Watercolor Paper

Choosing the right watercolor paper is just as crucial as selecting the right paints and brushes, as it significantly impacts how your watercolors behave and the final appearance of your artwork. Here’s a detailed breakdown of the various types of watercolor paper and how to select the best one for your needs:

Understanding Watercolor Paper Characteristics

Watercolor paper is specifically designed to handle large amounts of water without buckling, warping, or disintegrating. Several factors contribute to its unique properties:

1. Texture (Surface Finish)

This refers to the “tooth” or roughness of the paper’s surface. There are three main types:

• Hot Press (HP):
  • Description: This paper has a very smooth, almost velvety surface, created by pressing the paper through hot metal rollers. It has minimal “tooth.”
  • Characteristics:
    • Smoothness: Ideal for fine details, crisp lines, botanical illustrations, and precise work.
    • Absorbency: Less absorbent than cold press or rough paper, meaning paint sits on the surface longer, allowing for more time to manipulate washes and make corrections.
    • Vibrancy: Colors often appear more vivid and brilliant on hot press paper because light reflects more directly off its flat surface.
    • Techniques: Excellent for glazing (layering transparent washes), pen and ink work combined with watercolor, and achieving smooth, even washes.
    • Considerations: Can be less forgiving for certain wet-on-wet techniques as paint may spread more freely and dry marks can be more noticeable.
• Cold Press (CP) / NOT:
  • Description: This is the most popular and versatile watercolor paper, with a slightly textured or “bumpy” surface. “NOT” stands for “not hot-pressed.” It’s made by pressing the paper through cold metal rollers.
  • Characteristics:
    • Texture: The subtle texture helps hold pigment well, making it suitable for a wide range of techniques.
    • Absorbency: More absorbent than hot press, allowing paint to sink into the fibers and dry more quickly. This can lead to slightly softer, more diffused colors.
    • Versatility: Great for layered paintings, textured effects, and both detailed work and looser washes. It’s often recommended for beginners due to its forgiving nature.
    • Techniques: Works well for wet-on-wet blending, dry brush techniques, and creating various textures.
    • Considerations: Achieving very fine details can be slightly harder than on hot press, and perfectly smooth washes might be trickier due to the texture.
• Rough:
  • Description: As the name suggests, this paper has the most pronounced, coarse, and irregular texture with significant peaks and valleys. It’s made by drying the sheet between textured felts without much pressing.
  • Characteristics:
    • Texture: Highly textured surface that creates unique granulation effects and emphasizes the natural characteristics of watercolor pigments.
    • Absorbency: Generally the most absorbent of the three types, allowing pigments to settle deeply into its valleys.
    • Style: Best suited for expressive, loose, and textural painting styles, such as landscapes, seascapes, or abstract work where the texture is part of the art.
    • Considerations: Not ideal for fine details or precise lines, as the brush strokes are harder to control. Colors may appear less vibrant initially due to the deep valleys absorbing more light, but the texture can add incredible depth.

2. Weight (Thickness)

Watercolor paper weight is measured in grams per square meter (gsm or g/m²) or pounds per ream (lb). Higher numbers indicate thicker, more durable paper that can handle more water without buckling.

• 90 lb (185 gsm):
  • Description: Thin and light.
  • Use: Best for light washes, practice, sketching, or situations where budget is a primary concern. It buckles easily and often requires stretching before painting to prevent warping.
• 140 lb (300 gsm):
  • Description: The most common and versatile weight.
  • Use: Good for most watercolor techniques and levels. It can handle a fair amount of water with minimal buckling, though for very wet techniques or larger pieces, stretching might still be beneficial. This is often recommended for beginners.
• 300 lb (640 gsm) and heavier:
  • Description: Very thick, almost like cardstock.
  • Use: Ideal for heavily layered washes, intense wet-on-wet techniques, and artists who prefer not to stretch their paper. It is highly resistant to buckling and warping.
  • Considerations: More expensive and can be harder to cut or tear.

