Protect your building the right way with DEHN UK

A recent project of ours perfectly highlighted the importance of sticking to standards‑based lightning protection design, especially when dealing with structures that have challenging access and safety constraints.

A specialist contractor had initially proposed a solution not recognised under current British or international standards, largely due to concerns around access, aesthetics, and installation practicality - this is where DEHN UK do things the right way.

By creating a detailed 3D model of the structure and applying the rolling sphere method, we were able to accurately map out the lightning protection zones and place air‑termination devices only where they were genuinely required. This significantly reduced access needs, avoided unneeded work at height, and cut down on unnecessary costs.

Furthermore, by carrying out precise separation distance calculations, we minimised the number of interconnections and down-conductor routes, ensuring components were installed on a strictly needs basis. The result?

• A fully BS EN IEC 62305-compliant solution

• A cost-effective design using the minimum number of components

• Substantially reduced time working at height

• A safer, more efficient installation that meets both engineering and aesthetic requirements

This project is another strong reminder that, when it comes to complex structures, the rolling sphere method remains the most robust, proven, and standards-aligned approach - far outperforming non‑standard alternatives.

If you’d like to discuss 3D lightning protection modelling or compliance-based design approaches, our technical team is always here to help.