How to Match and Touch Up Exterior Paint

Fading is the natural tax paid by every home exterior exposed to the elements. UV light and moisture conspire to shift the pigment of your siding, making a straight 'off-the-shelf' paint match nearly impossible. Doing this right requires more than just finding the old leftover can in the garage; it requires a systematic approach to blending new chemistry with aged surfaces. Success here isn't just about color; it is about texture and sheen. If you simply dab a fresh glob of paint over a scrape, you will be left with a patch that catches the light differently than the surrounding wall. The goal is to make the touch-up indistinguishable from the rest of the siding by tapering the application and properly prepping the substrate.

  1. Wash Away the Oxidation. Scrub the damaged spot and the surrounding six inches with a mix of water and mild dish soap using a soft brush. Rinse thoroughly and allow the surface to dry completely before proceeding.
  2. Feather the Loose Edges. Use a putty knife or a carbide scraper to gently remove any peeling or flaking paint edges. Lightly sand the transition area with 120-grit paper to smooth the transition between the bare siding and the existing paint layer.
  3. Match the Faded Reality. Take a clean, paint-covered paint chip—at least the size of a quarter—to a paint store for an optical color scan. They will analyze the current, faded color to create a custom tint that matches the house as it looks today.
  4. Seal the Bare Surface. Apply a high-quality exterior primer to any exposed wood or masonry. Ensure the primer does not extend beyond the scraped area to avoid creating unnecessary bumps.
  5. Stipple the Color In. Dip a high-quality sash brush into your custom-matched paint and dab it onto the center of the repair. Use light, stippling motions to mimic the texture of the original paint roller or sprayer finish.
  6. Blend Into the Invisible. As the paint begins to set, use the tip of your brush to lightly drag the edges of the wet paint into the surrounding old paint. This creates a gradient effect that hides the boundary line.