Uncoated vs Coated Paper Stock: Know the Difference

The main difference is a mineral layer. Coated paper has one and uncoated paper doesn’t, and that changes how ink sits on the sheet. On coated stock it stays on top, so photos come out sharp and colors look saturated. On uncoated stock it sinks into the fibers, which gives you a softer, more natural sheet that takes a pen.

Photo-driven print usually goes on coated stock. Text, handwriting and anything people will handle tend to do better on uncoated.

Matte and silk sheets confuse a lot of people because they look low-sheen but are still coated. Between them, the two families carry the overwhelming majority of commercial print projects, according to Domtar.

One common claim is that coated stock avoids dot gain. It doesn’t, quite. An SPIE study (Namedanian et al., 2014) measured higher physical dot gain on coated paper but higher total dot gain on uncoated, because light scattering inside the sheet adds optical dot gain.

What Is the Difference Between Uncoated and Coated Paper Stock?

Here is how the two compare on the things that matter most when you place an order.

How Coated Stock Is Made

All paper starts out uncoated. At the mill, a white mineral coating goes onto the base sheet, and rollers then polish it flat and fill the small pits between fibers. Patent filings for coated printing paper name kaolin clay and calcium carbonate as the main pigments, with a latex binder holding them to the sheet.

The result is a less porous surface. Domtar describes coated sheets as sealed, which restricts ink absorption and lets the ink form a crisp, defined dot.

Coating can go on one side or both. C1S sheets have a single printable face, and the other face still takes a pen, which is why Smartpress points to this option when people need to write on the piece. C2S sheets are sealed on both faces and are the usual pick when both sides carry print.

What Counts as Uncoated Stock

Uncoated paper is just paper in its default state. It isn’t a special grade.

Printers sell it as bond, offset, card or newsprint (a wider look at paper types used in print design shows how these sit beside coated grades).

Smoothness separates good uncoated stock from poor. Domtar ties it to the feel of the sheet and to ink holdout, which matters most on heavy solids and metallic inks.

Which Finishes Does Each Stock Come In?

Coated stock runs from high-shine to nearly flat. Gloss has the highest sheen, silk and satin sit a step below it, matte is flat with very little sheen, and dull is smooth with low gloss.

Uncoated stock offers surfaces rather than sheens. Smooth, vellum, wove and laid are the usual ones. Smooth is plain and uniform, while laid shows textured lines. A longer guide to paper finishes covers the specialty textures.

Matte is where people get tripped up. Matte stock is still coated, and Smartpress notes that its Uncoated Smooth sheet has a uniform surface that can pass for coated when it is not.

Matt and silk coatings lean on calcium carbonate. A patent filing for matt and silk coating compositions puts it at 50% of the coating at minimum, with a 70% carbonate to 30% clay split common.

Matte also forgives more than gloss does. Fingerprints, smudges and dust show less, according to Knight Printing.

A coating finish is a different thing from a coated paper. UV coating and soft-touch laminate go on after printing, while the coating on a coated stock goes on at the mill, and the choice between varnish and lamination is its own decision.

How Ink Behaves on Coated and Uncoated Stock

Coated stock keeps ink on the surface. Uncoated stock lets it soak into the pores, and that changes dot gain and drying time. Rub resistance suffers too.

Dot Gain Explained

ICC registry data sets the tone value increase aim at 16% for PSO Coated v3 and 22% for PSO Uncoated v3, both under the same 300% total ink limit.

Tone value increase is the standards term for dot gain, the growth of a halftone dot between film and print. Part of it is physical: ink penetrates and spreads, so the real area of the dot changes. The rest is optical, caused by light scattering inside the paper around the dot edge.

Namedanian and colleagues (SPIE, 2014) measured both on coated and uncoated offset prints. Ink sank into the pores of the uncoated sheet and formed uneven dots. On coated stock it spread across the surface and covered a larger area, so physical dot gain was higher on coated.

Total dot gain was still larger on uncoated paper, because optical dot gain was larger there.

Printer FAQs often say dot gain is usually not an issue on coated stock. The measurements say it exists there too, just in a smaller total. Treat it as lower, not absent.

Can You Write on Coated Paper?

Yes, but expect smudging.

Ballpoint and other pen inks dry slower on coated stock and smudge more easily. On the press side, coated stock needs less printed ink for the same richness.

