Repainting brick can dramatically enhance your home’s curb appeal or refresh an outdated interior. But if the brick has already been painted, you’ll need to approach the project carefully to ensure long-lasting, attractive results. Brick is porous and often irregular, and old paint can conceal surface damage or become a problem if it’s not properly prepped. Whether you’re painting an exterior wall or a fireplace surround, here are five essential tips to guide your repainting project.

1. Assess the Condition of the Existing Paint

Before grabbing a paintbrush, inspect the current paint job closely. Look for signs of peeling, bubbling, cracking, or mildew, any of which can interfere with new paint adhesion. If the previous paint is in poor condition, you’ll need to remove it or sand it down before repainting. Use a wire brush or paint scraper to eliminate loose paint, and consider a chemical paint stripper if the coating is particularly stubborn. A power washer may help for exterior surfaces, but be gentle—brick can be damaged by excessive pressure.

2. Clean the Surface Thoroughly

Even if the existing paint is intact, repainting over a dirty surface will lead to poor results. Dust, soot, cobwebs, and efflorescence (white mineral deposits) must all be removed to allow the new paint to bond effectively. For interior brick, use a vacuum with a brush attachment and a solution of mild soap and water. For exterior surfaces, a pressure washer set to a safe PSI can help, but avoid damaging the mortar. Always let the brick dry completely, ideally for at least 24-48 hours, before applying any new paint or primer.

3. Choose the Right Type of Paint

Not all paints are suitable for brick. For previously painted surfaces, you’ll want a high-quality acrylic latex paint designed for masonry. It offers the flexibility and durability needed to stand up to moisture, temperature fluctuations, and general wear. For exterior projects, make sure your paint is UV-resistant and breathable to prevent trapped moisture from causing blistering or flaking. In damp climates or high-moisture areas, you might also consider a mildew-resistant formula.

4. Prime Only If Necessary

Many repainting projects don’t require priming, especially if the previous coat of paint is still in good shape and you’re using the same color family. However, priming is strongly recommended if:

  • The existing paint is unevenly worn or patchy.
  • You’re making a drastic color change.
  • The brick has been repaired or exposed in spots.
  • The surface is chalky or showing efflorescence.

Use a masonry bonding primer to ensure the new paint adheres properly and maintains an even finish.

5. Use the Right Tools and Techniques

Painting brick isn’t like painting drywall. The uneven surface requires tools that can reach into the grooves and gaps. A thick-nap roller (at least ¾ inch) is effective for covering large areas, while a stiff-bristle brush can help with mortar joints and textured spots. You may also use a paint sprayer for faster coverage, especially on exterior brick, but be sure to back-brush afterward to ensure full penetration.

Apply two coats of paint for even coverage, allowing ample drying time between coats as specified by the manufacturer. Avoid painting in extreme weather conditions, too hot, cold, or humid, as these can affect curing.

Repainting previously painted brick can breathe new life into a space, but success starts with preparation. By properly assessing, cleaning, and painting the surface with the right materials and methods, you’ll achieve a durable, beautiful finish that lasts for years. Taking the time to do it right not only improves aesthetics but also protects your brick from future deterioration.