From drone flight to reliable measurements – how master roofer Harnack measures roofs digitally today

Benjamin Harnack runs a roofing company in the southeast of Berlin, specialising in energy-efficient roof renovations for single-family homes. Precise measurements are the foundation of every solid calculation – and for a long time, this was exactly where the biggest challenges lay.

In the past, roof measurements meant ladders, tape measures and hand-drawn sketches. And still, important details often only became apparent once back in the office.

“You’d take the measurements, sit down to write the invoice – and then realise: the valley is missing, the dormer is missing.”

Especially on complex roofs, this regularly led to additional site visits, lost time and uncertainty in both quoting and billing.

The turning point came in 2018 during a particularly demanding project: a three-sided courtyard building that Benjamin was asked to measure after completion.

How master roofer Harnack works with Airteam today

Today, Benjamin uses Airteam before preparing quotes and after completing projects for final billing.
A short drone flight captures the building, and Airteam’s AI generates a precise 3D model. This model then becomes the digital basis for all measurements.

The key difference:
Benjamin no longer measures on the roof, but directly inside the 3D model – safely, completely and fully traceable at any time.

What has changed in practice:

• All roof areas, dormers and valleys are fully captured in the 3D model

• No re-measuring, no missing dimensions, no extra site visits

• Exact quantities as a reliable basis for quotes and invoices

• Improved safety, as no one needs to climb across roof surfaces

“No more estimating by eye – but measurements that are fully traceable.”

More transparency for homeowners – less effort in the office

Based on the 3D model, Benjamin now creates a clear and easy-to-understand measurement report. Instead of hand-drawn sketches, homeowners can see exactly where every dimension comes from.

This delivers clear benefits:

• Fair, accurate pricing

• Transparent invoices, even for non-technical customers

• Greater trust, fewer questions and fewer disputes

For master roofer Harnack, Airteam has become an integral part of his daily work:
from the first measurement to the final invoice – digital, precise and professional.

Airteam offers a 14-day free trial, allowing drone owners to explore the platform and generate their own 3D models.