St Patrick’s Chapel, DILWORTH SNR CAMPUS

Metal Warm Roof PROJECT Auckland

Complex Roofing Installation for an Architecturally Designed Chapel

The St Patrick's Chapel roofing project, located at Dilworth Senior Campus in Epsom, Auckland, features two steeply pitched planes of differing heights converging into a central gutter system.

Installed using a RoofLogic FibreTherm metal warm roof system, the roof delivers high-performance thermal efficiency, acoustic comfort, and long-term durability. Rainwater is managed via a custom stainless-steel rainhead connected to a soak hole at ground level, ensuring reliable drainage across the chapel’s complex roof geometry.

The roof’s tapered planes and staggered purlin spacing required careful planning, precise handling of long roofing sheets, and disciplined installation sequencing to maintain structural accuracy and a flawless finish. Topline Roofing provided technical guidance on the internal lower entrance gutter, recommending adjustments reviewed and approved by the architect to ensure buildability, long-term performance, and an aesthetically precise result.

Architectural Roofing Features and Technical Highlights

• Installation of a 1,100 m² steep-pitch metal warm roof system
• Integration of a large central gutter and custom stainless-steel rainhead
• Installation across a post-and-rail framework forming part of the RoofLogic warm roof assembly
• Coordination of long roofing sheets requiring controlled lifting and careful positioning
• Precise fixing patterns and alignment to meet manufacturer specifications

The complexity of the roof design required disciplined sequencing and strict quality control to maintain structural accuracy, visual continuity, and long-term performance.

“Projects with steep roof geometries and custom drainage systems require careful sequencing and experienced installers. Early coordination with architects and builders is essential to ensure both buildability and long-term performance.”

Neil Gillespie, Director / Operations Manager, Topline Roofing

Technical Roofing Challenges & Solutions

Steep Roof Geometry and Sheet Handling

The roof planes were both steeply pitched and tapered, creating varying sheet lengths and alignment challenges during installation.

Handling long roofing sheets safely required:

• Careful sequencing of installation
• Controlled load distribution
• Temporary deployment of additional team members
• Precise positioning across the structural framework

This approach ensured materials were safely manoeuvred and fixed without compromising alignment or structural tolerances.

Non-Standard Drainage Design

The project incorporated several custom drainage elements that required technical coordination.

• Large central gutter system
• Custom stainless-steel rainhead outlet
• Soak hole discharge system

Topline Roofing also provided guidance on the internal lower entrance gutter, recommending adjustments to improve long-term drainage performance. All refinements were reviewed and approved by the architect before construction proceeded.

High-Performance Warm Roof System

The chapel roof was installed using the RoofLogic FibreTherm metal warm roof system, designed to provide structural performance and superior environmental benefits. The system positions insulation above the structural deck to improve thermal efficiency and maintain stable internal building temperatures.

Benefits of the Metal Warm Roof System

• Improved thermal efficiency: Maintains comfortable interior temperatures while reducing energy demand.
• Enhanced acoustic performance: Minimises external noise from nearby Great South Road and the Southern Motorway, supporting the chapel’s internal acoustic requirements.
• Strong wind resistance: Engineered to withstand exposed Auckland weather conditions.
• Low maintenance: Durable materials and detailing reduce long-term upkeep.
• Long service life: Designed for a 50+ year lifespan, supporting long-term building performance.

Topline Roofing specialises in architectural and commercial roofing projects – our team's expertise ensures complex roofs are executed to the highest standards. Learn more about Warm Roof Systems, request a quote, or enquire online now.

Roof Precision & Construction Coordination

Projects with complex roof geometry require strong communication and strict sequencing. Disciplined site planning ensured the roofing work progressed efficiently, safely, and without compromising quality.

• Structured installation sequencing
• Careful coordination with other trades
• Regular site meetings to resolve technical challenges
• Strict adherence to health and safety requirements
• Ongoing inspection of fixing patterns and alignment

This collaborative approach allowed technical challenges to be addressed quickly while maintaining installation quality.

A Striking Architectural Result

The completed roof creates a strong visual presence, defined by uninterrupted roof lines and precise detailing across the steep roof planes. The structure combines architectural clarity with high-performance roofing technology, reflecting Topline Roofing’s expertise in delivering technically complex roofing installations.

Experienced Roofing Partner for Complex Architectural Projects

Projects like St Patrick’s Chapel demonstrate the importance of working with roofing specialists who understand both architectural design intent and technical performance requirements. Topline Roofing collaborates closely with architects, builders, and project managers to ensure roofs are installed accurately, safely, and to the highest professional standards.

Planning a Roofing Project in Auckland?

If you're planning a commercial or architectural roofing project, Topline Roofing has the experience to deliver technically demanding installations with precision and reliability. Our team works with builders, architects, and project managers across Auckland to provide high-performance roofing systems for complex buildings.

Enquire with our team today to discuss your project requirements.
Call 0800 555 818, request a quote or enquire online >

FAQs About Metal WARM ROOF Systems

What is a metal warm roof system?

A metal warm roof system is a roofing method where insulation is installed above the structural deck beneath the metal roof sheets. This improves thermal efficiency, reduces condensation risk, and helps maintain stable internal building temperatures.
Learn more about Warm Roof Systems >

Why are warm roof systems used for commercial & architectural builds?

Metal warm roof systems provide:

• Improved energy efficiency
• Enhanced acoustic performance
• Reduced condensation risk
• Longer roof lifespan
• Improved weather resistance

They are particularly suited for large buildings, churches, schools, and complex commercial projects.

What makes steep-pitch roofing more complex to install?

Steep roofs increase installation difficulty because they require:

• Additional safety controls
• Specialised handling of long roofing sheets
• Careful sequencing during installation
• Precise alignment and fixing patterns

Experienced roofing contractors are essential to ensure safe and accurate installation.

How long should a commercial roofing system last?

When installed correctly using quality materials, modern metal warm roof systems are designed to last up to 50 years or more, depending on maintenance, environmental exposure, and material type.