Custom mirrors are cut, edged, and installed to fit your exact space — instead of forcing your space to fit whatever sizes the big-box store stocks. That matters more than it sounds: walls aren’t square, outlets and sconces land in awkward spots, and a mirror that runs edge-to-edge over a vanity looks built-in in a way an off-the-shelf rectangle never will.
We’ve been cutting mirror at our La Verne shop since 1989 for homes across Glendora, San Dimas, Claremont, Covina, and Azusa, and most people who call us have the same handful of questions: what sizes are possible, what the edge options look like, how it attaches to the wall, and what it costs. This guide walks through all four — plus the bathroom-specific stuff that determines how long a mirror stays beautiful.
Where custom mirrors earn their keep
- Vanity walls. A single mirror cut wall-to-wall and counter-to-ceiling (or to a trim line) makes a small bathroom feel dramatically larger and never leaves awkward strips of drywall showing.
- Mirrored wardrobe doors. Sliding and bypass closet doors with mirror panels — a full-length mirror and a space multiplier in one. More on these below.
- Home gyms and studios. Large panels installed as a continuous wall. These are sized and mounted differently than bathroom mirrors, which is exactly why they’re a shop job.
- Framed and decorative pieces. We can cut mirror to fit an existing frame — including odd shapes, ovals, and arches — or replace the aged glass in a piece you love.
- Replacements. Matching a builder-era mirror that cracked or de-silvered, without redoing the whole wall.
Custom mirrors: the four choices that matter
1. Size and shape
Mirror is cut from large stock sheets, so within normal residential sizes the shape is up to you — rectangles, circles, arches, and clipped corners are all routine, and we cut precise notches and holes for outlets, switches, and light fixtures so the mirror fits around them cleanly. The one thing we’d steer you away from is guessing measurements off a tape held one-handed over a counter: for anything bigger than a powder-room mirror, professional measurement is included in the job and it’s what makes edge-to-edge installs possible.
2. Thickness
Residential wall mirror is typically 1/4″ — stiff enough to stay flat and true on a large span. Thinner mirror exists, but on a big vanity wall it can show a subtle funhouse ripple. If a quote seems surprisingly cheap, thickness is the first thing to ask about.
3. Edgework
| Edge / finish | The look | Where it fits |
|---|---|---|
| Flat polish | Clean, smooth, squared edge — the modern default | Frameless vanity and gym mirrors |
| Beveled | An angled border that catches light around the perimeter | Traditional baths, entryways, framed looks without a frame |
| Framed | Mirror set into wood or metal framing | Statement pieces, matching existing decor |
| Antique / tinted | Smoked, bronzed, or deliberately aged finishes | Bars, dining rooms, accent walls |
4. Mounting
Small mirrors can hang like art, but large custom mirrors are attached to the wall with a combination of mirror mastic (a glass-safe adhesive) and mechanical support — J-channel along the bottom, discreet clips, or both. Done right, the mirror becomes part of the wall: no visible hardware doing the heavy lifting, and no risk of a heavy panel relying on adhesive alone. This is the part of the job we’d most strongly recommend leaving to a shop; a 1/4″ mirror across a vanity wall is heavier than it looks.
“A custom mirror should look like the wall was built around it — because by the time we’re done measuring, it effectively was.”
Bathrooms: moisture is the real enemy
The reflective silvering on the back of a mirror is protected by backing paint, and the weak point is always the edges. In a steamy bathroom, moisture creeping under the edge causes de-silvering — the black or gray blotches you see creeping along the bottom of older mirrors. It’s cosmetic-only, but it’s not repairable; the fix is replacement. Modern mirror stock and proper sealing at install slow it down considerably, and keeping the exhaust fan running does the rest.
If you’re already updating the bath, it’s worth thinking about the glass as a package — mirror and enclosure together. We compared enclosure styles in framed vs. frameless shower doors, and the same polished, frameless look that dominates showers now is what most people choose above the vanity. In older houses around here, original medicine cabinets and thin builder mirrors are usually the first thing a bathroom refresh replaces — a theme we touched on in why older Glendora homes have window problems.
Mirrored wardrobe doors: the two-for-one
A bedroom rarely has wall space for a proper full-length mirror — but it always has a closet. Mirrored wardrobe doors put floor-to-ceiling mirror on rollers you use every day, bounce light around rooms that only get it from one window, and visually double small bedrooms. If your existing sliders are dated gold-framed panels from the 80s, swapping them for modern framed or frameless mirror doors is one of the fastest facelifts a bedroom can get.
What custom mirrors cost
Price follows square footage first, then edgework, shape complexity, cutouts, and installation. A powder-room mirror and a 10-foot gym wall are very different jobs, so we quote from real measurements rather than publishing a one-size number — the honest factors are the same ones we walked through in our 2026 glass replacement cost guide. Two things worth knowing: replacing mirror you already have is usually simpler (and cheaper) than people fear, and on new installs the measuring visit is part of the job, not an add-on. Text a photo of the space with rough dimensions to (626) 335-2900 and we can usually give you a ballpark the same day.
Bring us the frame, the sketch, or just the photo
Odd shape? Existing frame? Pinterest screenshot? That’s normal — most custom mirror jobs start as a photo and a couple of measurements. Bring it by the shop at 1782 N White Ave in La Verne or start a free estimate online.
The bottom line
A custom mirror costs a little more thought than grabbing a boxed one off the shelf — size, edge, mounting, and moisture protection — but it’s the difference between a mirror that hangs on a wall and one that belongs to it. Our mirror service handles measuring, cutting, edgework, and installation, and we’ve been doing it for East San Gabriel Valley homes since 1989. We serve Glendora, La Verne, San Dimas, Claremont, Covina, Azusa, Pomona, and Upland.
