Expert Commercial Roof Repair in Chicago, IL

The cost to replace a commercial roof varies depending on the size, materials, and complexity of the project. On average, it ranges between $5 to $12 per square foot, which means a full replacement can cost anywhere from $50,000 to $200,000+. We offer free inspections and detailed estimates to help you plan accurately.

Flat roofing systems are the most common for commercial buildings, particularly TPO, EPDM, and PVC membranes. These materials are popular because they are durable, energy-efficient, and cost-effective for large, flat surfaces.

The main differences are in design, materials, and scale.

• Commercial roofs are usually flat or low-slope and built with TPO, EPDM, or metal.

• Residential roofs typically have steep slopes and use asphalt shingles, tile, or wood.
  Additionally, commercial roofing systems often require more complex installation and maintenance due to HVAC units, vents, and larger square footage.

Flat roofs are ideal for commercial buildings because they are:

• More cost-effective to install and maintain over large areas

• Easier to access for maintenance and equipment installation (like HVAC units)

• Designed to support heavy loads and maximize usable space
  Flat roofs also allow for easier drainage systems and rooftop utilities, which are common in commercial settings.

The lifespan of a commercial roof depends on the material, installation quality, and maintenance. On average:

• TPO and PVC roofs last 20–30 years

• EPDM (rubber roofs) can last up to 40 years

• Metal roofs may last 30–50+ years with proper care

If your roof is over 20 years old, showing signs of leaks, sagging, or energy inefficiency, it may be time to consider a replacement. We recommend annual inspections to catch issues early and extend the life of your roof.