A 50,000 sq ft flat roof replacement is typically completed in planned phases over multiple days to weeks, with the exact schedule confirmed after an on-site inspection. Duration mainly depends on roof system choice (TPO/metal), the number of penetrations, needed deck repairs, weather, and site access. Our commercial crews handle large and complex flat systems and use dedicated project management to sequence sections, manage logistics, and maintain safe access while work is underway. Reviews also note thorough cleanup and efficient tear-off and installation on prior projects. For qualifying commercial complete replacements, a 20-year full system warranty is available.
On occupied buildings, common steps we plan to reduce impact include:
- Phased sections so only part of the roof is active at a time.
- Clearly marked access routes and safety zones for tenants.
- End-of-day cleanup to promptly reopen walkways and parking.
Our commercial team regularly serves properties across the Macomb area. Schedule an on-site assessment to confirm duration and map sections before work begins.
Updated: 2026-05-07
Need help in Macomb, MI? Call (586) 300-4163 or book online at https://kanga-roof.com/schedule-inspection-now/ "Great service, speedy, and high quality roof replacement on our 8,700 sqft building... basically done in two days... not one issue since." — Michael L.