This trips up more painters than it should. US and UK papers are usually labeled by pound weight (lb) — a legacy measure of what a ream of that paper weighed at full sheet size. European and most Asian-manufactured papers are labeled by gsm (grams per square metre), a direct weight-per-area measurement. The two systems describe the same physical property; they're just not the same number.
| lb | gsm (approx) | Practical note |
|---|
| 90lb | ~190gsm | Thin, needs stretching for any serious wet work |
| 140lb | ~300gsm | The standard weight — handles most landscape work unstretched |
| 300lb | ~638gsm | Heavy, rarely needs stretching even for saturated washes |
If a listing says "300lb," that is not the same as 300gsm — 300lb is roughly double the weight of 300gsm paper. This is the single most common paper-buying mistake I hear about from painters ordering internationally for the first time. When in doubt, check the gsm number specifically rather than relying on the lb label alone.
Sizing is the chemical treatment applied to the paper that controls how fast water penetrates it. You can't see it, but you feel it the moment your brush touches the sheet, and it's the real reason two "100% cotton, 300gsm, cold press" papers from different brands can behave completely differently.
Gelatin sizing — used in Arches, Saunders Waterford, and Hahnemühle's professional lines — creates a harder surface that resists initial absorption. Water and pigment sit nearer the surface for longer, which extends your wet-on-wet working window and makes lifting significantly easier, since the pigment hasn't bonded deep into the fibres. This is the sizing behind Arches' reputation for a long, forgiving wet stage.
Synthetic sizing — used in Fabriano Artistico and papers like Legion Stonehenge Aqua — absorbs water faster, letting pigment penetrate deeper into the cotton. Edges soften more readily and staining pigments lock in with more richness, but lifting is harder once a wash has set. This is part of why Fabriano is often recommended for glazing-heavy work: each layer settles in cleanly rather than disturbing what's underneath.
In practice, neither surface is inherently superior; they simply demand different working speeds. When I want ample time to manipulate complex sky washes, gelatin-sized paper provides that extra margin. When building clean, multi-pass glazing layers across a landscape, synthetic-sized paper rewards a faster, committed hand.
Blocks are pre-gummed on all four sides, holding the sheet flat without stretching — the standard choice for landscape work on location or in the studio, since you paint directly on the top sheet and peel it off once dry. Most Arches and Saunders Waterford purchases for finished work are blocks.
Pads are glued on one edge only, like a sketchbook. Lighter-weight pads (90lb and under) will cockle under a heavy wash unless you stretch them first; heavier pads handle moderate washes without issue.
Loose sheets (typically imperial size, roughly 22×30 inches) are the most economical way to buy cotton paper if you cut and stretch your own — the standard approach for painters working larger than block sizes allow, or producing multiple smaller paintings from one sheet.
Rolls are the format for painters working significantly larger than standard sheet sizes, or for those who want to cut custom dimensions repeatedly from continuous stock. Arches sells cold-press cotton by the roll for exactly this reason.
Cold press is the standard for landscape work, and for good reason — it holds enough tooth to grip granulating pigment and support atmospheric wet-on-wet passages, while still allowing controlled detail where you need it. If you're buying one paper to do most of your landscape work on, cold press is it.
Hot press is smooth, with almost no visible tooth. Pigment sits on the surface rather than settling into texture, so granulation is minimal and washes dry with sharper, harder edges. It suits detailed botanical or architectural subjects far better than atmospheric landscape work; in my experience, a soft monsoon sky or a misty mountain ridge loses its atmospheric depth on hot press because pigment cannot settle into surface texture.
Rough has the most pronounced texture of the three. Granulating pigments cluster dramatically into the surface, and dry-brush work catches beautifully across raised fibres, as I often rely on when rendering weathered rock and foreground terrain. Saunders Waterford's rough surface in particular holds pigment exceptionally well for these textures, though it demands extra care on smooth, graduated skies.
For most landscape subjects, start with cold press. Move to rough once you know specifically why a passage needs it.
Arches is 100% cotton, mould-made in France, and has been in continuous production since 1492. Its hard gelatin sizing is what makes it the benchmark — paint stays workable near the surface longer than on almost any other paper, giving granulating pigments time to separate and cluster before the wash sets.
Whenever I return to Arches, the first thing I notice is how its hard sizing demands a generously loaded brush; an underloaded brush drags noticeably across the sheet. It rewards confident, decisive strokes. When painting the sky and mountain passages in A Snowy Morning in Kedarnath, where ultramarine and burnt sienna granulation needed time to separate and the wet-on-wet horizon edge required a soft transition, Arches cold pressed was the surface that reliably yielded that control.
