CCTV Camera Cleaning: How to Keep Footage Clear
Safe cleaning, common causes of poor images, and when to call for a service
To clean a CCTV camera safely, only tackle cameras you can reach from the ground or a stable step. Use a soft microfibre cloth, lightly dampened with clean water or a gentle lens cleaner, and wipe the lens or dome without pressing hard. Avoid household sprays, kitchen roll and abrasive cloths, which leave streaks and fine scratches that show up badly at night.
Dirty lenses are one of the most common reasons footage looks worse than it did when the system was new. Pollen, road grime, salt near the coast and spider webs all build up gradually, so the change is easy to miss until you need a clear image and cannot get one.
We service and repair CCTV across Kent and South East London. This guide covers what you can safely do yourself, what the common image problems mean, and when cleaning will not fix the issue.
Where to Start on Your Own
Stay safe at height
Do not climb ladders to reach high cameras if you are not comfortable. Many cameras are mounted under eaves for a reason; leave those for a service visit.
Use the right cloth
A clean microfibre cloth is ideal. Paper towels and rough cloths can scratch lens covers and domes.
Clean gently
Dampen the cloth slightly with clean water or a lens cleaner and wipe in one direction. Do not spray liquid directly onto the camera.
Clear webs and foliage
Brush away webs with a soft brush on a pole and trim branches that have grown into the view or move in the wind.
Check the result at night
Look at live night footage after cleaning. Problems caused by dirt usually improve immediately.
Root Causes We Find Most Weeks
Dirt and grime
Traffic film, pollen and dust scatter light, giving a soft, washed out picture that worsens at night when infrared reflects off the dirt.
Spider webs
Infrared light attracts insects, which attracts spiders. Webs close to the lens glow at night and cause constant false motion alerts.
Scratched domes
Old or roughly cleaned domes develop fine scratches that cause glare. Cleaning cannot fix these; the dome cover needs replacing.
Condensation inside the camera
Fog inside the housing means a seal has failed. Cleaning the outside will not help and the camera may need repair or replacement.
Focus or lens faults
If a clean camera still looks blurry, the focus may have shifted or the lens may be faulty, which is a job for an engineer.
Cameras still not clear after cleaning?
We can service the system, clean high cameras safely and check what is causing poor images.
No call centres, a real engineer answers.
What Customers Describe on the Phone
Leave These Jobs to an Engineer
Keeping it from coming back
Include camera cleaning in a regular routine, particularly after spring pollen and during autumn when spiders are most active. A periodic professional service covers high cameras safely and checks recorder health at the same time.
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