When it comes to installing solar panels on a slate roof, the mounting system you choose is just as important as the panels themselves. Slate is a durable yet fragile material, and traditional solar mounting hardware designed for asphalt shingles or metal roofs can easily cause cracks, leaks, or long-term structural issues.
If you own a slate roof—or are a solar installer working on one—understanding how to mount panels safely is critical to success.
Why Slate Roofs Require Special Care
Slate roofs are beautiful, long-lasting, and often a key architectural feature of older or historic homes. But that same beauty can become a challenge when installing solar. Slate tiles are brittle, and walking or drilling on them can lead to damage that’s expensive to repair.
That’s why a specialized mounting system is essential. The goal is to secure solar panels without breaking or penetrating the slate surface.
What Makes a Mounting System “Slate-Safe”
A proper solar mounting system for slate roofs should include the following:
- Non-penetrating design: Avoids drilling through slate tiles, which can lead to leaks.
- Durable flashing and seal system: Keeps moisture out and protects the underlayment.
- Corrosion-resistant materials: Stainless steel or aluminum components withstand decades of exposure.
- Easy removal or replacement: Allows roof maintenance without disturbing the solar array.
Systems designed specifically for slate—like the Solar Slate Plate—are engineered to meet these needs. They create a stable base for the solar panel racking system while preserving the integrity of the slate tiles underneath.
The Cost of Using the Wrong Mounting Hardware
Many homeowners assume that any solar installer can handle a slate roof, but that’s often not the case. Installers using standard mounting brackets risk cracking slates during installation, which leads to water intrusion and costly repairs later on.
Even worse, these mistakes can void both the roof warranty and the solar panel warranty. That’s why hiring an installer who understands slate—and uses the proper equipment—is worth every penny.
Choose a System Designed for Slate
If you’re planning solar on your slate roof, insist on a mounting system specifically engineered for it. A professional familiar with the correct hardware will ensure your roof remains watertight, your panels are secure, and your investment delivers long-term returns.
To learn more about products made for slate—including the Solar Slate Plate—and to find experienced installers, visit SolarOnSlate.com.
