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Metal Roof Restoration in Northcote: Extending Roof Life Without Replacement

Project Snapshot

Client: Body Corporate Property 
Location: Northcote, VIC 
Service: Metal Roof Restoration 
Main Challenge: Surface corrosion, weathering, and areas vulnerable to water ingress 
Solution: Roof restoration using an anti-corrosion and waterproofing membrane system 
Access Method: 26' Scissor Lift
Key Product: Noxyde Anti-Corrosion Waterproofing Membrane®
Outcome: Restored and protected roofing system using an anti-corrosion and waterproofing membrane

Extending The Life Of An Ageing Metal Roof In Northcote

The metal roof at this Northcote property had begun showing signs of deterioration, with rust and leaks becoming an increasing concern for the body corporate responsible for maintaining the building.

As with many ageing metal roofs, ongoing exposure to the elements had impacted the condition of the roofing system, creating concerns about its ability to continue providing reliable protection. The body corporate recognised the importance of addressing these issues before further deterioration led to more extensive repairs or costly replacement works.

To protect the asset and address the visible signs of wear, intervention was required to restore the roof and improve its long-term performance.

Roof Assessment and Condition Report

Before restoration works commenced, our team carried out a detailed inspection of the metal roof to identify areas requiring attention.

The assessment confirmed the presence of rust and leaks across sections of the roofing system, highlighting signs of deterioration that required remediation. Surface contamination and loose rust particles were also present across the roof, affecting the condition of the existing substrate.

In addition to the roof sheeting, the scope included box gutters that would require attention as part of the overall restoration project. The findings from the inspection helped determine the most appropriate strategy for restoring and protecting the roof.

Key Issues Identified During the Roof Assessment

During the inspection, several issues were identified that required attention as part of the restoration project:

Rust across sections of the metal roof.

Existing leaks affecting the roofing system.

Surface contamination and loose rust particles present across the roof surface.

Small holes and degraded sections requiring remediation as part of the restoration works.

Why Restoration Was Chosen Instead Of Replacement

With rust and leaks affecting sections of the roof, action was required to address the deterioration and protect the asset from further decline.

Rather than proceeding with a full roof replacement, a restoration approach was selected to address the identified issues while retaining the existing roofing system. The project was undertaken to remediate areas affected by rust and leaks and help prevent the need for more costly replacement works.

Our Roof Restoration Strategy

Following the assessment, restoration works commenced with a focus on preparing and protecting the existing roofing system.

To ensure all surfaces were ready for treatment, the roof was thoroughly cleaned using high-pressure washing equipment fitted with Graco turbo heads. This process removed dirt, contaminants, and loose rust particles from the roof surface.

Safe access to the roof was achieved using a 26' scissor lift, allowing our team to carry out the restoration works across all required areas. Particular attention was given to small holes and degraded sections of the roof, which were reinforced using membrane tape before protective coatings were applied.

The restoration scope also included the roof's box gutters to ensure a consistent approach to protection across the roofing system.

Anti-Corrosion Membrane System

To protect the roof from further corrosion and water ingress, we applied the Noxyde Anti-Corrosion Waterproofing Membrane® across the roofing system, including the box gutters.

Noxyde is a direct-to-metal elastomeric coating designed to provide both corrosion protection and waterproofing. The membrane can be applied to suitably prepared metal surfaces and offers up to 200% elongation, making it suitable for use on roofing substrates requiring a flexible protective coating system.

To achieve the required coverage, the membrane was applied in multiple coats, with particular attention given to small holes and degraded sections that had been identified during the restoration works.

Noxyde Anti-Corrosion Waterproofing Membrane®

Noxyde Elastomeric Acrylic Coating is a high-performance, high-build, rust-preventative water-based coating. Noxyde is self-priming and designed for marginally prepared, sound-rusted, or clean steel in mild to severe industrial environments. It can also be used on concrete and has excellent elongation properties of 200% making it suitable for bridging small cracks. This single component coating resists corrosion, rust, and water even in severe marine environments. Can be top coated with multiple Rust-Oleum High Performance products for an extended service life for your assets.

Direct-to-Metal, Self-Priming, High-Build Water-Based Formula - Performs Like Zinc/Epoxy Coatings Without the need to Abrasive Blast - Provides Flexible Durability - Up to 200% Elongation - Excellent Adhesion and Performance over Minimal Surface Pre

The Outcome

The restoration works addressed the rust, leaks, and deteriorated areas identified during the initial assessment.

Following surface preparation and treatment, the roof was protected using an anti-corrosion and waterproofing membrane system applied across the roof surface and box gutters. Small holes and degraded sections were reinforced as part of the restoration process.

The completed works provided the body corporate with a restored roofing system incorporating anti-corrosion and waterproofing protection across the roof surface and box gutters.

The Dulux Avista range includes decorative finishes and concrete sealers ideal for a wide variety of flooring environments. Its versatility makes it suitable for commercial interiors, garages, and showrooms where both protection and aesthetic impact are essential. MPC recommends this range for its reliable coverage and ability to enhance the visual appeal of spaces without compromising durability.
Joe Zammit

Frequently Asked Questions

Can a rusted metal roof be restored instead of replaced?
In many cases, yes. If the existing roof remains suitable for restoration, issues such as rust, weathering, and leaks can often be addressed without the need for a full roof replacement. The most appropriate solution will depend on the condition of the roof and the extent of any deterioration.
How do you stop rust on a metal roof?
Treating rust typically involves removing loose corrosion and contaminants before applying a suitable anti-corrosion coating system. The preparation requirements and coating system used will depend on the condition of the roof and the level of corrosion present.

Why is surface preparation important before repainting?
Surface preparation helps remove contaminants, improve coating adhesion and create a suitable foundation for the new paint system. Proper preparation is essential for achieving a long-lasting result.
What is an anti-corrosion membrane?
An anti-corrosion membrane is a protective coating designed to help protect metal surfaces from corrosion while also providing waterproofing properties. These systems are commonly used as part of metal roof restoration projects to help protect existing roofing assets.
Do roof restoration projects include box gutters?
Project scope will vary depending on the condition of the roof and the client's requirements. For this Northcote project, the restoration works included the roof's box gutters as part of the membrane application scope.
How do I know if my roof needs restoration or replacement?
A professional roof inspection can help determine the most appropriate solution. Factors such as rust, leaks, substrate condition, and the overall condition of the roofing system will influence whether restoration or replacement is recommended.