Exposed fastener metal roofing is a common, cost-effective choice for various structures, but when it comes to rooftop solar racking, compatibility depends on several factors. This type of roofing uses screws with rubber washers that penetrate the metal panels to hold them in place. Roof-mounted solar systems require secure, watertight attachment points, but repeated penetrations can risk leaks and reduce the roof’s lifespan if not properly done. The challenge is that exposed fasteners can loosen over time due to thermal expansion and contraction, affecting the solar rack’s stability. Homeowners or roofers can perform simple visual checks to identify any rust, loose screws, or degraded sealant around fasteners. These issues suggest the roof may need maintenance before solar installation to prevent future water entry and structural concerns.
If you’re considering solar for an exposed fastener roof, it’s essential to call a roofer or solar professional with experience in this specific roofing style. They can assess your roof’s condition and advise whether additional sealing, fastener replacement, or mounting system adjustments are necessary. When consulting a contractor, ask if they use non-penetrating or minimally penetrating mounting systems designed for exposed fastener roofs, and inquire about how their work will affect your roof’s warranty. This ensures you protect your investment and avoid expensive repairs. Remember that safe DIY checks focus on looking for clear signs of wear, but the complexity of solar mounting demands professional expertise to maintain roof integrity and long-term weatherproof performance.