Flat commercial roofing can usually be restored for a fraction of the cost of a replacement, and the roof is rejuvenated and warrantied to the same level as a brand new roof!Commercial flat roofs are typically covered with rubber membrane, metal sheets, or asphalt. These roofing materials have lifespans ranging from as short as 10 years to as long as 30. When any of these roofing systems leak, business owners can opt to repair and restore them with newer applied membrane or spray-on materials.