Baillie Hill, East Victoria Park: Roof penetrations

Baillie Hill, East Victoria Park: Roof penetrations for mechanical exhaust system

Upgrading mechanical systems within an existing commercial facility requires precision, compliance, and careful integration with the existing structure.

At Baillie Hill in East Victoria Park, PBR Plumbing was engaged to deliver roof penetrations and waterproofing for a new ice machine room—supporting critical ventilation infrastructure.

Working within an operational hospitality and community precinct, we took a proactive approach to protect the building while preparing the site for new mechanical services.

Project scope

Blackoak Capital enquired with our team to deliver roof penetrations and weatherproofing solutions for a new mechanical exhaust system.

The project included:

• Installation of two custom roof upstands for ventilation systems
• Fabrication of Colorbond® upstands (200mm height)
• Installation of dry pan flashings to all penetrations
• Weatherproof flashing to maintain roof performance
• Preparation for exhaust fan and make-up air roof cowl

All works were completed on an existing metal roof, requiring careful detailing to maintain compliance and prevent future water ingress.

Accountable planning and delivery

Penetrating an existing roof system introduces risk if not handled correctly. From the outset, our focus was on preserving the roof’s integrity while ensuring all penetrations aligned with mechanical requirements.

Key considerations included:

• Roof integrity and waterproofing: Each penetration was sealed using compliant flashing systems to prevent leaks and long-term deterioration.
• Custom fabrication for precise fit: Upstands were manufactured to exact specifications (495 × 495 and 700 × 700), ensuring accurate alignment with incoming mechanical equipment.
• Integration with existing infrastructure: Works were coordinated to suit the building’s existing roof profile and structure.
• Safe and controlled delivery: Roof access and installation were planned to maintain safety and minimise disruption to site operations.

By addressing these factors early, we reduced risk at the source and supported a smoother process for all trades involved.

Results

We delivered compliant, fully sealed roof penetrations that prepared the site for mechanical services without compromising the building envelope.

Outcome highlights:

• Secure installation of two roof upstands for ventilation systems
• Fully weatherproofed penetrations with compliant flashing
• Roof structure protected against future leaks and water damage
• Site ready for exhaust fan and make-up air system installation

Client impact:

• Reduced risk of future leaks and reactive repairs
• Improved coordination with mechanical contractors
• Confidence in compliance with commercial roofing standards
• Lower long-term maintenance exposure through quality workmanship

Key deliverables

• 2 × custom Colorbond® upstands (200mm height)
• 495 × 495 exhaust fan upstand
• 700 × 700 make-up air roof cowl upstand
• Dry pan flashing for all penetrations
• Full flashing and waterproofing installation

Planning similar works?

We work proactively with our clients to ensure roof penetrations are done right from the outset—sealed, compliant, and built for long-term performance.

By managing both roofing and plumbing interfaces, we reduce risk, minimise future issues, and make coordination straightforward for your team.

If you’re planning mechanical upgrades, get in touch with our team to ensure your project is delivered properly the first time.