Do I Need a Commercial Roof Inspection or Survey?

"Inspection" and "survey" are often used interchangeably but describe different services with different scopes and purposes. Here's how to know which one you need.

The Roof Inspection

A standard roof inspection is a visual assessment by a qualified roofing professional. It covers: membrane condition and visible deterioration, seam and flashing integrity, penetration seal condition, drain and gutter condition, visible ponding areas, and any obvious damage. Typical duration: 1–3 hours for most commercial roofs. Cost: $0.005–$0.02/sq ft. Best for: annual maintenance, post-storm damage assessment, pre-purchase review of commercial property.

The Roof Survey

A roof survey includes inspection plus diagnostic testing. Full survey adds: infrared scanning (moisture mapping), core sampling (wet insulation confirmation), slope and drainage analysis, and comprehensive written report with photos. Typical duration: full day plus lab results. Cost: $0.02–$0.05/sq ft. Best for: pre-restoration/replacement decision-making, warranty claims, building purchase due diligence on older roofs.

Which One Do You Need?

Annual checkup or post-storm assessment: inspection. Considering restoration or replacement, multiple leaks appearing, building purchase, or warranty claim: full survey. If your roof is over 15 years old and you haven't had a survey in the last 3 years, schedule one regardless of visible condition. Moisture damage that an inspection can't see may already be limiting your restoration options.