A Snowy Morning in Kedarnath — granulation in the sky and mountain passages comes from ultramarine and burnt sienna settling into the raised fibres of cold pressed cotton paper. Hard gelatin sizing keeps pigment near the surface long enough to cluster visibly before it's absorbed. Explore Himalayan paintings →
Available in blocks, pads, loose sheets, and rolls, in weights from 90lb through 300lb. Widely stocked at art supply retailers across the US, UK, and Europe.
Fabriano is manufactured in the town of the same name in Italy — often credited as the birthplace of European papermaking, with a history stretching back roughly 750 years. Fabriano Artistico's synthetic sizing absorbs faster than Arches', which means wet-on-wet transitions happen more quickly and glazing layers settle evenly without fighting the brush.
In my own studio work, I reach for Fabriano Artistico whenever a landscape relies heavily on multi-layer glazing, such as laying down an initial wash of warm ochre, followed by cool shadow glazes and a final atmospheric haze. Because the synthetic sizing allows each transparent wash to settle quickly, subsequent layers sit cleanly without lifting the paint beneath. Overworked passages also recover more gracefully than on Arches, though the shorter wet window means soft edge transitions must be executed with faster brushwork.
Meaningfully less expensive than Arches at equivalent weights, without a significant performance gap for most landscape techniques.
Made by St Cuthberts Mill in Somerset, England — a mill that has been producing paper on the same site since 1736 — Saunders Waterford is endorsed by the Royal Watercolour Society and is often described as "the British Arches." Its sizing sits between Arches and Fabriano: firmer than Fabriano, slightly gentler than Arches.
Where Saunders Waterford distinguishes itself in practical studio work is at the 300lb (638gsm) weight, which eliminates buckling even during heavy, saturated washes. On its rough surface, granulating earth pigments and mineral blues settle deeply into the paper valleys, creating rugged rock and mountain textures almost effortlessly while keeping the paint workable.
Widely available in the UK and reliably stocked by the specialty international retailers below.
Hahnemühle is a German papermaker with a history dating to 1584. Their professional watercolor lines (Cezanne, Leonardo) use gelatin sizing and sit between Arches and Fabriano in surface feel — not quite as hard as Arches, firmer than Fabriano.
What I appreciate most about Hahnemühle when painting series or commission pieces is its strict batch-to-batch consistency. A sheet from a new block absorbs pigment and handles wet washes identically to one bought years ago, eliminating unexpected surprises mid-painting. While availability outside Europe can be more limited, its balanced sizing offers a very predictable middle ground between Arches and Fabriano.
Having painted extensively on Baohong Artist Grade alongside European cotton sheets, I find it holds up impressively well for wet-on-wet passages, clean lifting, and multi-pass glazing. While Arches and Saunders Waterford still offer a slightly longer open working window for expansive sky washes, Baohong performs at a true professional standard for daily studio work at a fraction of the import price.
Since Baohong is also the paper I recommend most often to Indian painters — it's easy to source there — the full profile, current pricing context, and retailer list live on the India paper guide rather than duplicated here.
Budget Entry Papers — Before You Commit to Cotton
Canson XL and Strathmore 400 Series are cellulose (wood pulp) papers, inexpensive and widely available, and genuinely fine for building technique before you're ready to spend on cotton. Their sizing breaks down faster under repeated wetting and scrubbing than any cotton paper here, so don't use them for finished work you intend to keep or sell.
Bockingford — also made by St Cuthberts Mill, the makers of Saunders Waterford — is a step up: not 100% cotton, but a well-regarded, affordable option popular with UK painters who want more durability than pure cellulose without the cotton price.
Extended wet-on-wet atmosphere. When painting soft monsoon skies, distant mountain ranges, or misty valleys that require continuous feathering, gelatin-sized paper gives you the longest open window: Arches first, with Saunders Waterford a very close second.
Maximum granulation for rock and mountain texture. Ultramarine and burnt sienna cluster most dramatically on Saunders Waterford rough or Arches cold press. Smoother, more tightly sized surfaces (Fabriano, hot press generally) mute this effect.
Heavy multi-session glazing. Fabriano's forgiving synthetic sizing is the easiest surface to rework without disturbing earlier layers. For genuinely saturated, many-layered work, Saunders Waterford's 300lb option removes buckling as a concern entirely.
