Mirror Edge Treatments: Polished, Beveled, and Framed Edges Compared

The edge is the part of the mirror your eye and your hand both check first. The face of a mirror is the same from one shop to the next — silvering behind glass, cut to size. What makes one custom mirror look finished and another look like a cut piece of stock is what happens at the perimeter: a polished edge that disappears, a bevel that catches the light like a frame built into the glass itself, or an actual frame that sets the mirror off from the wall. Pick the edge before you finalize the size, because each one changes the finished dimensions, the mounting, and how the mirror will hold up where hands, water, and cleaning spray reach it every day.

Polished edge: the clean, modern default

A polished edge — sometimes called a flat polish — is the raw cut edge ground smooth and brought to a clear, glossy finish, with the sharp corners lightly eased so the mirror is safe to handle and to clean around. Nothing is added and nothing is taken away beyond that smoothing. From the front, the edge reads as a thin clean line, which is exactly why it is the standard for modern bathrooms: wall-to-wall vanity mirrors, mirrors that butt against tile or against each other, and installations where sconces, faucets, and cabinetry are supposed to carry the design, not the mirror.

A polished edge is also the most honest edge. Because there is no bevel and no frame hiding the perimeter, the mirror has to be cut square and sized right — gaps and out-of-square walls show. That is an argument for field measuring, not against the edge. Where two polished mirrors meet in a corner or run in a row, tight joints and aligned top edges are the whole look, and they only happen when the wall was checked in three places before the glass was cut. For most Los Angeles vanities we install, a flat polished edge with properly eased corners is the right answer, and it is the edge we detail on our custom mirrors page as the starting point for a clean installation.

Beveled edge: a frame ground into the glass

A bevel is a wide, angled cut ground around the face of the mirror, sloping from the full thickness at a line set in from the edge down toward the perimeter. Common widths run from about half an inch to an inch and a half or more on a large mirror. That angled band acts like a prism: it catches light, throws a bright line around the mirror, and gives a plain rectangle a finished, furniture-like presence without any wood or metal around it. It is a classic choice over a dresser, in a powder room, or on a single statement mirror where the mirror itself is the decoration.

Two practical points decide whether a bevel belongs on your mirror. First, the bevel changes the math: the overall size you order includes the bevel, so the flat, full-reflection field inside it is smaller than the stated dimensions — on a small mirror, a wide bevel can eat more of the face than you expect. Second, a bevel needs room to read. On a mirror that runs edge to edge between walls, tile, or cabinets, there is no visual space for the band to do its work, and the bevel mostly complicates the fit. Bevels also have to be ordered before fabrication — like every edge treatment here, they are finished work done before the mirror is installed, not something added later on the wall.

Framed edge: protection and a design statement

A framed mirror carries a separate border — metal channel, a slim contemporary metal frame, or a traditional wood frame — around a mirror whose own edge is usually simply polished or seamed underneath. The frame does three jobs at once. It defines the mirror as an object on the wall, which suits traditional baths, framed double-vanity setups, and rooms where the mirror should match cabinet hardware or fixtures. It covers the perimeter, so minor wall irregularities behind the frame are less visible than behind a bare polished edge. And it shields the edge — the most vulnerable part of any mirror — from the bumps, chips, and moisture creep that start at the perimeter.

That last job matters more than most people realize. Mirror failure in a bathroom rarely starts in the middle of the face. It starts at the bottom edge, where water sits, cleaner pools, and the silvering is closest to the air — the black edge creep homeowners notice years in is an edge problem first. A frame or a metal channel does not make a mirror waterproof, and a bottom channel that traps water can make things worse if it is not detailed and drained correctly. But a well-chosen frame, kept clear of standing water and wiped dry at the bottom rail, gives that vulnerable edge real protection. In high-traffic and gym settings, a framed or channel-set mirror also presents a less exposed edge to equipment and cleaning crews than a bare one.

How to choose, room by room

• Primary bath, wall-to-wall vanity: polished edge. It disappears, tolerates tight fits against tile and side walls, and lets the stone and fixtures lead. Run it as one piece where the wall allows, and measure the finished wall, not the framing.
• Powder room or single statement mirror: beveled edge, or a frame. There is wall around the mirror for the detail to read, and the mirror is meant to be looked at, not just used.
• Double vanity with two separate mirrors: framed or beveled. Separate mirrors need their own finished perimeter; two polished rectangles can work in a modern bath, but the edge choice is what makes them read as intentional.
• Gym, dance studio, or full-wall mirrors: polished edges, tightly butted, in channel or on clips, with safety backing where the setting requires it. Frames between panels would break the field and collect impacts; the edge work here is about alignment and safety, not decoration.
• Coastal and high-moisture baths: favor the edge you can keep dry. Whatever you choose, ventilation, a wiped-dry bottom edge, and keeping harsh cleaner off the perimeter will outlast any treatment choice.

What to tell your glazier before the mirror is cut

Give the finished overall size and say whether it includes a bevel, name the edge out loud — flat polish, bevel with its width, or frame with its material and finish — and flag every thing the edge has to clear: faucet height, sconce boxes, outlets, tile shoulders, and side walls. Once a mirror is cut and the edge is finished, changing the treatment is a new mirror, not an adjustment. A photo of the wall and three measurements (top, middle, and bottom, plus height in two places) let us confirm the edge and the fit before anything is fabricated.

The short answer

Polished is the clean modern default and the right edge for tight, wall-to-wall work. A bevel is decoration ground into the glass itself — beautiful on a mirror with wall around it, wasted on one with none. A frame defines the mirror, matches the room, and protects the vulnerable perimeter, as long as it is kept dry at the bottom. Choose the edge for the room and the fit first, then order the size to match. Send us your measurements and a photo of the wall, and we will confirm the edge, the size, and an exact quote before the mirror is cut.