Do You Have to Wet Watercolor Paper Before Painting? (2024)

Watercolor for Beginners

ByAnthony

Watercolor is obviously a water-based medium. And water plays an essential role in every painting technique. During the painting process, the paper surface goes through different cycles of wetness.

Wet to dry, dry to wet, etc.

So it’s easy to get confused about when precisely the paper needs dampening, especially for artists new to watercolor painting. They sometimes pick up the wrong habits 🙂

Moistening the paper is only done for specific reasons.

In this article, I’ll explain the when the why… and all the rest!

Should you wet watercolor paper before you begin painting?

The watercolor paper only needs to be moistened prior to painting if you intend to use a wet-on-wet painting technique. Wetting the paper can lead to buckling, making brushstrokes challenging to control because of the resulting bumpy surface.

I’ve seen newbies lavishly splashing water onto their sheets of watercolor paper at the beginning of each new project! This is probably because they’ve seen other artists do this when they prepare to paint a new subject.

Pre-wetting the paper is not required!

There are only a few reasons to moisten the paper surface before a painting:

  • If you need to apply awet-on-wet technique.
  • When you’restretching the paperin preparation for a future painting.
  • Because your paper ispoorly sized.

Let me explain those last two cases…

  1. Stretchingis when you pre-soak watercolor sheets, tape them down to a board and then let them dry. The paper expands when wet, then dries when it contracts. Fixing down the edges of the soaked sheet makes the paper tight like a drum when it dries out.

As a result, you get a nice smooth work surface even when you paint a big wet wash!

I rarely stretch my watercolor paper. It can be pretty time-consuming to prepare sheets beforehand. I don’t always have the patience 🙂 And it isn’t strictly necessary.

  1. Secondly, the surface of the watercolor paper has a coating called“sizing.”Manufacturers often use gelatin(a transparent water-soluble substance).The sizing modifies the porosity and absorbent qualities of the surface so that it doesn’t soak up the paint like a sponge.

Sometimes a batch of watercolor paper can have uneven or blotchy sizing. You can brush the surface with clear water using a large brush or a sponge to fix this. Because the sizing is water-soluble, this helps re-distribute the sizing all over.

Reasons not to soak paper at the start of a painting.

Do You Have to Wet Watercolor Paper Before Painting? (1)

As mentioned,an excess of moisture makes watercolor paper warp and deform. This can make it tricky to control the movement of wet brush marks because they flow around the bumps on the surface.(This is why some artists prefer to stretch the paper in advance).

A wet surface also behaves differently to dry paper. Paintinga detailed or accurate shape when the surface is dampis impossible. Colored pigments spread out from the brush marks and disperse quite far(this effect is intentional when painting with a wet-on-wet technique). On the other hand, a brush stroke on dry paper has crisp, well-defined edges.

Finally, if you soak the paper excessively, you willwash off some of the surface sizing. The sizing is there to help balance the permeability of the paper so that it doesn’t get absorbed deep into the paper fibers.

An over-enthusiastic brushing with water alters the surface sizing and the handling properties of the paper.

When should you wet watercolor paper?

Do You Have to Wet Watercolor Paper Before Painting? (2)

The most commonvalidreason for pre-wetting paper is when applying a wet-on-wet technique(painting with a loaded brush onto a wet surface).

Wet-on-wet is a unique technique that allows the colored pigments to disperse over the paper’s surface. It’s a unique characteristic of watercolor painting. You can achieve some beautiful effects using this approach.

Why do artists wet the paper before painting?

Artists who start out with a dampened painting surface usually do this to establish a background. You’ll see this quite often in landscape painting, but It can be done on all types of subjects.

Using this wet-on-wet method allows artists to start building up underlying shapes of color and tone. It produces a smooth, even distribution of colors to establish the subject before the following layers of paint.

The result is uniform and soft, with very few or no brush marks. A single color can produce a smooth and progressive tone change from dark to light(graduated wash). Using more than one color creates amazing soft-edged multicolored patterns(variegated wash).

Wet-on-wet is an excellent technique that is singular to mediums like watercolor.

I would encourage you to take advantage of it… Deliberately 🙂

Do You Have to Wet Watercolor Paper Before Painting? (3)
Do You Have to Wet Watercolor Paper Before Painting? (2024)

FAQs

Do You Have to Wet Watercolor Paper Before Painting? ›

Should you wet watercolor paper before you begin painting? The watercolor paper only needs to be moistened prior to painting if you intend to use a wet-on-wet

wet-on-wet
Wet-on-wet, or alla prima (Italian, meaning at first attempt), direct painting or au premier coup, is a painting technique in which layers of wet paint are applied to previously administered layers of wet paint.
https://en.wikipedia.org › wiki › Wet-on-wet
painting technique. Wetting the paper can lead to buckling, making brushstrokes challenging to control because of the resulting bumpy surface.

