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How to Blend New Paint with Old Paint on a Wall?

Published in Painting Techniques 4 mins read

To best blend new paint with old paint on a wall, use the exact same can of paint and apply it sparingly with a small foam roller or similar tool, confining the touch-up to the smallest area possible and feathering the edges.

Blending new paint with old paint can be tricky, but by following these guidelines, you can minimize noticeable differences and achieve a more seamless finish. Here's a breakdown of how to tackle this project successfully:

Key Steps to Blending New Paint with Old Paint:

  1. Use the Same Paint: The single most crucial factor is using the exact same can of paint as was originally applied. This ensures the same color, sheen, and formulation. If you don't have the original paint, matching it perfectly is very difficult.
  2. Prepare the Surface: Clean the area you'll be painting. Remove any dirt, dust, or grime with a damp cloth and mild detergent. Allow the area to dry completely before painting.
  3. Minimal Application: Apply the new paint sparingly. Avoid applying too much paint, as this can create a noticeable difference in texture and sheen. Less is more!
  4. Use a Small Application Tool: Opt for a small foam roller or a brush designed for touch-ups. A small tool allows for more controlled and precise application.
  5. Feather the Edges: Feathering is a technique where you gradually blend the new paint into the old paint by applying less pressure at the edges. This creates a softer transition and minimizes a hard line. To feather, apply the paint to the damaged area, then lightly drag the roller or brush outward, gradually lifting it away from the wall to thin the paint layer at the edges.
  6. Multiple Thin Coats (If Needed): If one coat doesn't provide sufficient coverage, apply additional thin coats, allowing each coat to dry completely before applying the next. Avoid applying thick coats, as this can lead to uneven drying and a noticeable texture difference.
  7. Consider the Lighting: Evaluate the repaired area under different lighting conditions (natural light, artificial light). This will help you identify any remaining imperfections and make further adjustments as needed.

Why This Works:

  • Color Consistency: Using the same can of paint guarantees identical color.
  • Sheen Consistency: Paint sheen (matte, eggshell, satin, semi-gloss, gloss) affects how light reflects off the surface. Using the same paint ensures the same sheen level.
  • Application Technique: Applying the paint sparingly and feathering the edges prevents a hard line between the old and new paint.

What to Do if You Don't Have the Original Paint:

Unfortunately, achieving a perfect match without the original paint is very difficult. Here are your options, in order of best to worst:

  • Search: Thoroughly check garages, basements, and storage areas. You might be surprised what you find!
  • Paint Matching: Take a chip of the old paint (at least 1 square inch) to a paint store for color matching. They can use a spectrophotometer to analyze the color and create a custom mix. Be aware that even a professional match may not be perfect due to factors like aging and fading of the original paint.
  • Repaint the Entire Wall (or Room): This is the most drastic, but also the most effective, solution. Repainting the entire wall or room guarantees a consistent color and sheen.

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