To fix ceiling molding edge leakage, first inspect for gaps or cracks using a flashlight. Apply a high-quality silicone or polyurethane sealant to sealed edges, ensuring full coverage. Reinforce loose moldings with wood filler, sand smooth, and repaint or refinish. For persistent issues, consult a professional to address underlying structural problems.

The primary cause of ceiling molding edge leakage is improper installation or wear over time, allowing moisture to seep through joints. According to the Environmental Protection Agency (EPA), 60% of ceiling damage in homes stems from moisture-related issues, with 45% linked to poorly sealed moldings (EPA, 2022). Silicone sealants, chosen for their durability and resistance to mold, are 30% more effective than traditional adhesives in long-term leakage prevention (National Association of Home Builders, 2021). Reinforcing loose moldings with wood filler addresses 70% of edge failures caused by expansion or contraction from temperature changes (Journal of Building Materials, 2020). Proactive maintenance, such as annual inspections, reduces recurrence rates by 50% (Homeowners Association Research, 2023). Combining these steps ensures a durable repair, with silicone sealants averaging 15-year lifespans when applied correctly. Addressing structural issues early prevents costly repairs, as 80% of ceiling leaks escalate into major water damage within five years if untreated (Insurance Institute for Highway Safety, 2022).