Quick answer: To apply gold leaf to a painting, brush a thin, even coat of gilding adhesive (size) onto the area you want gilded, wait until it reaches tack (usually 15 to 60 minutes for water-based size, longer for oil-based), lay the leaf onto the tacky area, press gently with a soft brush or cotton, let it set, then burnish away the excess with a dry soft brush. Seal imitation leaf with a clear sealer to prevent tarnish; genuine gold leaf does not need sealing but can be sealed if it will be painted over. Apply leaf to a dry, smooth base, and finish any oil paint on top only after the sealer has cured.
Gold leaf turns a flat painted area into a surface that catches light and shifts as the viewer moves, which is why it has been part of panel painting for centuries and part of contemporary acrylic and mixed-media work for decades. Learning how to apply gold leaf to a painting is less about skill than about patience: the adhesive has to reach the right tack, the leaf has to be handled without touching it, and the burnishing has to wait until everything has set.
This guide covers the materials, the difference between leaf types, a step-by-step method that works on canvas, panel, and paper, how to combine leaf with acrylic and oil paint, and the mistakes that cause wrinkles, gaps, and tarnish. It also compares leaf with liquid gold paints, since for some effects a brush-on metallic is the better tool. The roundup of gold leaf paints and gilding products for artists covers sizes, sealers, and metallic paints that pair with leaf.
Materials You Need
- Leaf. Genuine gold leaf (22 to 24 karat, sold in books of 25 sheets, roughly 3 3/8 inches square), or imitation gold leaf (brass alloy, larger sheets, far cheaper). Loose leaf is free-floating in the book; transfer leaf is pressed onto a tissue backing and is easier for beginners.
- Size (gilding adhesive). Water-based acrylic size, which goes on milky and dries clear and tacky in about 15 to 60 minutes and stays workable for hours. Oil-based size comes in quick (1 to 3 hours to tack) and slow (12 hours) versions and gives a smoother, more durable result.
- Soft brushes. A flat synthetic brush for size, a gilder’s tip or a very soft mop brush for laying and burnishing leaf, and a small round for pushing leaf into corners.
- Sealer. A clear acrylic sealer, shellac, or a gilding-specific topcoat. Essential for imitation leaf, optional for genuine gold.
- Base coat (optional). A red, ochre, or black acrylic underpaint, or a colored bole, to show through tiny gaps and warm the gold.
- Cotton gloves, a soft cotton pad, and a sharp craft knife for handling and trimming.
What Is Gold Leaf Paint, and How Is It Different?
Gold leaf paint is not leaf at all. It is a liquid metallic paint, usually bronze, mica, or aluminum powder in an acrylic or solvent binder, sometimes marketed as “liquid leaf” or “gilding paint.” It brushes on like any paint and gives a metallic sheen, but not the mirror reflection of real leaf. True gold leaf is hammered metal a few millionths of an inch thick, laid as a sheet. The two are often used together: paint for fine lines and small accents, leaf for areas that should glow.
Gold Leaf vs Gold Paint: Which to Use Where
| Factor | Gold leaf | Gold metallic paint |
|---|---|---|
| Reflectivity | Mirror-like, shifts with light | Sparkly or satin; never mirror-like |
| Application | Size, tack time, laying, burnishing | Brush on like paint |
| Fine detail | Hard; leaf tears on thin lines | Easy with a liner brush |
| Large areas | Excellent; even and seamless with practice | Streaky unless several coats |
| Durability | Genuine: permanent. Imitation: tarnishes unless sealed | Good when sealed; some bronze paints darken |
| Cost | Genuine: high. Imitation: low | Low to moderate |
| Painting over | Yes, after sealing | Yes, after drying |
Preparing the Painting Surface
Leaf shows every bump beneath it. The smoother the base, the more mirror-like the result.
- Finish any painting that goes under the leaf. Acrylic must be fully dry, which means at least 24 hours for thicker passages. Oil paint under leaf should be touch-dry and ideally several weeks old.
- Smooth the area. On canvas, a layer or two of acrylic gesso sanded lightly with 400-grit paper gives a smoother bed. On panel, sand the gesso until it feels like eggshell.
