Clay tile flashing is crucial because it directs water away from vulnerable areas like roof valleys, chimneys, and walls, preventing leaks and water damage. The best flashing for clay tile roofs typically involves a combination of metal flashings, such as copper or aluminum, shaped to fit under or over the tiles, respecting their overlapping pattern. The flashing should be installed with proper step or counter-flashing techniques to ensure water flows down and away without entering the roof system. Because clay tiles are heavy and often curved, the flashing must be carefully integrated without cracking the tiles or disrupting their placement. Over time, flashing can corrode, loosen, or become misaligned, causing leaks that can be tricky to spot from the attic.
For a basic DIY check, look for visible signs of flashing damage, such as rust, gaps, or loose edges around chimneys, vents, and roof intersections. You can gently lift a few tiles near flashing to see if the metal shows obvious holes or tears but avoid forcing or breaking tiles. If you notice stains, water spots, or mold inside your home, or if any flashing looks compromised during your inspection, it’s wise to call a professional. When speaking to a roofer, ask about the materials they recommend for flashing on clay tile roofs and how they ensure proper integration with your specific tile style. Also, inquire about warranty coverage on both the flashing and tile installation to protect your investment.