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Commercial Roofing vs. Residential Roofing Costs

Installing a residential flat roof is more costly than a commercial flat roof per square foot due to the following reasons:

  1. Roof Size – limited space causes movement restrictions of people and materials.
  2. Objects – such as vents, skylights, and chimneys require more detailing for the proper transition to the membrane
  3. Siding –  must be removed and replaced in areas where the roof meets the walls
  4. Railing – railings must be removed and reinstalled
  5. Posts – must be reflashed to the new membrane
  6. Shingle roofing – must be removed and replaced for a proper transition
  7. Door sills – require a very detailed transition to the new membrane
  8. Gutters – require removal and reinstallation
  9. Surrounding Landscape – restricts access to the roof

The video below shows how an existing roof is stripped, cleaned, and prepared for the placement of a new membrane. Normally, the most labor intensive work is cleaning and repairing the flashing.

The video below shows where we have already replaced plywood and made the necessary preparation to install a new rubber membrane.

flashing on skylights and other parts of roof

Ninety percent of the time, a leak can be traced to incorrectly installed flashing. Installing flashing requires special techniques for different types of roofing systems.

Regardless of what type of material is being installed on a commercial or residential roof, it is more important to choose the right flat roofing contractor.

flashing around chimney corroded away