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How to Paint Uneven Walls?

Published in Wall Painting 4 mins read

Painting uneven walls requires careful preparation and technique to achieve a smooth, professional finish.

Preparing Uneven Walls for Painting

Before you pick up a paintbrush, thorough preparation is crucial for uneven surfaces. This step helps minimize the appearance of imperfections and ensures better paint adhesion.

  1. Clean the Surface: Start by cleaning the walls to remove dirt, dust, grease, and cobwebs. A simple mixture of water and mild detergent works well. Rinse thoroughly and let the wall dry completely.
  2. Inspect and Fill Imperfections: Examine the wall closely for cracks, holes, or uneven areas.
    • Use a joint compound or spackle to fill in any nooks or crannies, small holes, or cracks.
    • For larger or deeper imperfections, you might need multiple layers of compound, allowing each layer to dry before applying the next.
    • Apply the compound smoothly, slightly overfilling the imperfection.
  3. Sand the Filled Areas: Once the filler is completely dry, sand the patched areas smooth with fine-grit sandpaper (around 120-150 grit). Feather the edges into the surrounding wall so the patch isn't noticeable.
  4. Clean Dust: Wipe down the walls again to remove all sanding dust.
  5. Prime the Surface: Apply a good quality primer. Priming helps seal the patched areas, provides a uniform base for the paint, and improves paint adhesion. Choose a primer suitable for the type of wall surface and paint you'll be using.

Painting Techniques for Uneven Walls

Once the preparation is complete and the primer is dry, you can begin painting. Using the right techniques can help disguise minor surface irregularities.

Cutting In

Another popular technique for painting uneven walls is called “cutting in.” This involves carefully painting the edges and corners before rolling the main areas.

  • Use painter's tape to outline edges, including where walls meet the ceiling, baseboards, and around door or window frames. This creates clean lines.
  • Apply paint within those lines using a roller or brush. A good quality angled brush is ideal for cutting in sharp lines.
  • Cut in sections roughly 4-6 feet long at a time.

Rolling

For the main wall areas:

  • Use a roller or brush to apply paint. A roller with a thicker nap (e.g., 1/2 inch or 3/4 inch) can sometimes work better on slightly uneven surfaces as it gets into minor depressions, but test a small area first.
  • Apply paint in smooth, even strokes, working in sections. Roll vertically, then cross over horizontally, and finish with light vertical strokes to maintain a consistent texture.
  • Overlap your roller passes slightly to avoid lines.

Choosing Paint & Tools

  • Paint Finish: A matte or flat finish is generally recommended for uneven walls as it absorbs light and helps hide imperfections. Glossy or satin finishes reflect light and will highlight every bump and dip.
  • Brushes & Rollers: Use high-quality tools appropriate for your paint type (latex or oil-based).

Tips for Success

  • Always allow adequate drying time between coats of primer and paint.
  • Apply at least two coats of paint for best coverage and durability.
  • Maintain a wet edge while painting to prevent lap marks.

By following these steps, you can significantly improve the look of uneven walls with a fresh coat of paint. Remember to use a joint compound or spackle to fill in any nooks or crannies before priming the surface.

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