Three-tab shingles are a common and cost-effective roofing material that can work with rooftop solar racking, but there are some important considerations to keep in mind. These shingles are flat and relatively thin, which means they can accommodate the mounting hardware for solar panels, but the installation process requires care to avoid damaging the shingles and compromising the roof’s integrity. Over time, three-tab shingles tend to wear faster and may be more prone to cracking or granule loss, so if your roof is older or already showing signs of wear, solar installation might accelerate deterioration. Before installing solar racks on a roof with three-tab shingles, it’s a good idea to check the overall condition of the shingles, ensuring they’re not brittle or curling. Safe, simple DIY checks include looking for missing granules, cracks, or loose tabs, and gently pressing on shingles to detect any brittleness. If you notice significant wear, it’s better to address those issues before mounting solar panels.
Calling a roofer with solar experience is advisable, especially if you’re unsure about your roof’s readiness. A professional can assess the roof’s structure, age, and condition, and determine if repairs or a partial replacement are needed before installation. When speaking with a contractor, ask specific questions such as “How will you protect or reinforce three-tab shingles during installation to prevent damage?” and “Can you explain how the warranty on both the shingles and solar mounts will be maintained?” These questions help clarify whether the roofer understands the delicate balance between securing solar panels and preserving the roof’s waterproof barrier, which is critical for long-term durability and protecting your investment.