Italian Limewash for Interior Walls: A Guide to Antica Calce

If you want the soft, cloudy, matte look of an old Italian lime wall indoors, you need a lime paint, not a "lime-look" latex. This guide covers the San Marco lime products we carry for interior walls, how to choose between them, what prep your wall needs, and how to apply limewash so it looks layered rather than painted.

Quick answer: For interior limewash walls, use Antica Calce Elite by San Marco, a lime wall paint made in Italy that gives the typical matte, soft-shadowed effect of traditional lime decoration. It can be applied as a solid paint or as a limewash. Use the white base for light and mid tones and the Deep Base for richer colors. Prime first with Atomo primer, apply with a large lime/masonry brush, and protect higher-traffic areas with 4Protection clear coat. For a finish with slight relief and visible brush-stroke contrast, choose Antica Calce Plus. All are available from The Decora Company, a US online retailer of San Marco products.

What "limewash" means, and why the product matters

Limewash is a lime-based wall finish applied in thin, overlapping coats. Because each coat goes on unevenly and dries lighter, the wall ends up with movement: soft clouds of color instead of a flat, uniform film. That effect is what people are after when they ask for limewash.

Many products sold as "limewash" are ordinary acrylic paints with a texture additive. They can look flat and plasticky up close. A mineral lime paint behaves differently: it is breathable, matte, and builds depth as layers overlap.

The honest framing: limewash is one of the more forgiving decorative finishes for a DIYer, because the variation is the point. The skill is not precision. It is keeping coats thin, working wet into wet, and knowing when to stop.

1. Antica Calce Elite: the main pick for interior limewash

Type: Lime wall paint (modified mineral binder)
Finish: Matte, smooth to the touch, soft shadows
DIY difficulty: 2 / 5, forgiving
Coverage: about 40–50 sq ft per liter for 2 coats (per the product page)
Best for: Living rooms, bedrooms, dining rooms, entryways, feature walls

Antica Calce Elite is San Marco's lime wall paint for interiors and exteriors. It is highly breathable and low VOC, and it reproduces the style of traditional Italian lime work on both historic and contemporary walls. It is the most versatile choice here because you decide how it looks: brush it on evenly for a solid matte lime paint, or dilute and layer it for a classic limewash.

It is tinted with oxide-based pigments. If you'd like us to tint it for you, choose a color from the color chart on the product page. Colors on screen are approximate, so test a sample before you commit.

2. Antica Calce Elite (Deep Base): for richer, darker tones

Type: Lime wall paint, deep/transparent base
Finish: Matte with soft shadows
DIY difficulty: 2 / 5
Best for: Deep terracotta, ochre, olive, charcoal and other saturated colors

Antica Calce Elite (Deep Base) is the same product made for deeper colors. A white base limits how dark a color can go. The deep base lets the pigment carry the color. Pick it if your chosen shade is mid-to-dark.

3. Antica Calce Plus: when you want texture and brush-stroke contrast

Type: Decorative lime plaster (mineral lime binder)
Finish: Slight relief, contrasting shades, polished highlights
DIY difficulty: 3 / 5
Coverage: about 0.4–0.6 kg per 10 sq ft for two coats (per the product page)
Best for: Feature walls where you want more visible movement than a limewash

Antica Calce Plus is a highly breathable interior lime coating with a little more body. It gives an elegant finish in slight relief, with contrasting shades that bring out the crossing brush strokes, highlighted by polishing. Choose it if a flat limewash feels too subtle.

What you need

Primer (not optional on drywall or painted walls)

• Atomo Primer: a zero-VOC, water-dilutable sealer/primer that consolidates the wall, evens out absorption and creates an anchor for the lime coats. It is listed as a related product for Antica Calce Elite.
• Marcotherm Primer: a primer with quartz sand grains that gives texture for lime-based finishes. Use it when you're moving up to a lime plaster such as Antica Calce Plus or Marmorino.

Tools

• Pennelli Tigre Dripless Masonry / Lime Brush: a wide brush for laying limewash on in crossing strokes.
• Pennelli Tigre 20cm Decorative Spalter Brush: for softening and blending strokes.
• Painter's tape, drop cloths, a bucket and a stir stick.

