Roof Decking Rot & Valley Leak Repair | Bibby's Roofing Duncanville AL

The first signs are often subtle. From the inside, look for dark spots or sagging on your ceilings, especially after heavy rain. In the attic, check for a musty smell, soft spots when walking, or visible water stains on the underside of the roof deck. Outside, you might notice cracked or curling shingles, which can indicate a weakened deck underneath. If you see any of these signs, it's crucial to get a professional inspection to prevent further structural damage.

Valley leaks often recur because the underlying issue wasn't fully addressed. A simple patch on shingles doesn't fix problems with the flashing—the metal channel that directs water—which can be corroded, improperly installed, or displaced. In Duncanville's climate, debris buildup in the valley can also wear away at the protective layers over time. A permanent fix requires a comprehensive evaluation of the entire valley system, including the flashing, underlayment, and proper sealing, to ensure water is correctly channeled away from your home.

Our assessment starts with a safe, thorough inspection. We examine the roof exterior for sagging lines and damaged shingles. Then, from inside the attic, we carefully probe the decking for soft, spongy, or brittle areas to map the rot. We also check for proper attic ventilation, as poor airflow here in Alabama is a major contributor to decking rot. This detailed approach allows us to give you an accurate estimate, specifying exactly which sections need replacement versus which are still structurally sound, ensuring a repair that's both effective and cost-efficient.