Uncoated stock accepts pen and pencil readily and feels dry sooner, since the ink absorbs. The catch is that printed ink rubs off more easily.

Wear goes the other direction. WCP Solutions notes that coated paper is less susceptible to wear over time.

Why Color Prints Differently on Each Stock

Paper white and ink holdout change how the same file looks on press, so the standards define a separate reference print condition for each paper type. A file separated for coated stock and printed on uncoated comes out darker and less precise.

Reference Profiles by Paper Type

ISO 12647-2 splits offset paper into types, and each type gets its own reference print condition. Profiles record how CMYK process inks print under each one.

Fogra39 (ISO Coated v2) covers paper types 1 and 2, gloss and matt coated. For uncoated work, Fogra47 (PSO Uncoated ISO12647) is built on paper type 4, uncoated white offset at 115 gsm, and Fogra52 (PSO Uncoated v3) covers wood-free uncoated with total ink at 300%.

The paper white differs a lot between type 4 and type 5, at CIELAB 95; 0; -2 against 93.5; 2.5; -10 (Fogra data listed by proof.de). The type 5 white is darker but bluer, which is what a heavy dose of optical brighteners does.

Fogra, ECI and bvdm presented Fogra51 and Fogra52 on 30 September 2015 for ISO 12647-2:2013 (Intergraf). BookMachine (2018) describes Fogra47 as the older set, characterized on papers with minimal brighteners, which is why Fogra47 proofs show a yellow cast against today’s brighter uncoated sheets.

If your printer still proofs uncoated work to Fogra47, ask why.

In the US, Idealliance’s GRACoL 2013 sits inside the ISO/PAS 15339 family. CRPC6 covers premium coated printing, and CRPC3 covers typical premium uncoated work. GRACoL 2013 (CRPC6) uses total ink of 320%, with tone value increase of 16% CMY and 19.1% K (ICC registry).

Pantone Coated and Uncoated Swatches

The same Pantone color looks different on coated and uncoated paper. X-Rite’s Pantone guidance attributes most of that gap to how the ink reacts to the paper, not to ink film thickness.

In the Pantone matching system, C means gloss coated (matte still counts as coated stock) and U means uncoated.

Pantone 293 C and 293 U share one formula, equal parts Reflex Blue and Process Blue, yet look very different. PIWorld reports that 185 U holds close to 185 C while 710 U drifts away from 710 C.

Printers order the ink by number, not by suffix. The suffix only previews how the ink will look on the sheet.

Does Paper Weight Mean the Same Thing on Both Stocks?

Weight is measured the same way on both stocks, but the numbers do not compare like for like. The pound figure shifts with the paper category, and a coated sheet and an uncoated sheet at the same weight do not behave the same.

Weight itself is given in grams per square meter (gsm) or pounds, with grammage defined under ISO 536. Caliper is sheet thickness in points or microns (ISO 534). Opacity, covered by ISO 2471, tells you how much print shows through from the reverse, and brightness is the blue reflectance of the sheet under ISO 2470.

A pound rating is the weight of 500 sheets at the category’s basis size, 25 x 38 in for text and 20 x 26 in for cover, according to Neenah. That is why an 80 lb text sheet and an 80 lb cover sheet are different products.

Weight and thickness are separate measurements (a guide to paper weight versus thickness breaks it down), so a heavier sheet is not always the thicker one.

When comparing the two stocks, look at opacity and caliper rather than the pound number. Domtar’s example is an 80 lb coated text sheet against a 70 lb uncoated sheet, which it says will likely match or beat the coated one on both. By the Neenah conversion, that is roughly 104 gsm standing in for 118 gsm.

Show-through is the visible symptom of low opacity, so check it on the actual stock before a run.

Brightness needs its method named. ISO 2470-1:2016 measures diffuse blue reflectance factor on white and near-white sheets, with the instrument UV adjusted to CIE illuminant C (ISO reviewed and confirmed this edition in 2022).

D65 brightness is a separate figure under ISO 2470-2, measured with much higher UV content. Two sheets quoted at the same number are only comparable if both quotes use the same method.

How Much Does Coated and Uncoated Paper Stock Cost?

Neither stock is cheaper by default. Grade and finish move the price more than the coating does, weight plays a part too, and the sources disagree on which way the gap runs.

Taylor’s printing blog calls coated stock generally more expensive, while Domtar says both stocks come at every price point. Sappi argues the reverse for premium sheets.

