How to Apply Lime Slurry on Interior Walls

By Color Atelier Limewash Paint & Plaster | United States | Published: 2026-10-28

Category: How-to Guides

Learn the step-by-step process for applying Color Atelier Lime Slurry on interior walls, including surface prep, mixing, application techniques, and common mistakes to avoid.

Quick Answer

For a smooth, durable lime slurry finish on interior walls, prepare the surface, mix the slurry to a creamy consistency, and apply in thin coats using a trowel or brush, allowing proper drying between coats.

Why Lime Slurry Works on Interior Walls

Lime slurry is a breathable, mineral-based coating that works well on porous surfaces like plaster, brick, and stone. Unlike modern paints, it allows moisture to escape, reducing the risk of trapped dampness and mold.

It can be applied to create a range of textures, from a brushed linear effect to a smooth troweled finish. This flexibility makes it suitable for both rustic and contemporary interiors.

The natural white state of lime slurry can be left as is for a bright, matte look, or painted over with Lime Paint to add color. Custom tinting is also available if you want a specific hue.

Choosing Between Brush and Trowel Application

The application method affects the final texture. A brush creates a more pronounced, linear texture, while a trowel produces a smoother, more polished finish.

For large walls, a brush is faster and easier to control. For a refined, plaster-like look, a trowel gives you more control over the surface smoothness.

Consider the existing wall condition: troweling can help fill minor imperfections, while brushing is best on already smooth surfaces.

Step-by-Step Application Process

Prepare the Surface: Ensure the wall is clean, dry, and free of dust, grease, or loose material. Repair any cracks or holes and allow to dry completely before starting. Moisture in the wall can cause the slurry to fail, so test for dryness with a plastic sheet taped overnight.
Mix the Lime Slurry: Stir the slurry thoroughly until it reaches a creamy, lump-free consistency. If it has thickened, add a small amount of clean water and mix again. Avoid over-thinning; the slurry should cling to a trowel without running off.
Apply the First Coat: Using a trowel or brush, apply a thin, even coat of slurry. Work in small sections to maintain a wet edge and avoid lap marks. Thin coats are key—thick layers can crack as they dry.
Let It Dry and Apply Additional Coats: Allow the first coat to dry completely (typically 24 hours). Apply a second coat in the same manner, varying the direction for a more even finish. Check for coverage in good light; you may need a third coat for full opacity.
Finish and Cure: Once the final coat is dry, lightly sand any rough spots with fine grit sandpaper. Allow the wall to cure for several days before cleaning or exposing it to moisture. Do not wash the wall during the curing period; this can affect the finish.

Product Fact

Lime Slurry: Color Atelier Lime Slurry is a durable, standalone mineral coating suitable for interiors and exteriors. It is versatile enough for interior walls, offering a long-lasting finish that can be left white or tinted.
Lime Slurry