3. Material Composition

• 100% Cotton (Rag Paper):
  • Description: Made from cotton fibers, known for their strength and purity. Often referred to as “rag” or “cotton rag” paper.
  • Characteristics: Offers superior absorbency, durability, and archival quality. It handles repeated wetting and scrubbing exceptionally well without deteriorating. Colors often appear richer and more luminous.
  • Use: Professional-grade paper, ideal for finished artworks intended for longevity.
  • Considerations: More expensive than wood pulp paper.
• Wood Pulp (Cellulose):
  • Description: Made from wood pulp.
  • Characteristics: Less expensive and widely available, often used for student-grade papers. It may not absorb water as evenly as cotton paper and can be more prone to buckling and yellowing over time if not acid-free.
• Blends:
  • Some papers are a blend of cotton and wood pulp, offering a middle ground in terms of quality and price.

4. Sizing

• Watercolor paper is treated with “sizing,” a substance (traditionally gelatin, or synthetic alternatives) that reduces its absorbency. This prevents paint from soaking too quickly into the fibers and appearing dull. Internal sizing is mixed with the pulp, while external (surface) sizing is applied to the surface. Good sizing allows the paint to sit on the surface, giving you more working time and keeping colors vibrant.

5. Archival Quality (Acid-Free)

• Acid-Free: Paper with a neutral or alkaline pH. This is crucial for the longevity of your artwork, as acidic paper will yellow, become brittle, and degrade over time.
• Archival: Beyond just being acid-free, archival paper meets higher standards of permanence and durability, often being made from 100% cotton and free from optical brighteners that can fade.
• Recommendation: Always choose acid-free paper for any artwork you want to last. Professional-grade papers are typically acid-free and often archival.

Selection of Watercolor Paper (Choosing for Your Needs)

To select the best watercolor paper, consider your skill level, painting style, desired effects, and budget.

For Beginners:

• Cold Press, 140 lb (300 gsm): This is the most recommended starting point. Its moderate texture is forgiving, allowing for various techniques, and the weight reduces buckling, so you can focus on learning to paint rather than stretching paper.
• Student Grade: Start with student-grade paper for practice. It’s more affordable, so you won’t feel hesitant to experiment. While it may not perform exactly like professional paper, it’s excellent for getting a feel for the medium.

For Detailed Work (Botanicals, Illustrations, Portraits):

• Hot Press, 140 lb (300 gsm) or 300 lb (640 gsm): The smooth surface allows for intricate details and crisp lines. The heavier weight is beneficial if you use multiple layers or desire absolutely no buckling.
• 100% Cotton: For serious detailed work, especially if selling, invest in 100% cotton hot press paper for its superior performance and archival quality.

For Loose, Expressive, or Textured Work (Landscapes, Abstracts):

• Rough or Cold Press, 140 lb (300 gsm) or 300 lb (640 gsm): The texture of rough paper enhances granulation and adds character, while cold press offers a good balance. The heavier weights allow for ample water and layering without excessive buckling.
• 100% Cotton: If you want your textures to truly shine and your work to last, opt for 100% cotton paper.

For Heavy Washes or Wet-on-Wet Techniques:

• 300 lb (640 gsm) (any texture): This heavy paper will resist buckling significantly, even with very wet applications.
• 100% Cotton: Ensures the paper can withstand repeated wetting and drying without compromising its integrity.

Budget Considerations:

• Practice/Studies: Student-grade wood pulp paper or thinner sheets (like 90lb cold press) are economical.
• Finished Artwork: Invest in artist-grade, 100% cotton, acid-free paper (140lb or 300lb depending on your technique) for pieces you intend to keep or sell.

Formats:

• Sheets: Large individual sheets (often 22×30 inches) that can be cut down. Economical for larger quantities, but require stretching if they’re not heavy enough.
• Pads: Pages bound on one side (spiral or glued). Convenient for portability and practice.
• Blocks: Pages glued on all four sides. This format is excellent as the paper is held taut, preventing buckling, and you only separate a sheet once the painting is completely dry. Ideal for those who don’t want to stretch paper.

Ultimately, the best way to find your preferred paper is to experiment. Buy a few different types of small sheets or sample packs and see how your paint behaves on each, noting how they respond to your personal style and techniques.