Glass scratches are a common source of frustration — on shower screens, mirrors, glass splashbacks, patio doors and table tops. The first question is always: can this be repaired, or does the glass need to be replaced? The answer depends on the depth of the scratch, the type of glass, and the surface finish.
Types of Glass Scratches
Surface Scratches (Light)
Light surface scratches — the kind you can feel with a fingernail but that don’t catch deeply — are often treatable by polishing. Glass polishing uses cerium oxide or diamond pads to micro-abrade the surface, removing a very thin layer of glass and blending out the scratch. Results are excellent for true surface scratches on standard glass.
Deep Scratches and Gouges
Deeper scratches that catch a fingernail significantly, or that visibly refract light at an angle, are much harder to remove by polishing. Removing enough glass material to eliminate the scratch can distort the glass, create a visible ripple or flat spot, and affect the optical clarity of the panel. For deep scratches in large panels, replacement is often the more practical option.
Shower Screen Glass Repair
Frameless and semi-frameless shower screens are a common target for glass scratch repair. The scratches are often from squeegees, cleaning tools or jewellery. Light scratches on clear toughened glass respond well to polishing. However, many shower screens are installed in tight spaces that make polishing difficult, and the cost of professional polishing (£80–£200+) needs to be weighed against the cost of replacement glass panels.
Mirror Scratches
Scratched mirrors are more complex than scratched clear glass. The scratch may affect the glass itself, the mirror backing, or both. Polishing a scratch out of a mirror requires removing material from the front surface — but if the mirror coating on the back is also damaged, polishing alone won’t restore the reflection in that area. Small localised mirror scratches can sometimes be masked with mirror repair products, but this is rarely truly invisible.
Glass Splashbacks and Table Tops
Scratched glass splashbacks and table tops — particularly painted or coloured glass — are difficult to repair invisibly. If the scratch penetrates the surface and the coloured backing is affected, polishing only addresses the glass, not the colour loss. For painted glass, touch-up of the backing coat may be more effective than glass polishing.
When Is Replacement the Better Option?
Replacement makes more sense when: the scratch is deep and covers a large area, the glass is toughened or laminated (polishing may compromise integrity), the optical distortion caused by polishing would be visible, or the cost of repair approaches the cost of a new panel.
Get an Assessment
Shazam Repairs can assess glass scratches and provide an honest evaluation of whether polishing is likely to give a satisfactory result. Send photos for a no-obligation assessment.
