How to Prepare Your Walls for Matte Finish Paint

Mariam Khalifa
5 min readJun 21, 2024

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Matte finish paint, also known as acrylic matt emulsion paint, is a popular choice for its sophisticated look and ability to hide imperfections. However, unlike its glossier counterparts, matte paint offers little room for error. A smooth, clean surface is paramount to achieving a flawless, even finish. This guide will take you through the detailed process of preparing your walls for a stunning matte paint transformation.

Gathering Your Arsenal

It is important that you have all the tools and materials you need before diving in:

  • Drop cloths and plastic sheeting: Protect your floors and furniture from paint splatters.
  • Cleaning supplies: Bucket, sponges, dish soap, and a degreaser (for greasy surfaces).
  • Sandpaper (various grits): 80-grit for heavy-duty smoothing, 120-grit for general sanding, and a sanding block for finer work.
  • Spackle or joint compound: For filling holes and cracks.
  • Putty knife: To apply and smooth spackle.
  • Painter’s tape: To mask baseboards, trim, and light switch covers.
  • Primer (optional): Consult your paint for specific recommendations.
  • Paint roller with extension pole: Choose a high-density foam roller for a smooth finish.
  • Paint tray with liner: Makes cleanup easier.
  • Paintbrush: For cutting in around edges and trim.
  • Safety glasses and dust mask: Protect yourself from dust and paint particles.

Step 1: Clearing the Canvas — Cleaning Your Walls

To ensure optimal paint adhesion, the surface must be clean. Begin by removing any wall hangings, pictures, or fixtures.

  • Dust Removal: Use a soft cloth or duster to eliminate cobwebs and surface dirt.
  • Deep Cleaning: Wash the walls with a solution of warm water and a mild dish soap. For greasy surfaces, like kitchens, use a degreaser solution followed by clean water. Avoid abrasive cleaners or sponges that can damage the surface.
  • Rinse and Dry: Thoroughly rinse the walls with clean water and allow them to dry completely. This can take several hours, so plan accordingly.

Step 2: Patching Up Imperfections — Filling Holes and Cracks

Once your walls are clean, inspect them for imperfections.

  • Small Holes: For minor holes (think nail holes or small cracks), use a spackle specifically designed for small repairs. Apply the spackle with a putty knife, ensuring it fills the hole.
  • Large Holes: For larger holes or cracks, use a joint compound. Apply the joint compound in thin layers, allowing each layer to dry completely before adding another. Sand smooth once it is fully dry.

Step 3: Sanding for a Smooth Finish

Sanding is vital for a flawless matte paint finish.

  • Heavy-Duty Smoothing: If your walls have significant imperfections or uneven textures, use 80-grit sandpaper to knock down high spots and achieve a generally smoother surface.
  • General Smoothing: Once the major imperfections are addressed, use 120-grit sandpaper to create a uniformly smooth surface. Sand with a light touch, focusing on removing bumps and ridges.
  • Finer Details: Use a sanding block with 120-grit sandpaper to smooth around corners, trim, and any areas missed with the larger sheets.
  • Dust Removal: After sanding, thoroughly clean the walls with a damp cloth to remove dust particles. Allow the walls to dry completely.

Step 4: Priming for Perfection (Optional)

While not always necessary, using a primer can significantly enhance the final outcome of your matte paint job. Here’s when priming is most beneficial:

  • Painting over a Different Colour: If you’re painting over a drastically different colour, primer helps ensure even coverage with the new paint.
  • Uneven or Porous Surfaces: Primer creates a uniform surface, allowing for better paint adhesion and minimising paint absorption, especially on porous surfaces.
  • Freshly Patched Walls: Primer helps seal the spackled or patched areas, preventing them from showing through the final paint job.

Choosing the Right Primer:

  • Consult Your Paint: Many matte paints recommend a specific primer for optimal results.
  • Stain Blocking: If you’re covering stains, choose a stain-blocking primer.
  • Water-Based vs. Oil-Based: Use a water-based primer for most interior walls. Oil-based primers are better suited for surfaces with heavy stains or water damage (consult a professional for such situations).

Applying Primer:

  • Follow the Manufacturer’s Instructions: Different primers may have varying application techniques.
  • General Application: Use a paint roller with a high-density foam sleeve for a smooth finish.
  • Apply the primer in thin, even coats, following the direction of sunlight, to reveal any missed spots.
  • Allow the primer to dry completely, as per the manufacturer’s recommendations, before proceeding.

Step 5: Masking and Protecting Your Surroundings

Once your walls are prepped and primed (if necessary), it’s time to shield the areas you don’t want painted.

  • Drop Cloths and Plastic Sheeting: Lay down drop cloths to cover your floors and furniture. Secure them with painter’s tape for added protection. Use plastic sheeting to drape over larger furniture pieces you can’t move.
  • Painter’s Tape: Apply painter’s tape to baseboards, trim, windowsills, doorways, and around light switches and outlet covers. Press the tape firmly to create a clean seal.

Step 6: Painting Like a Pro — Applying the Matte Finish

Now comes the exciting part — transforming your walls with your chosen matte paint!

  • Choosing the Right Paint: Opt for high-quality matte finish paint specifically designed for interior walls. Consider factors like paint coverage, durability, and cleanability.
  • Mixing the Paint: Stir the paint thoroughly with a mixing stick for a few minutes before use. This ensures even colour distribution throughout the can.

Applying the Paint:

  • Cutting In: Start by using a paintbrush to “cut in” around the edges of your walls, including corners, trim, and baseboards. This ensures clean lines and minimises the risk of roller marks on your trim.
  • Rolling the Paint: Pour a small amount of paint into your paint tray. Dip the roller into the paint and roll it against the textured liner to remove excess paint. Work in sections and apply the paint smoothly, evenly.
  • Maintaining a Wet Edge: Work in small sections (around 2–3 feet) to maintain a “wet edge.” This prevents visible drying lines between sections.
  • Applying Multiple Coats: Most matte paints require two coats for full coverage. Allow the first coat to dry completely, as per the manufacturer’s instructions before applying the second coat.

Step 7: The Final Touches

Once the final coat of paint is dry, it’s time to remove the masking and clean up.

  • Carefully Peel the Tape: Slowly and carefully remove the painter’s tape at a 45-degree angle to prevent pulling off any freshly painted surfaces.
  • Cleaning Up: Wipe away any paint splatters on trim or baseboards with a damp cloth. Wash your paint tools with warm water and soap.
  • Let it Breathe: Allow the painted walls to cure completely before hanging pictures or placing furniture back against them. Refer to the paint manufacturer’s recommendations for curing time.

Congratulations! By following these detailed steps, you’ve successfully prepped your walls for a beautiful matte finish paint job. The smooth, flawless surface will highlight the rich depth of the matte paint, creating a sophisticated and elegant look in your space.

Bonus Tips:

  • Good Lighting: Ensure good lighting while prepping and painting your walls. This helps you identify and address imperfections more effectively.
  • Work Methodically: Work in sections to avoid overwhelming yourself and ensure even paint application.
  • Take Breaks: Painting can be tiring. Take breaks to avoid mistakes and maintain focus.
  • Enjoy the Process! Transforming your space can be a rewarding experience. Take pride in your DIY skills and enjoy the beautiful outcome.

By following these comprehensive steps and handy tips, you’ll be well on your way to achieving stunning matte finish walls that will elevate the look and feel of your entire living space.

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