Self-Cleaning Glass: Does It Actually Work?
2 December 2025 · 4 min read
Less window cleaning sounds great — but how well does self-cleaning glass really work? Here's the honest answer.
How the coating works
Self-cleaning glass has a special coating that does two things: it reacts with daylight to break down organic dirt, and it makes rainwater spread into a thin sheet that rinses the loosened dirt away, drying with fewer streaks. It works best on the outside of windows exposed to the weather.
It does not make windows maintenance-free, but it does reduce how often they need cleaning.
Where it helps most
The biggest benefit is on hard-to-reach glass — high windows, conservatory roofs and large panes that are awkward to clean. Because it relies on daylight and rain, it is less effective on very sheltered windows or interior glass.
It is usually specified as an upgrade when ordering new sealed units.
Is it worth it?
For accessible ground-floor windows the saving is modest. For tall, awkward or conservatory glazing, the reduced cleaning can be well worth the extra cost. If you are replacing units in hard-to-reach spots, it is worth considering.
We can quote self-cleaning glass as an option on your replacement units.
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