How Long Do Bathroom Mirrors Last? UK Replacement-Cycle Data

Bathroom mirrors are rarely replaced because the glass breaks. They are replaced because moisture has reached the reflective coating at the edges and produced the black spotting that cleaning cannot remove. Furniture in Fashion's 2026 report explains the mechanism and names the specifications that resist it, from polished, bevelled or framed edges to bracket fixings that leave an air gap so the back of the mirror can dry. Ventilation emerges as the dominant variable, and Building Regulations Part F requires extract ventilation in bathrooms precisely because of this class of moisture problem. On mirrored cabinets the glass is often the last part to fail, with hinges, catches and swollen carcass edges going first, while illuminated units are usually replaced when a sealed lighting module or driver stops working rather than the glass. Lit mirrors must also suit the electrical zone they occupy under BS 7671. No average lifespan is quoted, because no citable UK dataset exists....