Koh-i-noor Acrylic Primer (Gesso) 165512, 500 g

Koh-i-noor Acrylic Primer (Gesso) is a professional-grade, white acrylic ground essential for preparing and sealing painting surfaces to ensure optimal paint adhesion, color vibrancy, and artwork longevity. This 500 g heavy-body formula creates a flexible, absorbent, and permanent white layer that is both water- and oil-resistant, forming the perfect foundation for acrylic and oil painting techniques. By sealing porous substrates like raw canvas, wood, and plywood, it prevents paint from being absorbed unevenly, resulting in more brilliant colors, better brushstroke control, and a stable, archival-quality surface for your creations.

Product Overview & Key Features

• Universal Multi-Surface Primer: Specifically formulated to prepare and seal absorbent surfaces such as raw cotton or linen canvas, wood panels, plywood, MDF, hardboard, and cardboard.
• Dual-Purpose for Acrylics & Oils: Creates a stable, non-absorbent ground suitable for both acrylic and traditional oil paints, thanks to its oil-resistant properties that prevent the support from drawing oil from the paint layer.
• Heavy-Bodied Acrylic Formula: A thick, paste-like gesso that dries to a bright white, slightly textured matte finish, ideal for building "tooth" that helps subsequent paint layers adhere securely.
• Enhances Paint Performance & Economy: Seals the substrate to prevent paint from sinking in, which conserves paint, allows true colors to shine with maximum vibrancy, and improves the clarity of details and brushwork.
• Creates a Flexible, Durable Film: Dries to a permanent, flexible, and sandable film that will not crack, yellow, or become brittle over time, ensuring the long-term stability of your artwork's foundation.
• High-Capacity, Economical Packaging: The practical 500 g (approx. 500 ml) plastic jar offers excellent value for studio artists, frequent painters, and those working on large canvases or multiple projects.

Core Benefits for Artists

• Professional, Archival Foundation: Transforms raw, uneven, or overly absorbent surfaces into a consistent, professional-quality painting ground used by artists worldwide.
• Maximizes Color Brilliance: The bright white base reflects light through translucent paint layers (glazes), making colors appear more luminous, saturated, and true to their hue compared to painting on raw, off-white canvas.
• Ensures Proper Paint Adhesion: Provides the ideal texture ("tooth") for paint to grip, preventing peeling or flaking and ensuring the longevity of the finished artwork.
• Customizable Surface Texture: Can be applied smoothly with sanding for a fine finish or left with visible brush marks to create more texture for expressive painting techniques.
• Protects Your Investment: A fundamental, cost-effective step that protects your investment in canvases and high-quality paints, guaranteeing your artwork is built on a stable, lasting surface.

Step-by-Step Application Guide

1. Surface Preparation: Ensure the surface is clean, dry, and free of dust, grease, or loose particles. For wood panels, a light sanding can improve adhesion.
2. Stirring: Stir the gesso thoroughly before use. It can be used straight from the jar. For an ultra-smooth finish, it may be thinned slightly with water.
3. Application on Canvas:
   • Use a wide, stiff brush (synthetic bristle or a cheap household brush) or a foam roller.
   • Apply the first coat using crisscrossing or "X" strokes, working the gesso firmly into the fabric weave.
   • Allow to dry completely (typically 30-60 minutes to the touch).
   • For a smooth surface, lightly sand with fine-grit sandpaper (220+ grit) once dry.
   • Apply 2-3 additional thin coats for optimal coverage and sealing, sanding lightly between coats if desired. Change the brushstroke direction with each coat (e.g., horizontal, then vertical).
4. Application on Wood/Plywood: Apply one thin, even coat. Sand lightly once dry. A second coat may be necessary for very porous wood to achieve full sealing.
5. Drying & Curing Time: Dries to the touch in 30-60 minutes under normal conditions. Allow at least 24 hours for full curing before applying paint. Drying time extends with thicker layers, high humidity, or low temperatures.
6. Clean Up: Clean brushes, rollers, and tools immediately with warm, soapy water before the gesso dries.

Professional Tips & Best Practices

• For an exceptionally smooth surface for detailed work, thin the gesso with up to 10% water, apply with a foam roller, and sand thoroughly between multiple thin coats.
• To create a tinted or colored ground, mix the gesso with a small amount of acrylic paint only after the surface has been sealed with one pure white coat.
• Always apply gesso in a well-ventilated area.
• If the gesso thickens in the jar over time, it can be revived by stirring in a small amount of water.
• Store the jar tightly sealed when not in use to prevent drying out.

Keywords

Koh-i-noor acrylic gesso 500 g, white primer for canvas, artist primer for wood, acrylic and oil paint ground, surface preparation for painting, heavy body gesso, art studio essential, archival painting surface, Koh-i-noor 165512, sealing canvas.