To replace a medicine-cabinet mirror, first identify whether the damaged part is a replaceable glass panel, a complete mirrored door or part of an illuminated assembly. Those are different jobs. A correctly matched replacement door may restore a good cabinet, while a new cabinet can add the lighting and storage the old one lacks.
Start with the reason for the change. If the surface is simply hazy, try the appropriate cleaning approach in our hazy mirror guide. Cracks, chipped edges, damaged hinges or failing backing need a different solution.
Glass panel, door or whole cabinet?
On a small screen, swipe the table to compare all columns.
| Existing condition | Useful route |
|---|---|
| Good cabinet, damaged replaceable panel | Ask for a matching glass specification and fitting method. |
| Damaged mirrored door or hinges | Check whether a complete compatible door or hinge set is available. |
| Swollen structure, poor layout or worn fittings | Compare a complete replacement cabinet. |
| Integrated lights or demister in the door | Arrange model-specific assessment before dismantling it. |
Do not assume every cabinet must be removed from the wall or that its mirror simply unscrews. Some doors combine glass, backing, hinges and electrical components. Match the cabinet model and construction before ordering a replacement part.
The measurements that matter
- Record the outer door width and height as well as the glass size.
- Check glass thickness, edge finish and how the panel is retained.
- Include hinge positions, opening direction and clearance to taps or adjacent walls.
- For a full replacement, measure the wall footprint and cabinet depth, including the open doors.
A larger or heavier glass panel can change the load on hinges. A glazier or cabinet supplier can help identify a suitable replacement instead of treating a generic mirror as a universal fit. Never tap the glass with a mallet to force it into alignment.
When a complete upgrade makes more sense
50 × 70 cm frontlit Bluetooth mirror cabinet — £269. Add storage, lighting towards your reflection, anti-fog and audio in one compact unit. Its 13 cm depth is a useful measurement when replacing an old shallow cabinet.
80 × 70 cm illuminated dual-speaker cabinet — £369. A broader mirrored front and storage arrangement for a larger basin area. Compare the full dimensions and door clearances with the old cabinet, rather than assuming the new fixings will reuse existing holes.
50 × 66 cm walnut-look mirrored storage cabinet — £169. Choose a warmer furniture finish when storage and a clear reflection are the priorities. Its internal lighting serves the cupboard; it is a different effect from lighting around the mirror face.
Prices and stock checked on 27 October 2026. Listed prices are before any checkout promotion.
Plan removal and fitting together
Empty the cabinet and arrange support for the door and glass before any fittings are released. Glued mirror panels need an appropriate removal method; do not force a knife behind fragile glass. If the cabinet is powered, arrange safe electrical isolation and connection through a qualified electrician.
If you already own the mirror cabinet with a digital display, use its own construction details when requesting parts. Our guide to framing a mirror in place applies to decorative changes, not to repairing damaged cabinet doors.
Choose what will make the routine better
Replace the part when the cabinet still does its job and a compatible repair is worthwhile. Replace the cabinet when more usable storage, better lighting or a different size would improve the bathroom every day. If the issue is the light rather than the glass, read LED mirror flickering causes before buying a whole new unit.