Why We Frame with Real Wood (And What Flat-Pack Frames Actually Are)

Most people buying a framed print never think about the frame itself. That's fair. You're buying the art. But the frame is the structure that protects it, defines it on the wall, and either ages beautifully over decades or starts looking tired within a year.

We frame everything in solid FSC-certified wood. Here's why that choice matters, what the alternatives actually are, and how to tell the difference when you're shopping.

What "flat-pack" actually means (and why the term is confusing)

You'll see "flat-pack frames" used in customer reviews and forum threads, but it isn't really industry terminology. People generally mean one of two things.

The first is a frame that ships disassembled, with the moulding lengths, glazing, backing board and fixings in a flat box for you to put together at home. The second, more common usage, refers to mass-produced ready-made frames where the moulding is engineered wood with a printed or wrapped finish, designed to be cheap, light and stackable in a warehouse.

Both have their place. A flat-pack frame can be a reasonable choice for a temporary poster in a rental. The problem is when people assume all framed art works this way, then end up with prints that arrive in two boxes, don't fit properly, and warp within a season.

What MDF actually is

MDF stands for medium-density fibreboard. It's made by breaking softwood and hardwood residuals down into fine fibres, mixing them with a resin binder (usually urea-formaldehyde), and pressing the mixture under heat into dense, uniform sheets.

For frame mouldings, that sheet is then cut into profile shapes and wrapped in a thin decorative layer. This wrap might be paper printed with a wood grain pattern, a thin veneer, or a foil. The result looks like wood from across the room. Up close, and especially after a year on a wall, it usually doesn't.

MDF isn't inherently bad. It's stable, cheap, and consistent. Cabinet makers use it constantly for painted carcasses where dimensional stability matters more than character. The issue is when it's used as a wood substitute and sold as something it isn't.

Are MDF frames toxic?

The formaldehyde question gets asked a lot. Older MDF released measurable formaldehyde over its lifetime, which is why the EU and UK tightened emissions standards significantly. Modern MDF made to E1 or CARB Phase 2 standards is considered safe for indoor use. It's not going to harm you hanging on a wall.

The environmental story is more nuanced. MDF often uses wood waste that would otherwise be discarded, which is genuinely good. But the resin binders are petroleum-derived, the finished product is very difficult to recycle, and most MDF cannot be repaired or refinished at the end of its life. So "eco-friendly MDF" is partly true and partly marketing.

What solid wood actually is

Solid wood frames are cut from a single species of timber. Oak, ash, walnut, maple, and tulipwood are the most common for picture frames. The moulding profile is shaped from a solid length, not built up from layers or wrapped over a core.

When the wood is FSC-certified, it means the timber has been traced from a forest managed to specific environmental and social standards: no clear-cutting of ancient forest, no displacement of indigenous communities, replanting requirements, and audited supply chains. It's a meaningful certification rather than a vague sustainability claim.

Solid wood moves slightly with humidity. That's a real characteristic to be honest about. In a well-built frame with proper joinery, that movement is barely perceptible and contributes to longevity rather than failure. In a badly built frame, it shows up as gaps at the corners.

Finger-jointed wood: the middle ground

Finger-jointed wood deserves a mention because it sits between MDF and full solid wood. Short offcuts of real timber are joined end-to-end using interlocking finger profiles and glue, then finished as a single moulding.

It's still real wood. It uses material that would otherwise be waste. It's more dimensionally stable than long single-piece mouldings because internal stresses are distributed across the joints. The downside is that finger joints can show through paint and stain unless the frame is fully painted in an opaque finish.

For a clear-finished oak or walnut frame, you want a single piece of timber. For a painted frame, finger-jointed is a perfectly sensible choice.

Solid wood frames vs MDF: what actually differs

The marketing copy on solid wood frames vs MDF tends to be vague on both sides. Here's the honest breakdown.

Appearance up close. Solid wood has grain variation, subtle colour shifts, and slight imperfections that catch the light differently across the length of the moulding. MDF with a wood-look wrap is uniform. From two metres away you might not tell. From thirty centimetres you always will.

Weight and feel. Solid wood is heavier and feels denser when you handle it. MDF can feel surprisingly heavy too because it's dense, but it has a more uniform, slightly plasticky finish under your fingers.

Joinery strength. Solid wood holds screws, pins and wedges far better than MDF. Frame corners are typically v-nailed or pinned, and in MDF the holding strength of those fixings degrades faster, especially after any flex. This matters most on larger frames where the weight of the print and glazing pulls on the corners.

Longevity. A well-made solid wood frame will last for generations. We mean that literally. Antique frames in museum collections are routinely a century or more old. MDF frames typically start showing wear (chipped wrap at corners, lifted veneer, swollen edges) within five to ten years of daily light exposure and seasonal humidity changes.

Repairability. Solid wood can be sanded, refinished, stained darker, or painted over. A scuff becomes a patina. MDF with a wrapped finish cannot be refinished. Once the wrap is damaged, the frame is essentially done.