Are you supposed to wet watercolor paper before painting? ›

Many artists soak or stretch their watercolor paper prior to painting. This is typically done on lighter-weight watercolor sheets to stop the paper from buckling when wet media is applied to the surface. When watercolor is added, the moisture causes the surface to expand slightly on the wet side.

Can you paint watercolor on dry paper? ›

The wet on dry technique is a fundamental method in watercolour painting where wet paint is applied onto a dry paper surface. We use it to create precise lines, textures, and details, because it provides greater control over the paint and prevents bleeding or flowing over the paper surface.

Should you soak watercolour paper? ›

The weight of the paper will determine how long you should leave your paper in the water bath. For 90lb the paper should be left for 3 minutes. For 140lb the paper should be left for 8 minutes. For heavy papers like 300lb, the paper should be left for 20 minutes.

Why wet the back of watercolor paper? ›

However, some artists prefer dampening the reverse side of their paper and laying it on a flat surface. The moisture helps it adhere to the surface. Then, they moisten the front of the paper where needed and commence painting. Because the back of the paper remains damp, it retains its moisture for a longer period.

How do you prepare watercolor paper for painting? ›

Fill a large sink or bath with water and submerge the paper, rolling or folding it as necessary, but avoiding creasing it. A heavy paper (300lb/640gsm) must soak for 15 to 20 minutes, while a lightweight one (90lb/190gsm) needs only four to five minutes.

What happens if you don't stretch watercolor paper? ›

Stretching Paper Keeps it Flat While You Paint

Unstretched paper naturally buckles when water and wet paint are applied, as the paper's fibres expand, creating an uneven surface that presents challenges during painting.

How do you keep watercolor paper flat when painting? ›

Lay out on a flat surface like a wooden board and pull and stretch the paper tight. Tape down the edges with strong painters tape, or staple it down. Allow to dry completely before painting on it. Some artists swear by stretching their papers, but I find it difficult and fiddly to lift them off the board.

Can I use both sides of watercolor paper? ›

Can you Paint on Both Sides of Watercolor Paper? By now I'm sure you've guessed the answer is yes. It really is a question of personal preference. I've found very little difference on both faces of Arches, Winsor & Newton, and Sunders Waterford papers.

Is it OK to roll watercolor paper? ›

Water colour doesn't brittle, only oil and acrylics do - so you won't have a problem in that matter. So in conclusion you can roll it, but do not exceed keeping it rolled for more than 24 hours. How long do watercolor paintings last? If they are taken care of very well, they can last for a long, long time.

Why do you tape down watercolor paper? ›

Stretching is a simple process that ensures the perfect painting surface for watercolour and gouache and involves soaking the paper, taping it down whilst wet and, as it dries, shrinking it only to the extent that the tape will allow so that it has no movement at all when further layers of water are applied.

Can watercolor paper go bad? ›

Yes it can, depends on how you store it, as they can last forever under the right conditions. But the sizing can have issues if it's not protected.

Do I use the rough or smooth side of watercolor paper? ›

The smooth side is used for fine details and detailed work because it helps the paint flow evenly across the page and provides more control over your strokes. The rough side is designed for larger areas so you can get more coverage with less paint.

What do you put behind watercolor paper? ›

All you need is a piece of wood board, water, and watercolor paper tape. You can purchase wood especially for mounting watercolor paper in most art supply stores. The watercolor tape is also available there.

What happens if you use watercolor on normal paper? ›

It's definitely possible to use watercolor on regular paper. Just don't expect amazing results. The problem with using watercolor on regular paper is that the paper will warp, wrinkle, and pill, and the paint won't perform as well as it could.

How do you prep watercolor paper so it doesn't warp? ›

Prep your paper by thoroughly wetting both sides in a layer of clean water. Lay out on a flat surface like a wooden board and pull and stretch the paper tight. Tape down the edges with strong painters tape, or staple it down. Allow to dry completely before painting on it.

Why do artists wet paper before drawing? ›

The artist is using watercolor paper, and wetting it to stretch it and smooth it before beginning to draw.

Do you paint on the rough or smooth side of watercolor paper? ›

It's really up to the artist. Personally – I preferred painting on the smoother or “back” side of the watercolor paper since my paintings tend to have a good amount of fine details. I also like to work with Mixed Media elements such as pencils, pens, and inks – which work easier on smoother surfaces.

Do you prime watercolor paper? ›

My Priming watercolor technique is successful because it allows pigment to be absorbed as far as possible into the inner layers of the paper. I use this method at the early stages of a painting.

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