Why do newly installed commercial flat roofs sometimes leak within the first five years?

Newly installed commercial flat roofs sometimes leak within the first five years because small installation errors, weak detailing at seams and penetrations, poor drainage design, or skipped maintenance let water find a path in. Most early leaks start where the membrane meets flashing or rooftop equipment because those transitions move with weather and building flex. Our team provides commercial roof inspections, preventative maintenance, and resealing of penetrations to stop these issues from compounding, and we regularly serve businesses throughout the West Bloomfield area.

Look for these early leak sources:

• Open seams or poorly welded laps
• Flashing gaps at walls, parapets, skylights, or pipes
• Clogged drains that cause ponding water
• Punctures from foot traffic or HVAC work

Schedule a professional flat-roof inspection and set a maintenance plan to verify drainage, seal details, and document repairs before weather makes damage worse. <br/> Updated: 2026-05-07 <br/> Need help in West Bloomfield Township, MI? Call (586) 300-4163 or book online. “Rich was informative, professional, and repaired the roof leak efficiently.” — Dawn M.