Cold Press vs Hot Press vs Rough Watercolor Paper: Which One Should You Use?

For most watercolor painting, cold press paper is the one to use. It has enough texture to hold a wash evenly and enough smoothness for reasonable detail. Hot press suits botanical work, fine line and ink, while rough suits loose landscapes where you want the grain of the paper to show through.

The three names describe the surface of the sheet and how it was finished at the mill. Once you know what each surface does to water and pigment, picking the right one gets much easier.

How the Three Surfaces Are Made

Watercolor paper starts as wet pulp formed into sheets on felt. What happens next decides the surface.

• Hot press sheets are pressed between heated metal rollers or plates. The heat and pressure flatten the fibers into a smooth, almost satin surface.
• Cold press sheets are pressed without heat. Some of the felt texture stays in the paper, giving a gentle, even tooth. In the UK this is often sold as "NOT", short for not hot pressed.
• Rough sheets get little or no pressing after forming, so they keep the full texture of the felt. The surface has clear hills and hollows you can feel with your fingertips.

Weight and fiber content are separate choices. You can find cold press paper in wood pulp or cotton, and in light or heavy weights. The surface only tells you about texture.

Cold Press: The Everyday Surface

Cold press is where most watercolorists spend most of their time, and for good reason. The slight tooth holds water in small pockets, so a wash spreads evenly and dries without harsh streaks. Pigment settles into the texture a little, which gives granulating colors like ultramarine and burnt sienna some nice character.

You can still paint fairly fine detail on it with a good round brush. Leaves, window frames, the edges of rocks: all of these work well on cold press. It is also forgiving. Small mistakes in a wash tend to blend in instead of standing out.

If you paint landscapes, florals, still life or urban sketches and you only want to buy one kind of paper, buy cold press.

Hot Press: For Detail and Flat Color

Hot press paper is smooth, so paint sits on the surface instead of sinking into texture. That makes crisp edges and fine lines very easy. Botanical painters like it for petals and leaf veins. Illustrators like it because ink pens glide across it and scanned work comes out clean, with no texture shadows.

The same smoothness makes large washes harder. Water moves quickly across hot press and dries with visible edges and blooms if you work slowly. Many beginners find it frustrating for skies. It rewards painters who already have good wash control, or those who paint in smaller, more controlled areas.

Hot press is also a good surface for gouache and for mixed media work where you combine watercolor with colored pencil.

Rough: For Texture and Loose Work

Rough paper has the most pronounced grain. When you drag a lightly loaded brush across it, the paint catches only the high points and skips the hollows. This dry brush effect is perfect for sparkle on water, bark, stone walls and old wooden doors.

Rough paper holds a lot of water, so washes stay wet longer and blend softly. Loose landscape painters often prefer it for that reason. Fine detail is harder, since a thin line breaks up as it crosses the texture. Rough also tends to use a bit more paint, because the pigment has more surface to fill.

Side-by-Side Comparison

Surface Is Only Part of the Choice

Two sheets of cold press paper can behave very differently. Weight and cotton content matter as much as surface.

Weight is measured in GSM. At 300 GSM a sheet is heavy enough to take wet washes without being stretched first. Lighter paper cockles and buckles as soon as it gets properly wet. If you want the numbers explained, read Understanding Art Papers: GSM, Types, and How to Choose.

Cotton content changes how the paper handles water. Cotton sheets absorb evenly, give you more working time and let you lift color back out for corrections. Wood pulp sheets are cheaper and fine for practice, but washes dry faster and lifting is harder. We compare them properly in 25% Cotton vs 100% Cotton Watercolor Paper.

In our own range, the ARTIOS 100% cotton A3 watercolor paper is 300 GSM and cold pressed, with 36 sheets in a pack. The 25% cotton A3 paper is also 300 GSM and comes as 10 sheets, a sensible step up from wood pulp for regular practice.

Which One Should You Buy First

Start with cold press. It handles every basic technique, from flat washes to wet-on-wet to simple detail, so you learn how watercolor behaves without the paper fighting you.

After a few months, buy a small pack of whichever surface matches the work you enjoy most. If you keep painting flowers and want sharper edges, try hot press. If your landscapes feel too tight and you want more texture, try rough. Painting the same subject on two surfaces side by side teaches you more than any description can.

One practical note for Indian homes: humidity affects all three surfaces. In the monsoon, washes take longer to dry and edges soften more than usual. Store your sheets flat and dry, and give them extra drying time between layers.

For a gentle start with the medium itself, see Watercolor Painting: A Complete Beginner's Guide.

Frequently Asked Questions

Can I paint large washes on hot press paper?

Yes, but work quickly with a large brush and plenty of mixed paint. Wetting the area with clean water first gives you more time. Expect some hard edges until you get used to how fast it dries.

Is cold press the same as NOT paper?

Yes. NOT is the British name and simply means the sheet was not hot pressed. The surface is the same medium texture.

Which side of watercolor paper should I paint on?

On most papers either side works. Some sheets have a watermark that reads correctly from the intended front. If one side feels slightly more even, use that one for finished work.

Does rough paper use more paint?

A little more, because the pigment has to fill the hollows in the texture. The difference is small for most paintings and noticeable only on large, heavy washes.

Is cold press good for gouache?

It works well. Gouache also sits nicely on hot press if you want very flat, even areas of color.

You can find our cold press watercolor sheets, cotton papers and mixed media papers in the ARTIOS Papers collection.