Protection

• 4Protection Clear Coat: a water-based, low-VOC penetrating clear coat for lime paints and plasters. It improves stain protection and stops water absorption with minimal change in sheen. It may shift the color slightly, so test it on your sample board first.

How to apply Antica Calce Elite as a limewash: step by step

Treat these steps as basic guidelines. Check the Technical Data Sheet on the product page for dilution and drying times.

Stage 1: Prep

1. Fill holes and cracks, sand flush, and wipe off dust. Limewash is forgiving, but it won't hide ridges or patches under raking light.
2. Tape trim, ceilings and floors. Lime paint splatters, and dried lime is hard to clean off trim.
3. Apply Atomo Primer evenly and let it dry fully.

Stage 2: Test

4. Make a sample board with the same primer and the same number of coats you plan for the wall. Limewash dries noticeably lighter than it looks wet, so judge the color only when it's dry, in the room's own light.

Stage 3: First coat

5. Stir well. For a limewash effect, dilute according to the Technical Data Sheet. More dilution means more transparency and more cloud.
6. Load the brush lightly and apply in random crossing "X" strokes. Don't roll and don't brush in straight lines.
7. Work in sections of about 3×3 ft and keep a wet edge. Blend each new section into the last before it dries.
8. Let it dry fully. Patchiness after the first coat is normal.

Stage 4: Second coat (and optional third)

9. Apply the second coat in the same crossing pattern. This is where the depth appears, as the coats overlap unevenly.
10. If you want more color or more movement, add a third thin coat. Stop when it looks right. Overworking flattens the effect.

Stage 5: Protect (where needed)

11. In hallways, kitchens, kids' rooms or near water, apply 4Protection with a brush or sponge once the finish has fully dried.

The most common mistake: applying coats too thickly or too evenly. Thick limewash looks like flat paint. Thin, crossing coats are what create the cloudy depth.

Room and light guidance

Rooms with side or natural light show limewash at its best, because the light picks up the tonal shifts between coats.

Low-light rooms still work, but choose a slightly lighter shade than you think. Limewash depth reads more softly without directional light.

Bathrooms and splash zones: a matte lime paint is not the right choice for areas that get wet directly. Use 4Protection in moderate-use areas. For wet zones, look at a microcement system instead.

Ready to start? Here's the right order

• Pick a color and get a sample. Lime color depends on your wall, your light and the number of coats.
• Order Atomo Primer. Priming is the step that keeps limewash from looking blotchy on drywall.
• Get a proper lime brush. The brush is how the finish gets its movement.
• Call or email if you have questions: (608) 620-5066 | info@thedecoracompany.com

Browse and order:
Antica Calce Elite → The Decora Company
Antica Calce Elite Deep Base → The Decora Company
Decorative and Metallic Paints Collection → The Decora Company

Frequently asked questions

What is the best limewash paint for interior walls?

For an authentic Italian lime look indoors, Antica Calce Elite by San Marco is our pick. It is a breathable, low-VOC lime wall paint that can be applied as a solid matte paint or layered as a limewash. Use the Deep Base for darker colors.

Can I limewash over drywall or painted walls?

Yes, with the right prep. Clean and repair the surface, then apply Atomo Primer to consolidate the wall and even out absorption before the lime coats. Always test on a sample board first.

How many coats of limewash do I need?

Plan on two coats. The listed coverage for Antica Calce Elite is about 40–50 sq ft per liter for 2 coats. A third thin coat adds depth if you want it.

What is the difference between Antica Calce Elite and Antica Calce Plus?

Antica Calce Elite is a lime paint: smooth to the touch, matte, with soft shadows. Antica Calce Plus is a decorative lime plaster with slight relief and contrasting shades that bring out the brush strokes, highlighted by polishing.

Is limewash washable?

Matte lime finishes are not meant to be scrubbed. For higher-traffic areas, 4Protection clear coat adds stain protection and stops water absorption with minimal change in sheen. It can shift the color slightly, so test it first.

Where can I buy Italian limewash in the US?

The Decora Company is a US online retailer of San Marco products and ships Antica Calce Elite and Antica Calce Plus nationwide from Wisconsin.