What we measure
- Earth electrode resistance (fall-of-potential and clamp methods)
- Continuity of the air-termination system, down-conductors and protective conductors
- Earth fault loop impedance and equipotential bonding
- Condition of the SPD modules and of the connections at the test joints
- Visual inspection for corrosion, mechanical damage and changes to the roof
Documents you receive
- Test certificate with the results and a statement of compliance
- Installation record (for new installations)
- Remedial instructions for any non-conformities found
- A reminder when the next inspection is due, according to the site category
Maintenance contracts
For commercial buildings, hotels and solar parks we offer a maintenance contract: scheduled periodic inspections, replacement of SPD modules, extra inspections after severe storms and full record-keeping on your behalf.
Frequently asked questions
When is an inspection mandatory?
At commissioning, after repairs or changes to the roof, after a known lightning strike and periodically according to the site category. The interval is set by Ordinance No. 4 and EN 62305 – usually every 1 to 4 years.
Do you test installations you did not build?
Yes. Many of the inspections we carry out are on existing installations – for a change of ownership, for an insurer, for an acceptance committee or simply for peace of mind.