Sappi puts a number on it: a premium smooth uncoated sheet can cost as much as 170% more than a comparable coated sheet, and a high-end opaque up to 20% more.

Its reasons come down to fiber and machine time. Wood fiber is the most expensive component of paper and uncoated grades need more of it per pound, while specialty uncoated machines run slower to handle color and finish changes.

Sappi sells coated paper, so weigh the claim accordingly. A fair reading is that the camps describe different grades. Commodity uncoated sits at the cheap end, and specialty smooth and colored uncoated sits at the expensive end.

On the coated side, Domtar sorts sheets by finish or by quality (brightness and price), and treats a brightness of 88+ as premium. The lower grades, known as lightweight coated, carry long magazine and retail insert runs because they are cheap and opaque, according to PIWorld.

Prices also move. Specialty Print Communications’ Q4 2025 market report (released in February 2026) lists a 6% to 12% uncoated freesheet increase from Phoenix Paper effective 6 February, and expects no coated price increases at that point. Its Q1 2026 report describes a second wave of uncoated increases (Boise at 5% from 1 June, Domtar at 4% to 6% from 15 June) and tighter coated supply, and Taylor’s Q3 2026 report says coated freesheet pricing is moving higher in 2026.

The Q4 2025 report also notes two uncoated freesheet mill exits, International Paper’s Riverdale conversion and the Pixelle Chillicothe closure.

Quote both stocks at the same size, quantity and weight class, then compare the finished piece rather than the sheet. Walsworth adds that heavier paper reduces show-through but raises printing, shipping and binding costs.

Which Paper Stock Fits Which Print Job?

Photo-driven print that needs accurate color goes on coated stock. Text, writing and anything meant to be touched usually does better on uncoated.

Brochures are where the sources split. Print Mule recommends gloss for brochures and leaflets, PrintXpand lists uncoated for brochures, and Domtar says textured uncoated finishes give photos of fabrics and art a dimensional look.

Photo density decides it. Image-led brochures go coated, text-led ones go matte or silk coated, and a comparison of matte versus glossy paper covers that second choice.

Books follow what the page is for. Bookmobile’s cream trade stock is its first pick for poetry, academic titles and novels, and at least half of its books print on it.

Walsworth’s 2026 paper guide goes the other way for images. It says coated stock is typically preferred for high-end photo reproduction, and uncoated is typically not recommended for photo-heavy books.

Page count also affects the spine. Coating compresses the fibers, so Qin Printing reports that uncoated stock comes out slightly thicker at the same gsm.

Card thickness is quoted in points, and how paper thickness is measured explains why a 14 pt card is not a 100 lb cover sheet. Shopify’s paper guide calls a 14 pt or 16 pt matte or satin card the safe default, with uncoated better when the card doubles as a note or appointment card.

Coated stock gives you color vibrancy and fine photographic detail, and the matte and silk versions keep text easy on the eye. On the downside, glossy sheets throw glare under bright light, and books come out slimmer at the same weight.

Uncoated stock has a natural, tactile surface that takes handwriting, and cream shades reduce eye strain over long reading. Photos look softer and color more muted, and finishing is limited, which comes up next.

When Does Each Paper Stock Fail?

Uncoated stock gives out first, usually under heavy ink or when a finish needs a sealed surface. Coated stock has fewer problems, mostly glare and the occasional text-heavy page.

Heavy solids and dense image areas push uncoated stock past what it handles well. Moisture is another weak point, since uncoated sheets absorb it more readily (Qin Printing). Company Folders also advises against laminating a textured sheet such as linen, felt or fiber.

Ink load is the failure that gets missed. Athlone Printing asks customers to keep total ink at 225% or below on uncoated stationery and under 300% on any stock, because set-off (wet ink transferring to the sheet above) is most common on uncoated letterheads.

That cap is a production limit tied to drying time before cutting, not a color aim.

Spot UV is the clearest wrong fit. 4OVER4 states that raised spot UV needs a sealed, coated surface, and that uncoated and cotton stocks absorb the coating instead of letting it sit up on top.

Workarounds exist. A laminated base under the spot UV works, and so does clear gloss foil stamping, which After Hours Creative Studio says works on uncoated board (see how spot UV coating works for the mechanics).

Company Folders draws the same line. Apart from lamination, coating finishes go only on coated stock.