Humidity. This is where competing claims get contradictory. MDF doesn't warp the way solid wood can, because its fibres are uniformly distributed and bonded. But MDF swells irreversibly if it gets damp, particularly at unsealed edges. Solid wood expands and contracts but returns to shape. In a normal indoor environment, both are fine. In a bathroom or a humid kitchen, neither is ideal, but a properly sealed solid wood frame handles long-term humidity better than MDF.

How to tell if a frame is real wood

You can usually identify a solid wood frame within a few seconds.

Look at the back and edges. Real wood has continuous grain that runs through the cut edge of the moulding. MDF shows a dense, sandy cross-section with no grain pattern. Wrapped MDF will show a seam where the decorative layer meets at the back of the profile.

Check the inside rebate (the L-shaped channel where the print sits). On real wood you'll see the same timber. On wrapped MDF you'll often see bare beige fibreboard because the decorative wrap doesn't extend into hidden surfaces.

Lift it. Solid hardwood has a particular density. MDF can feel surprisingly close in weight but the balance and resonance are different. Tap the side of the moulding. Solid wood gives a tighter, higher note. MDF gives a duller thud.

Read the product description carefully. "Wood effect," "wood-look," "engineered wood," and "composite" all mean MDF or similar. "Solid oak," "solid ash," "solid walnut" mean what they say. "FSC-certified solid wood" tells you both the material and the sourcing.

The manufacturing difference

For our framed art prints, the moulding starts as kiln-dried lengths of FSC-certified hardwood. The profile is shaped, the lengths are cut to size for the specific print, and the corners are mitred at 45 degrees.

The corners are then joined with v-nails driven from the back, which pull the mitre tight as they're inserted. The print is mounted with archival tape, backed with a rigid board, and fitted behind UV-protective acrylic glaze. Fixtures for hanging are attached. The whole thing ships in one box, properly assembled, ready to hang.

That last point matters more than it sounds. The biggest failure mode in framed prints from anywhere isn't the print quality or even the frame material. It's prints and frames shipped separately, or pre-assembled frames that warp because the glazing, mount and backing weren't fitted under the right tension. A frame that arrives ready to hang and stays flat for years is harder to manufacture than it looks.

What "museum quality" actually means

You'll see "museum quality" and "conservation grade" used loosely. The terms have specific meanings in the framing world.

Museum-quality glazing blocks 99% or more of UV light, which is the main cause of fading in inks and papers. We use UV-protective acrylic rather than glass because it's lighter, doesn't shatter, and offers better UV blocking than standard picture glass.

Conservation-grade mounting uses acid-free materials throughout (mount board, backing, tape) so the print isn't slowly degraded by acidic contact over decades. Our art prints are giclée-printed with pigment inks rated to last hundreds of years in direct sunlight under museum conditions. That rating only holds if the framing materials don't undermine it.

A premium print in a cheap frame with UV-passing glazing and acidic backing board will fade and yellow within years. The frame isn't separate from the longevity of the art. It's the system that keeps the art alive.

When MDF actually makes sense

We're going to take a position here, but we'll be fair. There are situations where an MDF frame is the sensible choice.

Temporary displays. A poster for a child's bedroom that will change in eighteen months. A rental flat where you don't want to invest in pieces you'll move on from. A trade show or event display.

Very low budget framing where the alternative is no frame at all. An unframed print taped to a wall ages worse than a cheap framed one.

Painted finishes in very specific colours where solid wood would show grain through the paint and you don't want that. Some interior schemes call for the flatness of a fully painted MDF moulding.

Beyond those cases, the value calculation usually points the other way. A solid wood frame costs more upfront and lasts so much longer that the cost-per-year drops below the MDF equivalent within a few years.

When solid wood is the obvious choice

Art you actually care about. A photograph of your family. A print that took you weeks to choose. Anything you plan to keep moving from home to home.

Larger sizes. The bigger the frame, the more the corner joinery is stressed by the weight of the glazing. Solid wood corners hold up far better at 70x100cm and above.

Rooms with character. Solid wood grain interacts with natural light, lamp light, and the textures around it. In a room with linen, ceramics, plants, real wood furniture, an MDF frame looks plasticky next to everything else. In a minimalist white room with hard finishes, it's less obvious.

Canvas alternatives. If you want a frameless or minimal look, a stretched canvas print on solid wood stretcher bars is often the better choice than a cheap frame. The canvas is the finished piece.

A practical decision framework

If the art matters to you and you want it to look right for decades, go solid wood. The price difference is real but smaller than you might think, especially compared to the cost of the print itself.

If you're decorating with intentionally temporary pieces, MDF is fine. Just be clear with yourself that you're buying for a season, not a generation.

If you're somewhere in between, look at finger-jointed solid wood frames or focus your budget on the pieces that are going on the walls you look at most. A few well-framed prints in the living room collection you actually use will do more for your home than a dozen cheap frames spread thinly.

Before you buy, check three things

Look for the words "solid wood" and a named species (oak, ash, walnut). Vague terms mean engineered material.

Check that the frame and print ship together, fitted, ready to hang. Separate shipping almost always means problems on arrival.

Find the glazing specification. UV-protective acrylic or museum glass tells you the maker is thinking about the art lasting, not just looking good in the listing photo.

Get those three right and the frame disappears into the background where it belongs, letting the art do the work for as long as you want it on your wall.