The coating does more work than you think

When most people choose a paper stock, they look at the weight. A 350gsm card must be better than a 300gsm one, right? Weight tells you how thick and stiff a sheet feels, but it says almost nothing about how your design will actually look once it is printed. That job belongs to the coating.

Two cards can both be 350gsm and behave nothing alike. One will hold a photograph sharp and vivid, the other will drink the ink in and leave it slightly soft and matte. Neither is wrong. They are simply suited to different jobs, and once you understand the difference you will make better decisions about everything from business cards to packaging.

Coated, uncoated and the shades in between

Paper starts life as fibres pressed into a sheet. Coated stock then has a thin layer of clay or mineral pigment applied to the surface, which fills in the tiny pits between fibres and gives you a smooth, sealed face. Uncoated stock skips that step, so the fibres stay exposed and slightly porous.

Within coated papers you have a few useful options:

• Gloss — shiny and reflective, with the brightest, punchiest colour reproduction. Brilliant for photography, less comfortable for long passages of text, and prone to showing fingerprints.
• Silk or satin — a gentle sheen rather than a glare. The reliable all-rounder for brochures, leaflets and catalogues, because it flatters images without tiring the eye.
• Matte coated — smooth but non-reflective. It feels considered and premium, though it can scuff a little more easily in transit.

Uncoated papers come in their own family: smooth bond for letterheads, textured laid and wove for invitations, and the warmer, slightly flecked recycled boards that many small businesses now prefer.

How ink behaves on each

On coated stock, ink sits on the surface and dries there. Dots stay crisp, fine detail holds, and colour appears rich and saturated. Whites are brighter, so contrast is stronger and photographs genuinely pop. The trade-off is that heavy solid areas of ink sit on top of the sheet and can scuff or mark if the printed item is handled roughly.

On uncoated stock, ink wicks down into the fibres. This is called dot gain, and it means printed dots spread slightly as they dry. Colours end up softer, warmer and a little more muted, and very fine detail can fill in. A vivid electric blue may read as a calmer mid-blue. That is not a fault, it is the character of the paper, but it does mean you should not expect a screen proof to match.

The practical upshot: if colour accuracy and photographic impact matter most, go coated. If you want warmth, texture and a calmer editorial feel, uncoated will serve you better.

Writing, signing and finishing

This is where the choice becomes genuinely practical. Uncoated paper accepts ballpoint pen, pencil, fountain pen, rubber stamps and handwritten notes without fuss. Coated paper does not. Ink from a standard pen can sit on the surface, smear, or refuse to dry at all.

So anything designed to be written on should be uncoated: appointment cards, order forms, menus that customers tick, invoice books, letterheads, compliment slips and anything headed for a printer in the office.

Coated stocks come into their own for finishing techniques. Foil blocking, spot UV varnish and embossing all adhere more reliably and crisply to a sealed surface. They also fold better, but only if your printer scores the sheet first. Folding a heavy coated card without a score line will crack the coating along the spine and expose white fibres underneath, which looks cheap on an otherwise smart piece.

Matching stock to the job

• Business cards — 350 to 450gsm coated silk for a clean modern finish, or a heavy uncoated board if you want people to be able to jot a note on the back.
• Leaflets and flyers — 130 to 170gsm. Gloss for bold offers and big images, uncoated or silk for something more considered.
• Brochures and menus — silk or matte coated around 200 to 250gsm for interiors, with a heavier cover. Uncoated menus feel lovely but show every thumbprint and spill.
• Letterheads — uncoated 100 to 120gsm, every time. They need to run through office printers and take a signature.
• Packaging — coated board for shelf presence and vivid colour, uncoated kraft or recycled board for a handmade, natural feel.
• Invitations and certificates — heavy textured uncoated stock, which takes letterpress and foil beautifully.

Before you place the order

Ask your printer for a swatch book or sample pack. They are usually free, and holding the stock in your hand tells you more in ten seconds than any specification sheet. If colour matters, request a proof on the actual paper rather than trusting a screen, because a monitor is backlit and paper is not.

Think about how the piece will be used. Will anyone write on it? Will it sit on a café table in sunlight, or be pulled in and out of a wallet for two years? Does it need to survive a rainy doorstep? A heavier sheet is not automatically a better one, and a 450gsm card can feel unwieldy in a jacket pocket.

Finally, if you are considering recycled uncoated stock, remember it is more absorbent than virgin paper. Colours will shift warmer and slightly duller. Once you know that, you can design for it deliberately, choosing deeper, richer tones rather than fighting for a brightness the paper was never going to give you.