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Scoping · Paul Cadena

What a good roofing scope actually says.

If three bids look the same but mean three different things, the scopes are not doing their job.

Commercial roofing · Proposals · 5 min read
Roofing tools and notes laid out on a work surface.

A roofing proposal should not depend on assumptions hidden in someone’s head. A good scope names the system, the materials, the details, and the limits of the work so the owner knows what is included.

What should be clear

  • System type: TPO, EPDM, modified bitumen, coating, metal, repair, or another assembly.
  • Thickness and materials: Membrane thickness, insulation, cover board, fasteners, adhesives, and edge metal.
  • Details: Walls, curbs, drains, penetrations, scuppers, terminations, and walkway pads.
  • Exclusions: Deck replacement, hidden damage, electrical, HVAC, masonry, and other items outside the roofing scope.
  • Warranty: What type, how long, and who is responsible for it.

Why this matters

Owners often compare numbers before they compare scopes. That is dangerous. One contractor may include details another missed. A cheaper bid can become expensive if it is missing the work that actually protects the building.

When you compare roofing proposals, ask each contractor to explain the scope in plain English. The right answer should make the difference between bids easier to see.