A Critical Safety Risk for Window Cleaners
In window cleaning, most risks are visible—ladders, roofs, uneven ground.
But one of the most dangerous hazards is often overlooked entirely: overhead power lines.
This is not a rare issue. It is present on everyday jobs across the UK, particularly in residential areas. And when something goes wrong, the outcome is often severe or fatal.
The Reality of the Risk
Electricity does not behave the way most people expect.
You do not need to touch a power line to be seriously injured. If equipment gets too close, electricity can arc (jump) through the air. This can happen instantly and without warning.
For window cleaners, the risk is significantly higher due to:
- Long, extendable water-fed poles
- Work carried out at height near rooflines
- Wet conditions increasing conductivity
- Regular exposure to properties with overhead cables
This combination makes overhead power lines one of the highest-risk hazards in the industry.
Where Things Go Wrong
Overhead cables are often positioned:
- Between properties
- Across driveways and rear gardens
- Above extensions and conservatories
Because of this, risk is introduced into otherwise routine jobs.
Common mistakes include:
- Failing to check above before starting work
- Raising poles into unsafe areas
- Setting up ladders beneath cables
- Continuing work despite limited clearance
These are not minor errors—they are life-threatening decisions.
HSE Guidance: What You Must Do
The UK’s Health and Safety Executive (HSE) provides clear guidance in GS6: Avoiding danger from overhead power lines.
The key rules are straightforward:
- Always assume overhead lines are live
- Maintain a minimum 3 metre safe distance (low voltage)
- Increase distance where necessary
- Avoid working directly under power lines
- Plan the job and assess risks before starting
If you cannot maintain a safe distance, the correct action is simple:
Stop work immediately.
Raising Standards in the Industry
For professional window cleaners, safety is not optional—it is a standard.
This means:
- Training staff to recognise overhead hazards
- Embedding checks into every job
- Ensuring equipment is used safely and consciously
- Creating a culture where stopping work is always acceptable
The difference between average operators and professional ones is often defined by how seriously these risks are taken.
Download the Toolbox Talk
To support WCA members and raise industry standards, we’ve created a one-page toolbox talk on overhead power lines, aligned with HSE GS6 guidance.
This is designed to be used with your team to reinforce awareness and safe working practices.
👉 Download the Toolbox Talk: Overhead Power Lines (PDF)
Final Thought
Overhead power lines are silent, easy to miss, and unforgiving.
They do not give second chances.
Taking a moment to look up, assess the risk, and follow safe systems of work can be the difference between a routine job and a life-changing incident.