Consistency across a large body of work — portfolios, commissions, exhibition series. Hahnemühle's batch-to-batch reliability is the strongest argument for it specifically.
| Situation | Paper | Notes |
|---|
| First cotton paper, want the safest choice | Arches 140lb Cold Press | The benchmark for a reason; forgiving of an underloaded brush only in that mistakes are consistent and predictable |
| Heavy multi-layer glazing, forgiving of rework | Fabriano Artistico | Softer sizing, more affordable, shorter wet window |
| Large-format, heavily saturated landscape work | Saunders Waterford 300lb | Rarely needs pre-stretching even at maximum wash saturation |
| Granulation-heavy mountain or rock subjects | Saunders Waterford Rough or Arches Cold Press | Hard sizing + tooth clusters pigment dramatically |
| Commission work needing sheet-to-sheet consistency | Hahnemühle | Best documented batch consistency |
| Value cotton without the import premium | Baohong Artist Grade / Elite | See full profile on the India guide |
| Practice and technique-building | Canson XL or Strathmore 400 | Cellulose, inexpensive, not for finished work |
UK: Jackson's Art is one of the most comprehensive professional watercolor suppliers online, stocking papers — including less common formats and weights — that smaller retailers don't carry.
US: Dick Blick carries the full range at competitive pricing and is a reliable choice for larger volume purchases.
Both ship internationally in many cases; check current shipping terms for your country before ordering. For UK and European buyers specifically, Jackson's Art's own-brand papers are also worth comparing against the benchmark brands above once you know what surface and weight you're looking for.
Both are 100% cotton with gelatin sizing, but Arches features a slightly firmer surface response and an unmatched track record, whereas Saunders Waterford offers heavier 300lb options and exceptional granulating tooth on its rough grade. In practice, artists choose between them based on tactile brush feel; both support rigorous professional work.
For most landscape techniques, yes, and for heavily glazed, multi-layer work it's arguably more forgiving. The synthetic sizing absorbs faster, which shortens the wet-on-wet working window compared to Arches but makes reworked passages easier to recover. It's also meaningfully less expensive.
140lb refers to the pound weight system used mainly in the US and UK — roughly equivalent to 300gsm, the standard weight for landscape watercolor work. "Cold press" describes the surface texture: moderate tooth, the standard choice for most landscape subjects. 140lb paper generally does not need pre-stretching for typical wash work.
Close, and for a fraction of the price. Baohong holds up well across wet-on-wet, lifting, and layered glazing at a genuinely professional level. Arches and Saunders Waterford still have an edge specifically on extended wet-on-wet working time and long-term batch consistency, which matters most on large, slow, heavily saturated paintings. For most everyday landscape work, the practical difference is small.
No, not in the way perishable materials do. Properly stored 100% cotton paper — flat, away from humidity and direct sunlight — remains stable for decades before it's ever painted on. What does matter is storage: paper left in high humidity can develop mould or foxing over years, and paper stored improperly can pick up a slight warp. Buying paper well ahead of when you'll use it is not a problem as long as it's stored flat and dry.
Stretching prevents buckling on lighter-weight paper during heavy wet washes: soak the sheet fully, lay it flat on a board, and tape all four edges down with gummed paper tape while damp, then let it dry fully before painting — the paper shrinks slightly as it dries and pulls itself flat. This is different from mounting a finished painting for framing; for that process, see the framing guide. At 300gsm/140lb or heavier, most landscape work doesn't require stretching at all.
Cold press for nearly all landscape subjects — it balances granulation, wet-on-wet softness, and controlled detail. Rough suits texture-heavy foregrounds and rock faces specifically. Hot press is better suited to detailed, hard-edged subjects than atmospheric landscape work, since it minimizes granulation and dries with harder edges.
Gelatin-sized paper (Arches, Saunders Waterford) gives a longer, more forgiving wet-on-wet working window and lifts more easily, which many beginners find easier to learn control on. Synthetic-sized paper (Fabriano Artistico) absorbs faster and is more forgiving of reworking a passage without disturbing it. Neither is strictly easier — they suit different working speeds.
Related: Best Watercolor Paper for Landscapes — India Guide · What Makes Watercolor Unique as a Medium · How Long Does a Watercolor Painting Last? Archival Quality Explained · How to Paint Mountains in Watercolor · Wet-on-Wet vs Wet-on-Dry — Full Comparison
Joy Mukherjee is a self-taught watercolor artist based in Kolkata, India. All originals are made on 100% cotton paper with professional-grade lightfast pigments and ship with a Certificate of Authenticity. Browse the full gallery or available originals.
