What Is a Flat Roof? A flat roof is a roofing system that’s nearly level, with a slight pitch to allow water drainage. Why Opt for Flat Roofs? They provide additional usable space, such as rooftop gardens or HVAC system placement. 2. TPO (Thermoplastic Polyolefin): Known for energy efficiency https://flat-roof-installation-and-repair.trustedstandard.com