01
Protecting Buildings from Lightning Strike Damage
Lightning protection systems provide a controlled path for lightning strikes to reach earth safely, preventing damage to buildings and electrical systems. Systems comprise air terminals (strike points) mounted at high points on the structure, down conductors that channel current to earth, earth electrodes that dissipate charge into the ground, and bonding connections that prevent dangerous potential differences. When properly maintained, these systems can safely conduct currents exceeding 200,000 amperes without damage to the building or its occupants. However, corrosion, physical damage, loose connections or inadequate bonding can compromise system effectiveness, leaving buildings vulnerable to fire, structural damage and electrical system destruction.
02
Financial and Safety Risks of Lightning Protection Neglect
Buildings without effective lightning protection face severe consequences from direct strikes and near-miss events. Lightning can cause catastrophic fires, structural damage from explosive heating of moisture in building materials, and destruction of electrical and electronic systems through voltage surges. Insurance policies for buildings with lightning protection systems require evidence of regular inspection and maintenance, and claims arising from lightning damage may be refused if systems are found to have been neglected. The cost of repairing lightning damage typically far exceeds the cost of preventative maintenance, particularly where business interruption, data loss and equipment replacement are factored in. Regular surveys identify deterioration before system performance is compromised.
03
What Professional Lightning Protection Surveys Cover
Comprehensive lightning protection surveys combine visual inspection of all accessible system components with electrical testing to verify performance. Inspections check air terminals, down conductors and earth electrodes for corrosion, physical damage, loose connections and adequate spacing. Electrical tests measure earth resistance to confirm that earth electrodes can effectively dissipate lightning current, and continuity tests verify that all conductive paths remain intact. Surveys also assess whether building modifications, roof-mounted equipment or nearby structures have affected system design assumptions or created new vulnerabilities. Quantec provides detailed survey reports compliant with BS EN 62305, including photographic evidence, test results and clear recommendations for any remedial works required to maintain effective protection.
.png)
