Answer in brief
What is a roofing square?
A roofing square is 100 square feet of roof surface. Material orders also account for slope, waste, hips, valleys, starter, ridge, flashings and system-specific accessories, so squares are not the same as building footprint.
Decision inputs
What changes the answer.
Measured roof surface
This factor should be verified for the actual commercial roof rather than assumed from a photograph, age or square-foot estimate alone.
Pitch conversion
This factor should be verified for the actual commercial roof rather than assumed from a photograph, age or square-foot estimate alone.
Waste and cut complexity
This factor should be verified for the actual commercial roof rather than assumed from a photograph, age or square-foot estimate alone.
Accessory quantities
This factor should be verified for the actual commercial roof rather than assumed from a photograph, age or square-foot estimate alone.
Bundles or panel coverage
This factor should be verified for the actual commercial roof rather than assumed from a photograph, age or square-foot estimate alone.
Use a measured roof plan and full takeoff for pricing.
Related commercial system
Commercial Roof Replacement
Commercial roof replacement is appropriate when moisture or deterioration is widespread, the deck or assembly is unsound, or repair and restoration cannot produce a dependable system. The specification must account for tear-off, insulation, drainage, rooftop equipment, code, access and business continuity.
Related commercial roofing questions
Keep researching the roof.
Questions commercial decision-makers ask
Clear answers before the roof evaluation.
What is a roofing square?
A roofing square is 100 square feet of roof surface. Material orders also account for slope, waste, hips, valleys, starter, ridge, flashings and system-specific accessories, so squares are not the same as building footprint.
What information should a roofing estimate include?
The estimate should define measured quantities, system and product, removal, deck assumptions, flashings, ventilation or insulation work, cleanup, warranty and how hidden conditions are handled.
Can a roof be diagnosed from photos alone?
Photos can support triage and documentation, but they may not reveal deck condition, trapped moisture, attachment, ventilation or every flashing detail. Building-specific advice normally requires an appropriate inspection.