How to Correct Blotchy Walls

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Decorative walls can be a focal point in your house. Yet if the wall looks blotchy, it can take away from the beauty of the paint application. Blotchy walls may be due to the lack of a sealant applied to the wall first to prevent the walls from soaking up too much of the paint. This problem causes the paint to dry unevenly. Warped drywall also can cause a blotchy appearance to the walls.

Things You'll Need

  • Level
  • Jigsaw
  • Drywall
  • 1/2-inch drywall screws
  • No. 2 Phillips screwdriver
  • Joint compound
  • Drywall tape
  • White or gray primer
  • Paint roller
  • Check the drywall for straightness by placing a level against the wall. Replace warped drywall if there is a lot of uneven surface causing the wall to look blotchy. Cut drywall with a jigsaw.

  • Screw in new drywall with 1/2-inch drywall screws and a No. 2 Phillips screwdriver. Apply joint compound and tape to the seams. Also, spread joint compound over the heads of the screws. Seal the wall with primer and paint.

  • Apply primer to the wall if the blotchy discoloration comes from the previous color showing through the new paint. Use gray primer to cover over dark paint or white primer to cover over light-colored paint. Allow it to dry.

  • Apply two coats of paint over the wall. Place the roller at the top of the wall. Move downward in a continuous motion to prevent lines where the paint overlaps.

Tips & Warnings

  • If you have blotchy walls in the bathroom, this could be due to mold or mildew buildup. If mold has set into the drywall, you will have to tear the damaged drywall out and replace it.

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References

  • Photo Credit BananaStock/BananaStock/Getty Images
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