White patches, cloudy streaks or fine lines on shower glass can look alike, but they do not all have the same cause. Before paying for replacement glass—or trying a stronger cleaning product—it helps to establish whether the marks are mineral deposits, surface damage or scratches.
1. Hard-water deposits: marks sitting on the glass
Hard water leaves calcium and other mineral deposits as water droplets dry. These often show as white spots, streaks or a hazy film, especially near the bottom of the screen and around fittings. Deposits may respond to a suitable glass-cleaning method, although stubborn build-up can need professional cleaning. Always follow the screen manufacturer’s instructions: coated or treated shower glass may have restrictions on cleaning products.
2. Etched or chemically damaged glass: marks in the surface
If a cloudy area remains after appropriate cleaning, the surface itself may have been affected. Long-term deposits, unsuitable chemicals or abrasive cleaning can leave permanent-looking haze. Specialist polishing may improve some surface defects, but it cannot be promised to restore every screen. Coatings, textured or patterned glass, and the position and depth of the damage affect suitability.
3. Scratches: lines rather than cloudy patches
Scratches tend to follow a direction: vertical marks from repeated contact, curved marks from abrasive pads, or isolated lines from accidental scraping. Never assume a scratch is safe to polish simply because it looks fine. The depth, glass specification and surrounding area matter. Aggressive DIY abrasion can cause visible distortion or make the damage worse.
How to check your shower screen safely
- Look at the glass in daylight and from different angles. Note whether you see spots, a general haze or individual lines.
- Clean only a small area using the glass manufacturer’s recommended method and a clean, soft cloth. Avoid blades, scouring pads or mixing cleaning chemicals.
- Compare the cleaned area with the surrounding glass once it is dry. If marks remain, stop before trying harsher treatments.
- Check whether the screen has an easy-clean or other protective coating. Polishing can remove coatings and may be unsuitable.
When is professional restoration worth considering?
It is worth asking for an assessment where a large, otherwise sound shower panel has persistent surface marks or scratches and replacing the panel would be disruptive or expensive. If the glass is cracked, chipped at an edge, unstable, or otherwise unsafe, replacement or a qualified glazing assessment is usually the appropriate route instead.
For more information about the service, see our shower screen glass restoration page. We assess each panel individually and cannot guarantee that every stain, scratch or etched patch can be removed.
Send photographs for an initial assessment
Elite Glass Restoration covers parts of Buckinghamshire, Berkshire and Surrey, including Gerrards Cross, Beaconsfield, Windsor, Ascot and Virginia Water. Send a close-up of the marks, a wider photograph showing the whole screen, and your postcode through our free glass damage assessment form. If possible, include whether the glass has an easy-clean coating and what cleaning has already been attempted. We can then advise whether an on-site assessment is worthwhile.