Reliable, Compliant, and Certified Lightning Protection Testing Services.
Lightning protection testing that keeps you fully compliant
Lightning protection systems are essential for safeguarding your building, its occupants, and electrical systems from the damaging effects of lightning strikes. To remain effective, and compliant with UK law, your systems must be professionally tested and certified at least once every 12 months.
At Sky Height Safety, we provide comprehensive lightning protection testing, inspection and certification across the UK. Our qualified engineers ensure your systems remain safe, compliant and fully operational in line with BS EN 62305 and the Electricity at Work Regulations 1989.
Why Lightning Protection regulations & Testing Matters
A single lightning strike can cause severe structural damage, fire, or equipment failure. An effective lightning protection system safely channels this energy to earth, protecting your property and everyone inside.
Regular inspection and testing are required to:
- Ensure the system conducts lightning safely to an earthing point
- Identify damage, corrosion, or loose connections
- Verify compliance with BS EN 62305 and BS 6651
- Maintain insurance validity
- Provide a valid certificate of compliance
If your system has been altered, repaired, or struck by lightning, additional testing is required to confirm continued safety and compliance.
Testing Frequency & Legal Requirements
Under UK legislation, lightning protection systems must be inspected and tested at least every 12 months. In some cases, more frequent inspections are recommended.
- Annually (to meet the Electricity at Work Regulations 1989 and BS EN 62305
- After structural alterations or repairs
- At varying times of the year (to measure seasonal earth resistance variation)
- After a lightning strike
After a satisfactory inspection, you’ll receive a Lightning Protection Certificate of Compliance, confirming your system meets current standards. If faults or deterioration are found, we provide a full report detailing the required repairs or recertification testing to bring your system back to full compliance.
Our Lightning Protection Testing Procedure
Our certified engineers carry out a full visual and electrical inspection using specialist testing equipment. Every inspection follows BS EN 62305 standards and includes:
Visual Inspection
We inspect all accessible components for damage, corrosion and wear, including:
- Air terminals (lightning rods)
- Down conductors
- Bonds and connections
- Earth termination systems
Electrical Continuity Testing
We verify that all components are properly connected and capable of safely conducting lightning current to earth, using resistance testing between conductors and bonding points.
Earth Resistance Testing
Using the ‘Fall of Potential’ method, we measure the resistance of each earth electrode and the overall system. Readings should ideally be below 10 ohms for optimal performance.
Surge Protection Device (SPD) Testing
Where applicable, SPDs are tested to ensure full operational efficiency and continued protection of sensitive electronic equipment.
Once testing is complete, a detailed compliance report and certificate are issued, outlining all findings, measurements, and any recommended remedial actions.
Why Choose Us?
- Over 20 years of experience in height and electrical safety
- Fully qualified engineers trained in BS EN 62305 and HSE regulations
- Nationwide testing, inspection, and certification
- Fast, reliable reporting with photographic evidence
We combine our specialist height safety knowledge with technical electrical expertise to deliver testing services that are both safe and precise – ensuring every component of your system performs as intended.
Frequently Asked Questions
Who can test lightning protection systems?
Only a competent, qualified engineer trained in BS EN 62305 should carry out testing.
How often should lightning protection be tested?
At least once every 12 months, and after any lightning strike or any major alteration.
Do I need a certificate?
Yes. Certification demonstrates compliance with the Electricity at Work Regulations and may be required by your insurer.
What if my system fails the test?
We’ll provide a detailed report outlining the faults and recommended remedial works before re-certification.