A properly functioning chimney protects your home from fire hazards, water infiltration, and structural decay. Yet many homeowners overlook two critical components—chimney caps and flashing—that work together to keep masonry safe. Understanding how these elements function and recognizing early warning signs of failure can help you avoid expensive repairs down the road. Why Chimney Caps Matter A chimney cap is the masonry or metal cover that sits atop the flue, shielding the interior from rain, snow, and debris. Without a cap, water can flow directly into the chimney stack, saturating mortar joints and accelerating brick deterioration. In colder climates, trapped moisture freezes and expands, widening cracks and loosening bricks. A…