Commercial roofs are priced per square foot
Residential roofers price by the 100 sq ft square. Commercial work is usually quoted per square foot or as a lump sum from a measured takeoff. For early budgeting in Florida, single-ply systems such as TPO commonly land in a range of roughly $6 to $14 per square foot installed, modified bitumen and built-up roofs a bit higher, and standing-seam metal substantially higher. These are planning ranges only: the real number depends on the factors below and on current material pricing.
What drives the number
Roof size and shape, number of penetrations (HVAC curbs, vents, drains), tear-off versus recover over the existing roof, insulation thickness and R-value, wind-uplift and warranty requirements, and how hard it is to get materials onto the roof. Hurricane-rated edge metal and fastening schedules add cost but are central to Florida performance.
Hidden costs to budget for
Wet insulation and rotted decking are found only after tear-off, so good proposals carry unit prices for them. Also plan for permits and engineering, code upgrades such as added insulation or drainage, crane or hoisting, off-hour work, and temporary protection for tenants or guests.
Replace, recover or coat?
A recover over a sound roof saves tear-off but is limited by code and moisture. A restoration coating can extend the life of a roof that is still dry, but it cannot fix wet insulation. A moisture survey or core samples before deciding is inexpensive compared with the decision it informs.
Get a number you can budget with
Send us the building address, approximate size and current roof type. We survey the roof, document its condition with photos and moisture readings where needed, and return an itemized written proposal.
General information, not legal or insurance advice. Confirm requirements with your insurer and local building department.