Bathroom Mirror Edge Corrosion: 18-Month Humidity Test of 12 Models

Bathroom mirrors fail at the edge, not in the middle, and our analysis concludes that edge corrosion is a ventilation and sealing problem rather than a glass quality problem. We state plainly that no eighteen month humidity test of twelve models was carried out for this report, so no scores or rankings are published: instead we explain the failure mechanism and the conditions that drive it. Moisture reaching the exposed cut edge degrades the reflective coating behind the glass, producing black spotting that advances inwards and cannot be cleaned away because it is not on the surface. We compare frameless, sealed edge, framed, cabinet and demisting constructions by how exposed the vulnerable edge is, and set out why UK bathrooms, often small, internal and intermittently heated, create ideal conditions for the damage. Furniture in Fashion also covers placement, cleaning practice and the clearances that keep splash away from the lower edge....