"Roof data" can sound like a big project: drone surveys, sensors, thermal scans and dashboards. Some of that is useful, but most roof decisions come down to a short list of facts. If you have those for every roof and keep them current, you're ahead of most portfolios.
Collect these for every roof
- Sections and areas. Where the roof changes system, age or drainage, treat it as a separate section.
- System and manufacturer. This drives repair methods, compatible coatings and who can work on it.
- Installation year. Even an estimate is useful.
- Warranty details. Dates, coverage and the conditions you have to meet.
- Inspection history. Dated reports with photos, and a condition rating recorded the same way each time.
- Repair history. What was wrong, where, what was done and what it cost.
- Rooftop equipment and penetrations. These are where most leaks start.
- Drainage. Drains, scuppers and gutters, and any spots where water ponds.
Nice to have, later
- Core samples showing the layers and insulation. Valuable before a replacement or restoration decision, not needed on day one.
- Infrared or moisture surveys. Useful for finding wet insulation on older roofs or before a coating project.
- Drone imagery. Good for large or hard-to-reach roofs and for a visual baseline. It doesn't replace someone walking the roof and checking seams and flashings.
- Sensors. Leak and moisture sensors can make sense over critical spaces. For most roofs they're not where to start.
What to skip
Skip anything you won't use to make a decision. A thirty-field inspection form that nobody fills in consistently is worse than a short one that everyone completes. Every piece of data should answer a question you actually ask: does this roof need work, is the warranty safe, and what should we budget?
Keeping the data trustworthy
- Date everything. A condition rating without a date is close to useless.
- Use the same rating scale every time, ideally with a short written definition of each level.
- Attach the evidence. Photos and reports, not just a summary line.
- Record who said it. Knowing whether a finding came from your own staff, a contractor bidding on work or an independent inspector matters.
- Keep it with the building, not with one person or one contractor.
Good roof data isn't about volume. It's about having the right few facts, dated and trustworthy, for every roof you're responsible for.