If you want light in a bathroom without giving the neighbours a show, privacy glass is the answer. It is a simple idea done in lots of ways, and knowing your options helps you get the right balance of daylight and discretion. Here is a plain-English guide to obscure and privacy glass and where each type works best.
Privacy glass, also called obscure or patterned glass, is glazing that lets light through while blurring or blocking the view. Instead of clear glass you get a textured, frosted or patterned surface that scatters the light so shapes and detail cannot be made out from the other side. It still brightens the room; it just hides what is going on inside.
You will find it most often in bathrooms, en-suites, downstairs toilets, front doors, side panels and any window that faces a path, a neighbour or the street.
There are a few common ways to get that frosted, private look:
Within a sealed unit, the obscure pane is simply used in place of a clear one, so you still get all the insulation of normal double glazing.
In the UK, obscure glass is usually graded on a privacy scale, commonly from level 1 (the least private, lightly textured) up to level 5 (the most private, where almost nothing can be seen through it). Choosing the right level matters:
If you are glazing a bathroom that faces the street, most people go for the higher levels. For a landing or a window with a bit of distance from prying eyes, a mid level often looks lighter and more attractive.
Because it is a straightforward glass swap, you can specify obscure units on new windows and doors at no great difficulty. It is worth deciding room by room when planning replacement uPVC windows, since you often want clear glass in living spaces and obscure glass only where privacy counts.
It is worth clearing up a common mix-up. Obscure glass hides the view but does not, on its own, make glass stronger or more secure. For security you want toughened or laminated glass, which can be combined with an obscure finish. If security is a concern on a vulnerable window or door, ask about laminated obscure options rather than relying on the pattern alone.
Obscure glass usually costs a little more than plain clear glass, but not dramatically so. As of 2026, choosing a patterned or frosted unit over clear typically adds a modest amount per window or door, with more decorative or specialist designs costing more. Because it depends on size and pattern, the best approach is to ask us for a quote for your exact windows.
They are different names for the same thing: glass that lets light in but blurs or blocks the view. You may also hear it called patterned or frosted glass.
Most people choose a higher level, around 4 or 5, for full privacy in a bathroom or en-suite, especially if the window is overlooked or faces a path or road.
Yes. It scatters light rather than blocking it, so the room stays bright while the view is hidden. That is the whole point of it over a solid panel or blind.
Yes. The obscure pane simply replaces a clear one inside the sealed unit, so you keep all the insulation of normal double glazing along with the privacy.
Not by itself. It hides the view but does not add strength. For security, choose toughened or laminated glass, which can also be given an obscure finish.
Deciding which rooms need privacy glass? Download our latest brochure to see the patterns and options, or request a free quote and we will help you spec it.