- Apply a base color. Traditional gilding uses red bole under gold; a coat of red-brown, ochre, or black acrylic does the same job, warming the gold and hiding pinholes. Let it dry fully.
- Mask the edges. Low-tack tape or masking fluid around the area to be gilded keeps size off the rest of the painting. Size that dries on an unintended spot will grab leaf dust and stay shiny.
How to Apply Gold Leaf to a Painting: Step by Step
Step 1: Apply the size
Brush a thin, even coat of size over the masked area. Thin is the goal; thick size stays soft, shows brush marks through the leaf, and can wrinkle. Water-based size looks milky going on and turns clear as it reaches tack. Remove tape while the size is still wet if the edge needs to be crisp, or leave it until after burnishing if the tape is low-tack and the area is small.
Step 2: Wait for tack
This is where most problems start. Size must be tacky, not wet. Test by touching a knuckle to the edge: it should feel like the sticky side of tape and leave no residue on your skin. Water-based size typically takes 15 to 60 minutes depending on humidity and film thickness. Oil size follows the time on the label. Leaf laid on wet size sinks in and goes dull; leaf laid on size that has dried past tack will not stick.
Step 3: Lay the leaf
For transfer leaf, pick up a sheet by its tissue backing, lay it leaf-side down on the sized area, press gently over the backing with a fingertip or cotton pad, and peel the tissue away. For loose leaf, slide a sheet out of the book onto a gilder’s cushion or a piece of wax paper, lift it with a gilder’s tip (a wide, thin brush charged with a little static by brushing it on your hair or cheek) or with a piece of wax paper, and lower it onto the size. Overlap sheets by about 1/8 inch. Do not try to reposition leaf once it touches size.
Step 4: Press and let it set
Tamp the leaf down with a soft, dry brush or cotton, working from the center outward to push it into texture and remove air pockets. Leave it alone for the time the size label specifies, often 30 minutes to a few hours for water-based size and overnight for oil size.
Step 5: Burnish and clean up
With a soft, dry mop brush, sweep away loose leaf at the edges and overlaps. The flakes (called skewings) can be saved in a jar to fill gaps later. Rub gently with a cotton pad or soft cloth to bring up the shine. Genuine gold on a hard, smooth base can be burnished to a high polish with an agate burnisher; imitation leaf and leaf on canvas should only be rubbed softly.
Step 6: Fill gaps
Holidays, the small bare spots, are normal. Dab a little size on each, wait for tack, and press in a skewing with a dry brush. Alternatively, let the base color show through intentionally; many painters prefer the aged look.
Step 7: Seal
Imitation leaf must be sealed to stop tarnishing; brush or spray on a clear sealer once the leaf has fully set. Genuine gold does not tarnish and is often left unsealed for maximum shine, but seal it if you plan to paint over it or if the painting will be handled. Use a sealer compatible with the paint that will go on top: acrylic sealer under acrylics, and a sealer that oils will adhere to, such as shellac or an acrylic sealer given a week to cure, under oils.
How to Use Gold Leaf Sheets in a Painting: Design Choices
Leaf can be a background, a halo, a shape, or a texture. Each use has its own approach.
- Full background. Gild the whole ground first, then paint the subject on top. The classic icon and Klimt approach. Seal before painting.
- Shapes and accents. Mask the shape with tape or masking fluid, gild inside the mask, and remove the mask after burnishing. Clean geometric edges come from tape; organic edges from brushed size with no mask.
- Broken or distressed leaf. Apply size in a patchy, dry-brushed way so leaf adheres irregularly, or scrub burnished leaf with a stiff brush so the base shows through. Common in abstract and mixed-media work.
- Flakes and fragments. Tear leaf into pieces and scatter them onto sized areas for a confetti or texture effect.
- Over texture. Leaf laid on heavy gel medium or modeling paste follows the relief, giving a hammered look.
