Roof Replacement and Solar Panels: Should You Replace Your Roof First?

Technically, yes—you can install solar panels yourself. However, it’s a complex process that requires knowledge of electrical systems, roofing, and local building codes. One of the biggest challenges DIY installers face is navigating local regulations and obtaining the necessary permits. In Oregon, for instance, solar installations typically require permits from local authorities, which can take several weeks to process. These permits ensure the system meets safety standards and can be properly connected to the utility grid¹. Without the correct permits, homeowners may face fines or even be required to remove the system.

Another critical factor to consider is the potential for reduced efficiency. Improperly installed panels—such as those mounted at incorrect angles or facing the wrong direction—can reduce energy output by 10-20%, impacting your expected savings and potentially outweighing the initial cost savings of DIY installation². Furthermore, incorrect wiring or failure to meet code requirements can lead to operational issues or even safety hazards, such as electrical fires.

Maintaining a roof with solar panels is straightforward and essential for optimal system performance. In Oregon, frequent rain can naturally clean the panels, but regular manual cleaning may be necessary if you live in a dusty area or experience minimal rainfall. To clean your panels, use a soft brush or microfiber cloth and avoid harsh chemicals or pressure washers, which could damage the panels or scratch the surface⁹.

If you’re asking yourself, “Should I replace my roof before installing solar panels?” consider maintenance needs. Solar panels can help protect your roof from weather damage, but routine inspections are crucial. Periodically check for debris or nests beneath the panels, as animals can sometimes nest there, potentially causing roof damage or reducing efficiency. Installing critter guards can prevent animals from getting under the panels.

In winter, if you experience heavy snowfall, gently remove snow with a soft tool to avoid scratching the surface of the solar panels¹⁰. Proper maintenance helps ensure that your roof and solar panels stay in excellent condition, maximizing their longevity and performance.

Yes, installing a solar roof can significantly increase your home’s value. Studies from EnergySage show that homes with solar energy systems tend to sell for about 4% more than comparable homes without solar¹¹. This premium can be even higher in markets with high electricity costs, where energy savings are highly valued by buyers.

In addition to boosting home value, solar panels can make properties more attractive to buyers. According to Zillow, homes with solar systems often sell faster, commanding premiums of up to $24,000 more than homes without solar, depending on the system size and location¹². If you’re considering a solar installation but wondering, “Should I replace my roof before installing solar panels?” remember that a well-maintained or newer roof can further enhance this added value by minimizing future maintenance.

Ultimately, a solar roof saves on electricity bills and makes your home more appealing and valuable to future buyers.