Metal Roof Refurbishment Systems
Extend the service life of your commercial metal roof with specialist coating systems. Treat corrosion, restore performance, and minimise disruption with a refurbishment approach.
Is Your Metal Roof Showing Signs of Failure?
Metal roofs degrade over time due to weather exposure, thermal movement, and environmental factors. Early intervention can prevent costly damage and extend roof life.
Cut-Edge Corrosion
Rust forming along sheet edges where protective coating has degraded.
Failed Lap Joints
Water ingress at overlapping sheet joints due to failed sealants.
Leaking Fixings
Water penetration around fasteners and fixings.
Coating Degradation
Peeling, flaking, or chalking of existing coating.
Rust Staining
Visible rust marks on roof surface or interior ceilings.
Ponding Water
Standing water indicating poor drainage or roof deflection.
If you recognise any of these signs, your metal roof may benefit from refurbishment. A site survey can determine the most appropriate solution.
Request Site AssessmentRefurbishment vs Replacement
Understanding the options helps inform the right decision for your building and budget.
Refurbishment Benefits
- ✓Requires a like-for-like survey, scope and whole-life comparison with replacement
- ✓Minimal disruption to occupied buildings
- ✓Faster completion (typically 1–2 weeks)
- ✓Extends roof life by 15–20 years
- ✓No planning permission typically required
- ✓Environmentally responsible (no roof removal waste)
When Replacement May Be Necessary
- ✓Structural corrosion or deck failure
- ✓Severe roof deflection or damage
- ✓Multiple failed previous repairs
- ✓Changing building use or regulations
- ✓End of structural service life
Available Coating Systems
Different coating systems offer varying performance characteristics. Polyurethane is widely specified for metal roof refurbishment.
Polyurethane Coating
Spray-applied polyurethane systems such as Prokol TopSpray35 provide superior adhesion to metal substrates, excellent chemical resistance, and long-term durability. Suitable for cut-edge corrosion treatment and full roof refurbishment.
- Superior adhesion to metal
- Chemical and UV resistant
- Seamless waterproof membrane
- 20+ year service life
- Suitable for live roofs
Silicone Coating
Silicone systems offer good UV resistance and flexibility. Typically applied by roller or spray. Suitable for certain metal roof types where silicone compatibility is confirmed.
- Excellent UV resistance
- Flexible membrane
- Good weathering properties
- Roller or spray application
Acrylic Coating
Water-based acrylic systems may suit some applications. Selection must follow substrate, exposure, preparation, performance and current manufacturer requirements.
- Project-specific scope
- Water-based formulation
- Suitable for mild environments
- Shorter service life
The Refurbishment Process
Five stages from initial survey through to project completion.
Site Survey
Forti Nova technical team conducts site assessment, identifies corrosion extent, and evaluates substrate condition.
Specification
Technical team specifies appropriate system, coating thickness, and preparation requirements based on survey findings.
Surface Preparation
Roof is cleaned, rust-treated, and primed to ensure maximum coating adhesion and long-term performance.
Coating Application
Polyurethane coating is spray-applied in controlled passes, creating a seamless protective membrane.
Inspection & Handover
Completed work is inspected, documentation provided, and warranty details confirmed.
Frequently Asked Questions
Not a Metal Roof?
Evaluating refurbishment vs. replacement for concrete, felt, asphalt, EPDM or other commercial roof types? The Commercial Roof Refurbishment decision framework covers all commercial roof types.
Ready to Discuss Your Metal Roof Project?
Forti Nova provides site assessments, specification support, and access to approved applicators for commercial and industrial metal roof refurbishment.