Embracing Technology and Avoiding Risky Roof Walks: A Drone - Powered Solution at the Duke of Cornwall Masonic Lodge

DJI Matrice 30T

Back in April, we took a giant leap forward in roof inspection technology at the Duke of Cornwall Masonic Lodge in St. Columb, Cornwall. Rather than climbing onto a potentially weak and aging roof, we embraced cutting-edge drone technology to gather detailed, accurate data safely and efficiently.

Using the DJI Matrice 30T, we captured an impressive 1,476 photos at both 90° and 75° angles. These images were meticulously stitched together in WebODM, producing a full 3D model of the lodge’s roof. This wasn’t just any model - it came with exceptional mapping accuracy: vertical precision of ±0.1 m, horizontal accuracy of ±0.3 m, and the onboard laser rangefinder allowed us to capture precise object coordinates across a range from 3m to 1200m.

Why go to all this effort? The roof is due for replacement, and knowing the exact size, height, and square meterage was crucial for planning. Thanks to the 3D model, we obtained all those measurements perfectly. Plus, this digital record means we can retrieve additional data down the line - like the exact roof-to-scaffolding height once the work kicks off - without stepping foot on the roof again.

Operating drones in St. Columb presented its own challenge, as the area falls within a flight restriction zone under Newquay Airport’s jurisdiction. Before flying, we had to secure prior permission and submit flight documentation to Newquay’s Air Traffic Control. On the day of the operation, coordination was critical: we communicated directly with air traffic before takeoff and landing to ensure safety and compliance. Considering Newquay Airport is a hub for air ambulance, Coastguard Search and Rescue, military, and commercial flights, this level of caution was absolutely necessary.

All in a day’s work - leveraging technology to make inspections safer, easier, and more precise. Here’s to working smarter, not harder! 👏