A&t Roofing | Roofing Services in Saint Louis, MO 63136

In Saint Louis, flashing separation is often caused by temperature fluctuations and severe weather, which cause materials to expand and contract. Our repair process involves removing the compromised flashing, inspecting the underlying deck for water damage, and installing new, code-compliant flashing sealed with durable, flexible sealants designed for our local climate to prevent future leaks.

Valley leaks are common because this area funnels the most water during our heavy Midwestern rains and snowmelt. Debris buildup and worn underlayment are typical culprits. We repair them by thoroughly cleaning the valley, replacing damaged underlayment with high-grade ice and water shield—a critical step for our winters—and ensuring all shingles are properly overlapped and sealed to restore the valley's water-shedding integrity.

Look for water stains on ceilings or walls, especially near chimneys, vents, or where roof planes meet (valleys). After a storm, check your attic for moisture or drips in these specific areas. Since the source can be tricky to pinpoint, we offer free, thorough inspections to accurately diagnose whether it's a flashing issue, a valley problem, or another concern, providing you with a clear repair plan.