Check what soft-touch means before ordering. 4OVER4 sells soft-touch as an uncoated stock that cannot take spot UV, while Company Folders offers spot UV over soft-touch lamination, a film applied after printing.

Glossy coated sheets glare under bright or reflective light, a risk Smartpress flags. The other problem is a text-heavy piece printed on a sheet that holds ink on the surface too densely.

PaperIndex describes that second case plainly: a high-holdout surface gives intense color density that suits a photographic piece, but excess surface ink creates readability and set-off problems in a text-heavy document.

How to Test and Prepare Artwork for a Chosen Stock

Test the stock with the real artwork, not a stand-in. File setup comes first, and a walkthrough on setting up a print-ready file covers bleed, color mode and export.

1. Decide whether the piece is read, written on, handled or mostly viewed.
2. Get samples. Smartpress offers a free paper sample book, and 4OVER4 advises feeling a sample before a full run. Printer representatives can also supply coated and uncoated Pantone chips (PIWorld). Of everything on this list, this step saves the most grief.
3. Convert to the reference condition for the sheet and pick the coated or uncoated Pantone set to match.
4. Confirm the total area coverage limit with prepress for that stock and press.
5. Correct for dot gain once. A press profile already compensates for the stock’s dot gain, so pick one correction method, either the profile or manual tone curves, not both.
6. Proof on the real stock. PaperIndex says heavy-coverage offset jobs need a paper review based on the actual artwork, not the grade name or weight.

Total ink is the step most often skipped. Coverage is the sum of the four channel percentages, and a guide to total ink coverage in CMYK printing shows how to read it in a file.

Uncoated vs Coated Paper Stock FAQ

Is coated paper recyclable?

Yes, clay-coated printing paper is recyclable. The American Forest & Paper Association (2026) says the shine on most glossy paper comes from a clay coating that recycles fully, while photo paper does not belong in the bin.

Plastic or wax coatings are a different case. Green Newton reports that most Massachusetts curbside programs reject them.

Can I put the FSC logo on a job printed on either stock?

Yes, if your printer holds chain-of-custody certification and bought the paper with an FSC claim. FSC UK states that text-only claims such as “Printed on FSC-certified paper” are not allowed without the label.

Certification is not limited to uncoated grades. Sappi lists FSC Chain of Custody on its silk and matt coated sheets.

Do digital presses print on uncoated stock?

Yes, on sheets certified or treated for the press. Mondi sells HP Indigo certified uncoated papers, and GF Smith guarantees many of its uncoated sheets for HP Indigo through an in-house aqueous coating.

PPG notes that paper outside the certified list can cause poor ink adhesion and paper jams.

How do I know if a coated sheet is safe for a laser printer?

Look for a sheet rated for laser or toner use. Laser gloss papers carry coatings formulated so toner melts and bonds to them.

A Chron small business guide warns that press-printing sheets may leave residue inside the printer or let toner flake off.

What is cast-coated paper?

Cast coating presses the coating against a heated, mirror-polished chrome drum while it is still plasticized, then dries it so the surface copies the drum. Patent filings describe the result as high gloss.

It remains coated stock, so ink holdout, reference profiles and finishing rules for coated sheets apply.

Does cream paper come coated?

No. Cream paper, also called ivory or natural, is an uncoated stock with a warm tint that lowers the contrast between sheet and text, according to Qin Printing.

Coated sheets are nearly always white. A Book Printing 101 guide notes that many books that look cream coated are white sheets with a light cream tone printed edge to edge.

Mixing Coated and Uncoated Stock in One Job

A single print job can combine coated and uncoated stock when each one carries the surface it suits. Qin Printing describes projects that put coated paper in image-heavy sections and uncoated paper in text or interactive sections.

Settle the image surface first, then the writing or reading surface. Images come first because a wrong stock there shows in every photo, while text surfaces accept either family.

Each stock then needs its own profile and ink limit, since the reference condition follows the paper type, so a shared file setup prints one of the two wrong.

Brand color is the catch. It will not match across the two stocks, so keep large brand-color areas on one.

Binding is the next decision for a mixed-stock piece, and binding types in print design lays out the options.

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Bogdan Sandu

Bogdan Sandu is a seasoned designer who has been designing websites since 2008.

Renowned for his expertise in logo design and visual branding, Bogdan has developed a multitude of logos for various clients.

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