Drones are a Safer, Cost-Effective Alternative to Boots-on-the-Roof.
Falls are the leading cause of death on industrial job sites. With drones, you reduce, and in some cases eliminate, the need for ladder assists and boots-on-the-roof data collection. Drones are a far faster and more cost-effective way to gather information and turn it into actionable data. In fact, end-to-end drone solutions have proven to be at least three times faster than traditional methods.
But the return-on-investment for drones on rooftops goes beyond just the savings in time and human resources. Drones deliver a far more productive set of data compared to what can be gathered by manual measurement.
Drone imaging doesn’t just deliver data on roof planes, slopes, and areas. A detailed point cloud captures the entirety of the roof in high-resolution detail, giving a powerful set of data to residential and commercial roofers, solar installers, and anyone looking to do design work on top of drone-based roof data. And all of this data is readily shareable in a variety of export formats so that you can integrate it with your favorite industry tools.

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Link:  "Inspecting a Roof--10x faster with drone mapping"