Camera din spate

There's a bench along the back wall with a felt mat on it gone grey with handling, and scattered across the felt: corners of gesso moulding, a curl of acid-free tissue, a rectangle of window-mat board with a bevel cut clean through it, cream on the face and a startling white where the blade has exposed the board's own core, like the difference between a tan and the skin underneath it. Nobody's manning the bench right now. A radio somewhere is playing something with too much reverb on it, turned low, the kind of station nobody actually chose.

This room doesn't have the hush the two front galleries have. It's got a compressor cycling on and off, a rack of glass leaned at an angle against a padded wall, a mat cutter bolted to a bench with a steel straightedge worn silver along one long edge from years of a blade riding it like a train track. Boxes of hardware, D-rings and wire, stacked by size. A tape measure clipped to a belt hanging off a nail. It smells of dust and something faintly solvent, and under that, glue.

I watch someone cut a mat, because there's someone here after all, come back with coffee, gloves already on. The blade goes in at an angle, not straight down — forty-five degrees, so the cut edge, the bevel, catches the light and throws a thin white line around the opening instead of a flat dead one. She measures twice before she cuts once, which is the one cliché in this whole room that turns out to be true every single time. The border comes out at two and a half inches on three sides and just over three on the bottom — not a mistake, a habit, the bottom always a little heavier than the rest, because a mat cut dead level on all four sides tricks the eye into feeling the image slide downward, and nobody wants their painting sliding. She doesn't explain any of this. She's done it enough times that explaining would take longer than just doing it right.

Then she picks up two pieces from the rack without asking what I want to know, which tells me she's watched other people stand here wondering the exact same thing. In one hand, a small oil study, thick paint, a visible ridge where the brush changed direction and never got smoothed out. In the other, a print on paper, flat, matte, a photograph reproduced. She holds the oil up near a sheet of glass — doesn't put it behind it, just holds it close — so I can watch the glass throw the room back at the paint, a soft double image of the strip lighting sitting right on top of the impasto, killing the ridge stone dead, turning texture into reflection. Then she sets the print into a mat, slides both behind the same glass, and the paper just sits there being legible, protected, the mat's bevel holding it a hair off the surface so it can't stick if the room ever gets damp. Same glass. Opposite effect. The paint didn't need protecting and the glass made it worse. The paper needed protecting and the glass, this time held slightly clear by the mat instead of resting flat on the sheet, did exactly its job.

I think of a painting I saw once in a house that should have known better, sealed behind glass in a frame that looked expensive, gone slightly milky at the center where damp had gotten in and had nowhere to go, trapped by the very thing meant to keep it safe. Nobody in that house did anything wrong on purpose. They just did the instinctive thing, the thing that protects a photograph, and pointed it at paint, which doesn't want protecting the same way — wants to breathe and cure and be looked at without a pane of something reflective standing between it and the room.

So here's the flat rule, stated once, no hedge: glass belongs on paper and never on paint. Everything else — mat width, bottom weight, whether you spend twenty percent more on the coating that also kills the glare — is arithmetic you can do once you've accepted the one rule that isn't arithmetic at all.

She's back at the mat cutter before I've even finished the thought, blade going in at its steady forty-five degrees, and the offcut she peels away curls once and lies still on the felt, right next to all the others exactly like it.

Three things people ask me, standing at this bench

Should an oil painting be framed under glass?

No. Oil keeps curing for months after it's touch-dry, and a sealed cavity behind glass traps whatever it's still giving off, along with moisture the canvas will happily hold onto. Glazing also flattens the one thing a painting has that a print doesn't — the physical ridge of paint — into a reflective sheet that competes with the room's own lighting instead of showing you the surface. The one exception is oil or acrylic done on paper or thin card, where the support, not the paint, is what needs the glass.

How wide should the mat be?

Wider than the frame moulding, as a habit worth keeping — a frame under two inches wants a mat of two and a half or more. Two inches suits small work, two and a half to three suits medium, three to four suits anything large enough to need the extra air. And cut the bottom ten to twenty percent heavier than the other three sides; equal borders make the image look like it's sliding out of the frame, and a slightly heavier foot corrects an illusion most people never consciously notice, only feel.

How much does this actually cost, realistically?

More than the flat-pack option and less than people brace themselves for. Fixed-size frames from a place like IKEA run under fifty dollars and include a mat and glazing, which is a genuinely honest deal for a print. A custom job from an independent framer typically lands between seventy-five and two hundred and fifty dollars depending on size, with conservation glass adding twenty to sixty on top of that. Our own period frames, computed to size rather than picked off a shelf, run in the low hundreds for a mid-size piece, shipping already inside the number rather than added at the end. None of that touches the antique market, where a real period frame averages over two thousand dollars and the record sits past a million — a separate hobby, not a framing decision.

Pricing and sourcing

Sizing rules, condensed:

• 80/20 rule: the artwork should occupy roughly 80% of the total framed area; frame and mat, combined, the remaining 20%.
• 57–75% wall rule: the finished framed piece should span 57–75% of the wall or furniture beneath it.
• Mat width: 2 in (5.1 cm) for small work, 2.5–3 in (6.4–7.6 cm) medium, 3–4 in (7.6–10.2 cm) large; mat wider than frame moulding; bottom border 10–20% heavier than the other three sides (the "weighted bottom").
• Glazing: standard glass/acrylic blocks roughly 45% UV; conservation-grade UV glass blocks ~99% and costs 20–30% more than standard; museum glass adds anti-reflective coating on top of the same 99% UV block and costs 2–3× standard — buy UV first, anti-reflective second.

How a frame price is worked out: the price is calculated per order rather than pulled from a fixed lookup table. It factors in the framed piece's overall size (width, height and moulding profile, which sets the shipping volume) and the length of moulding needed for the perimeter. Larger pieces above roughly 105 cm on a side qualify for a built-in kit discount of about 23–30% off the standard rate.

Price benchmark, 50×70 cm / 16–20 in class, all-in where stated:

Related on ArtsDot.com

• Want to see what a ridge of paint that refuses to lie flat actually looks like? Van Gogh's Bedroom in Arles is the textbook case, and exactly the kind of surface that glass would flatten into a mirror.
• Nobody built a career on impasto highlights quite like Rembrandt — go look at how much of his best work lives in the ridges, not the pigment underneath them.
• If you're still deciding between a print and something with a ridge of its own, our own guide walks through hand-painted oil versus giclée honestly, no thumb on the scale.
• Curious what actually happens between a commission and the box on your doorstep? The Art of Patience covers the process end to end.
• The framer in this piece is one habit among many — The Frame as Argument is the fuller case for why the moulding you pick is never a neutral decision.
• If a piece is worth framing right, it's worth being able to prove what it is — here's how our certificates of authenticity work.
• And if the framed piece arrives and it just isn't right in the room, that's what the 100-day money-back guarantee is for — no back room negotiation required.
• Shipping something framed across a border is its own small logistics puzzle; our international shipping guide spells out how we handle it.

Sources

Fine Art Conservation Laboratories, "Should I Put Glass In Front Of My Painting?"; Tate/conservation summaries on glazing trade-offs; Austin Gallery, "How Wide Should a Picture Mat Be?"; American Frame, "Playing with Proportions"; Tru-Vue on Museum Glass; HomeGuide, "How Much Does Custom Picture Framing Cost?"; Framebridge pricing page; IKEA RÖDALM product listings; 1stDibs antique gilded frame listings; Antiques and The Arts Weekly on the Eli Wilner collection.