How Much Will a Commercial Roof Cost?

Commercial roof costs vary widely based on system type, roof size, condition, and complexity. Here's a comprehensive breakdown to help building owners budget accurately.

Cost by System Type

Silicone coating restoration: $2.00–$5.00/sq ft. Spray foam restoration: $4.00–$8.00/sq ft. TPO replacement: $5.00–$9.00/sq ft. EPDM replacement: $5.00–$8.00/sq ft. Metal roof restoration: $2.50–$8.00/sq ft. Full BUR replacement: $8.00–$14.00/sq ft.

What Drives Cost Higher

Wet insulation extent (each sq ft requiring removal adds $0.50–$2.00). Roof complexity (many penetrations, multiple levels, difficult access). Warranty tier chosen (20-year costs more than 10-year). Travel distance for contractor. Emergency vs. planned scheduling.

What Drives Cost Lower

Larger roof size (economies of scale). Choosing restoration over replacement. Minimal wet insulation. Simple roof geometry. Off-peak scheduling.

Total Project Examples

25,000 sq ft TPO replacement: $125,000–$225,000. 50,000 sq ft silicone coating restoration: $100,000–$250,000. 100,000 sq ft spray foam restoration (2 inch): $400,000–$800,000.

The Most Important Rule

Get core samples before accepting any cost estimate. The wet insulation extent is the most variable cost factor — and it's impossible to estimate accurately without testing. Any proposal without core sample data is a guess, not a quote.