Earth Resistance Testing
Earth electrode and earthing system resistance measured with calibrated equipment and recorded per test point.
View service →Periodic inspection and testing of structural lightning protection systems to BS EN 62305, with a test certificate.
A lightning protection system sits on the roof and down the walls for decades, mostly unnoticed. Tapes get disconnected during roof works, clamps corrode, test clamps go missing and earth electrodes dry out, and none of it is visible until a strike finds the weak point.
We inspect every air termination, down conductor, joint and test point, measure the earth resistance at each one, and issue a test certificate and report showing what passes, what doesn't and what to fix.

BS EN 62305Protection against lightning, parts 1 to 4BS EN 62305-3Physical damage to structures and life hazardBS 7430Code of practice for protective earthingBS 6651Withdrawn code of practice, still common on older installationsThe site address and the building size, or your last test certificate, is enough to price the job.
Priced per site, with multi-site estates grouped into efficient routes.
Every air termination, down conductor and earth inspected and tested on site.
Test certificate, results per test point, photos of defects and the next test date.
BS EN 62305-3 sets inspection intervals by protection level. Most UK sites test every year, and insurers often require it.
Yes. Systems installed to the withdrawn BS 6651 are still tested, and we tell you where they fall short of BS EN 62305.
No. Testing is done from ground level and the roof without any interruption to power or occupants.
Earth electrode and earthing system resistance measured with calibrated equipment and recorded per test point.
View service →Repairs to failed tapes, clamps, test points and earth electrodes, so your system passes its next test.
View service →Risk assessment to BS EN 62305-2 to show whether a building needs lightning protection, and at what level.
View service →A full survey and drawing of an existing lightning protection system when records are missing or out of date.
View service →Send the building address or your last certificate. We'll come back with a fixed price and the earliest date.