Burnished concrete walls, also known as “cement finish walls,” have become a popular choice in modern interior design. Their industrial yet elegant appearance adds texture and depth to a space while maintaining a minimalist and sophisticated look. When done correctly, this finish provides a seamless, durable, and aesthetically pleasing surface that enhances both residential and commercial interiors.
However, achieving a flawless burnished concrete wall requires careful preparation, the right materials, and proper application techniques. Mistakes can lead to uneven textures, cracks, or poor adhesion, affecting both durability and visual appeal.
In this detailed guide, we will cover everything you need to know to create stunning burnished concrete walls without errors, from preparation to finishing touches.
Understanding Burnished Concrete Walls
Burnished concrete walls mimic the look of raw concrete but with a smoother, more refined finish. Unlike exposed concrete, which requires structural casting, burnished concrete is achieved using specific plastering techniques and finishing treatments.
This finish is versatile and works well in various interior styles, including industrial, modern, minimalist, and rustic. It pairs beautifully with wood, metal, glass, and natural stone elements, making it a flexible design choice for living rooms, bedrooms, kitchens, and even bathrooms.
Essential Materials and Tools
Before starting the application process, gather the right materials and tools to ensure a professional-looking result.
Materials:
- Cement-based plaster or special burnished concrete mix – Provides the desired texture and durability.
- Acrylic or polymer additives – Improves flexibility and prevents cracks.
- Primer or bonding agent – Ensures strong adhesion to the wall surface.
- Sealer or protective finish – Helps prevent stains and increases durability.
Tools:
- Trowels (stainless steel or plastic) – For smooth application and burnishing.
- Spatula – Useful for detailed edges and corners.
- Sandpaper (fine and medium grit) – To refine texture.
- Roller or brush – For applying primer and sealant.
- Mixing bucket and drill mixer – Ensures an even consistency of the plaster.
With these materials and tools prepared, you can move on to the application process.
Step-by-Step Guide to Applying Burnished Concrete Walls
1. Surface Preparation
A well-prepared surface is essential for achieving a smooth, durable finish.
- Ensure the wall is clean, dry, and free of dust, grease, or loose paint. If the surface has imperfections, fill any cracks or holes with a suitable filler.
- If applying over drywall, use a primer or bonding agent to enhance adhesion. A rougher surface, such as bare plaster, may require light sanding to improve grip.
- Mask off adjacent walls, floors, and ceilings with painter’s tape to protect them from accidental splatters.
2. Mixing the Concrete Plaster
Proper mixing ensures an even consistency and smooth application.
- In a mixing bucket, combine the cement-based plaster with water according to the manufacturer’s instructions.
- For enhanced flexibility and crack resistance, add acrylic or polymer additives.
- Use a drill mixer to blend the mixture until smooth and lump-free. Let it sit for a few minutes before re-mixing.
3. First Coat Application
The first layer establishes the base texture and adhesion.
- Using a trowel, apply a thin, even layer of the concrete plaster onto the wall. Keep the thickness uniform (about 1–2 mm).
- Work in small sections to maintain control over texture and drying times.
- Let the first coat dry completely (usually 4–6 hours, depending on humidity).
4. Second Coat for Depth and Smoothness
The second layer enhances the final look and ensures uniformity.
- Apply another thin coat, using sweeping, random movements with the trowel to create a natural, organic texture.
- Smooth out any uneven areas while keeping the wall slightly varied in texture for an authentic concrete effect.
- Let it dry for at least 12–24 hours before moving to the finishing process.
5. Burnishing and Refining the Surface
Burnishing is the process of compressing and polishing the surface to achieve a sleek, semi-gloss finish.
- Use a clean trowel or spatula to lightly press and smooth the surface in circular motions.
- For a more polished look, lightly sand the wall with fine-grit sandpaper (400–600 grit).
- If a more rustic, matte texture is preferred, skip the sanding step and leave the surface naturally textured.
6. Sealing and Protecting the Finish
Sealing the surface prevents stains, moisture damage, and wear over time.
- Apply a high-quality concrete sealer with a roller or brush. Choose between matte, satin, or glossy finishes based on preference.
- For added protection, consider waxing the surface, especially in high-traffic areas or bathrooms.
- Allow the sealer to dry completely before placing furniture or decorations against the wall.
Common Mistakes and How to Avoid Them
Despite careful planning, certain mistakes can compromise the final result. Here’s how to avoid the most common issues:
- Uneven texture: Apply thin, consistent layers and avoid excessive trowel pressure.
- Cracking: Use polymer additives and ensure each layer dries properly before applying the next.
- Poor adhesion: Always apply a bonding primer on smooth surfaces like drywall.
- Over-polishing: Burnish the surface gently to avoid removing too much texture.
Design Ideas and Applications
Burnished concrete walls work in various interior settings, adding character and depth to different rooms.
- Living rooms: Create a feature wall to contrast with wood and metal furniture.
- Bedrooms: Add an industrial touch behind the bed for a statement look.
- Kitchens: Pair with wooden cabinets and stainless-steel appliances for a modern appeal.
- Bathrooms: Use waterproof sealers to protect against moisture while maintaining a spa-like ambiance.
For a unique effect, experiment with tinted concrete finishes by adding colour pigments to the plaster mix, creating warmer or cooler tones to suit different design styles.
Final Thoughts
Burnished concrete walls offer a sophisticated and timeless aesthetic that enhances any interior. By following the correct steps—from surface preparation to sealing—you can achieve a professional, mistake-free finish that is both durable and visually stunning.
Whether you’re creating an industrial loft vibe, a modern minimalist space, or a rustic-chic home, this technique provides versatility and elegance. With careful execution, your concrete-finished walls will become a striking focal point that elevates the entire room.