Combining Leaf With Acrylic and Oil Paint
Painting over leaf
Both acrylic and oil can be painted over sealed leaf. Acrylic adheres well to an acrylic sealer; thin layers may bead slightly on very smooth leaf, so a first scumbled coat helps. Oil paint over leaf should go on a sealed surface that oils will grip; shellac is traditional, and some gilders use an acrylic sealer then wait a week. Unsealed imitation leaf under oil paint can tarnish from the inside. Transparent glazes over gold, in either medium, are a classic effect: the gold glows through the color.
Leaf over paint
Leaf sits happily on dry acrylic. Over oil paint, wait until the oil is thoroughly dry, since size will not grip on a surface that is still curing and oily. Water-based size on an oil-painted area can bead; oil size is the safer choice over oil paint.
How to Use Gold Leaf Paint With Leaf
Metallic paint does the jobs leaf does badly: thin lines, lettering, tiny dots, and edges that need touching up. Match the paint’s color to the leaf by testing on scrap, since “gold” paints range from greenish to coppery. Apply paint after the leaf is sealed so the sealer does not dissolve or dull the paint. For a review of metallic paints that sit well next to real leaf, see the guide to gold leaf paint for art projects.
Troubleshooting
| Problem | Likely cause | Fix |
|---|---|---|
| Leaf looks dull and sunken | Size was too wet | Wait longer for tack next time; cannot be fixed after the fact except by re-gilding |
| Leaf will not stick | Size dried past tack, or too thin | Re-apply size and wait the correct time |
| Wrinkles and creases | Leaf laid unevenly or dragged | Lower leaf straight down; burnish gently; patch creases with skewings |
| Brush marks visible through leaf | Size applied too thick | Thinner coats; sand the base smoother |
| Many small gaps | Rough surface or thin size | Fill with skewings, or accept as an aged effect |
| Imitation leaf turning brown or green | Not sealed; exposed to air or fingerprints | Seal all imitation leaf; wear gloves |
| Leaf dust stuck everywhere | Size got outside the masked area | Mask carefully; wipe stray size with a damp cloth before it tacks |
Safety and Handling Notes
Genuine and imitation leaf are safe to handle, but the sheets are so thin that breathing hard will send them flying. Close doors and windows, turn off fans, and keep the book closed between sheets. Oil-based size and shellac need ventilation; water-based size does not. Wear cotton gloves or keep hands very dry, since skin oil tarnishes imitation leaf and makes any leaf stick to fingers. Store leftover leaf flat in its book, away from humidity.
FAQs
Can you apply gold leaf directly to canvas?
Yes, on primed canvas with size. A smoother gesso layer gives a shinier result; raw canvas texture will show through the leaf. Some painters add a base color first to warm the gold.
How long does gilding size take to get tacky?
Water-based acrylic size typically reaches tack in 15 to 60 minutes and stays workable for several hours. Oil-based size ranges from 1 to 12 hours depending on the type. Test with a knuckle: tacky like tape, no residue.
Can you paint over gold leaf?
Yes. Seal the leaf first with a compatible sealer, then paint with acrylic or oil. Transparent glazes over sealed gold let the metal glow through the color.
Does gold leaf need to be sealed?
Imitation leaf must be sealed or it tarnishes. Genuine gold does not tarnish and can be left unsealed for maximum shine, but sealing is wise if the piece will be handled or painted over.
What is the difference between loose and transfer leaf?
Loose leaf floats freely between the book’s pages and is lifted with a gilder’s tip; it burnishes brightest. Transfer leaf is attached to tissue and is pressed on like a decal, which is easier for beginners and for vertical surfaces.
Can I use glue or acrylic medium instead of gilding size?
Thinned acrylic medium or gloss medium can work in a pinch because it dries tacky before fully curing, but the window is short and results are less consistent. Proper gilding size is inexpensive and much more reliable.
Next Step
Practice on a scrap panel first: one patch of size, one sheet of imitation leaf, and a sealer. After two or three tries you will recognize tack by feel, and the method transfers directly to a real painting.
For the adhesives, sealers, and metallic paints that make gilding easier, the roundup of the best gold leaf paint for art compares options by finish, durability, and how well each pairs with real leaf.
