Johnson Roofing shares the pros, cons, and myths of Solar on Metal Roofs to help you enhance roof durability, boost efficiency, and save on energy costs.
The demand for renewable energy is rising in New Zealand as property owners seek sustainable ways to cut electricity costs. Installing solar on metal roofs has become a popular solution. This article outlines metal roof types, their pros and cons for solar, and clears up common misconceptions to guide your decision.
Types of Metal Roofing in NZ
Metal roofs are common across NZ homes and businesses, offering strength, durability, and weather resistance. Here are three types suited for solar panels:
• Corrugated Iron Roofing – Corrugated iron is a cost-effective, lightweight, and durable roofing option. It’s popular for homes and supports solar panels with secure mounting brackets.
• Standing Seam Metal Roofing – Standing seam roofs have raised vertical seams that let solar panels clamp on without roof penetrations, reducing leaks and simplifying installation.
• Metal Tile Roofing – Metal tiles offer the look of traditional tiles with the strength of steel or aluminium, supporting solar panels with proper racking for stability and protection.
The Pros and Cons of Installing Solar on Metal Roofs
| Pros | Cons |
| Long-lasting roof life complements solar system lifespan | Higher initial installation costs |
| Easy installation on standing seam panels | Potential glare on some roof finishes |
| Reflective surfaces improve energy efficiency. | Complex installation on older or corroded roofs |
| Lightweight structure supports solar panel loads. | Roof warranty may require certified installers. |
| Low maintenance requirements | May require additional planning for cable management |
Common Myths About Solar on Metal Roofs — Debunked
Many property owners hesitate to install solar on metal roofs due to widespread misconceptions. In reality, when handled by experienced professionals, metal roofs and solar systems work seamlessly together.
“Solar panels damage metal roofs” – Why this is false with proper racking systems.
“Metal roofs get too hot for solar” – How ventilation gaps keep panels cool.
“It’s harder to install on metal than tile or shingle roofs” – Often, the opposite is true.
“Metal roofs can’t support the weight of solar panels” – Weight and load facts.
These myths often stem from poor-quality installations rather than actual compatibility issues. Working with accredited installers ensures both the roof and solar system remain protected and efficient.
Tips for a Successful Solar Installation on a Metal Roof
Planning is key to ensuring a secure and efficient solar setup. Here are three essential tips:
• Engage Certified Roofing and Solar Installers – Hire professionals with proven experience in installing solar panels on metal roofs. They can design systems that suit your roof profile while safeguarding your roof warranty.
• Assess Roof Condition Before Installation – Ensure your roof is in excellent condition before installing solar panels. Address any corrosion, loose fasteners, or structural issues to avoid future complications.
• Schedule Solar Installation During Roof Replacement or Upgrades – If you are planning a roof replacement, align it with your solar installation. This reduces labour costs and ensures both components are installed to the highest standards.
Combine Metal Roofing and Solar for Lasting Value and Energy Savings
Metal roofs are an excellent match for solar panels when installed by experienced professionals. At Johnson Roofing, our team ensures your metal roofing system is expertly fitted to maximise solar compatibility and long-term performance. By combining durable metal roofing with renewable energy solutions, homeowners can significantly reduce energy costs while boosting the value and sustainability of their property.
Contact us for expert advice or a free quote on your roofing and solar installation project. Learn more about our roofing services and metal roofing solutions to start your sustainable energy journey.
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