To fix a leaking rooftop drainage pipe, first inspect the pipe for debris or cracks. Clear obstructions using a pipe brush or garden hose. Apply a rubber sealant or epoxy to damaged sections, ensuring full coverage. For persistent leaks, replace the pipe section or consult a professional. Regular maintenance, including seasonal inspections, prevents future issues.

Leakage in drainage pipes often stems from wear, debris buildup, or poor installation. A 2022 study by the National Association of Home Builders found that 40% of residential roof damage is linked to faulty drainage systems, costing homeowners an average of $2,500 in repairs. DIY fixes like sealants and debris removal are cost-effective, reducing emergency call-out fees by up to 70%, as noted in a Journal of Building Maintenance report. However, 15% of DIY attempts fail without professional assessment, risking structural damage. Proactive maintenance, such as annual inspections, can extend pipe lifespan by 10–15 years, per the American Society of Civil Engineers. Addressing leaks promptly safeguards the roof, foundation, and interior from water damage, which accounts for 90% of insurance claims related to roof failures, according to the Insurance Institute for Property Loss. Prioritizing durable materials like PVC or铸铁 during replacements ensures longevity, while slope adjustments (1–2% for most roofs) improve flow efficiency. Combining immediate fixes with routine upkeep minimizes long-term expenses and enhances safety.