements
Roof Joint Waterproofing
Movement joints and construction joints sealed and waterproofed to prevent water ingress through roof interfaces.
Rooftop Waterproofing Project Experience
We deliver rooftop waterproofing projects across residential and commercial buildings throughout Sydney.
Structural Concrete Remediation
Slab deterioration and reinforcement exposure identified beneath occupied residential levels.
Delivered staged demolition, temporary structural support and engineered reinstatement within a live Class 2 building.
- Lamb & Walters Strata Management
Rooftop Waterproofing Remediation
Widespread membrane failure and ongoing water ingress across an occupied Class 2 residential building.
Delivered staged removal of waterproofing, substrate repairs and installation of new sheet membranes.
- Professional Strata Management
Façade & Waterproofing Upgrade
Façade deterioration and waterproofing failure within a high-density Class 2 residential building.
Delivered staged remediation under live-site conditions, coordinating façade works and waterproofing upgrades while maintaining occupancy.
- Jamesons Strata Management
Trusted by Property Owners Across Sydney
Frequently Asked Questions
What do rooftop waterproofing services involve?
Rooftop waterproofing services involve repairing failed waterproofing membranes and stopping water ingress where leaks have developed.
Works typically include:
• Membrane replacement
• Flashing upgrades
• Roof penetration waterproofing
• Concrete roof waterproofing
• Drainage improvements
All works are carried out in accordance with specifications.
How much does rooftop waterproofing cost in Sydney?
Rooftop waterproofing costs vary depending on the size of the roof, access requirements and the extent of waterproofing failure.
Projects typically range from approximately $20,000 to $2 million, with accurate pricing based on site inspections or engineer-prepared specifications.
How long does rooftop waterproofing take?
Timeframes depend on the size of the roof and the extent of works required.
Smaller waterproofing projects may take several weeks while larger membrane replacement projects can take several months.
A construction program is usually prepared before works begin so building owners understand the staging and expected duration.
What is the impact on residents and tenants?
Most rooftop waterproofing works are carried out with minimal disruption to residents or tenants.
Access to rooftop areas will usually be restricted during waterproofing works.
What types of rooftop waterproofing projects do you typically undertake?
We deliver rooftop waterproofing projects ranging from targeted leak repairs through to full membrane replacement works.
Typical projects include roof membrane replacement, flashing upgrades and drainage improvements.
Are you a registered building practitioner for Class 2 buildings?
Yes. Atomic Projects is a Class 2 Registered Building Practitioner in NSW, which means we are authorised to carry out regulated building work on Class 2 residential buildings.
For strata apartment building projects, works are delivered in accordance with the Design and Building Practitioners Act and declared designs where required.
Class 2 Registered Building Practitioner (NSW)
Builder Licence No. 360636C
Building Practitioner Registration No. BUP0004317