How to Paint Different Colors on Inside Corners

Written by m deehn
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The addition of an accent wall can provide an attractive and attention-getting feature to a room, however the actual process of keeping the lines even in the corners where the two different colours meet can sometimes perplex even the most talented of home painters. Yet homeowners shouldn't fret for the technique of keeping that line straight isn't all that hard and is well worth the investment of a bit of time.

Skill level:
Easy

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Things you need

  • Sanding block or sponge
  • Yardstick
  • Primer
  • Paint brush
  • Paint roller
  • Paint
  • Chalk line
  • Drop level
  • Pencil
  • Painter's tape

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Instructions

  1. 1

    Sand the corner seam. Use a rough-grained sanding block or sponge to improve the "line" that runs down the corner. Keep the sponge as straight as possible. Sand both walls, not just one side. Place a three-foot metal ruler or yardstick into the corner groove to check the alignment if desired. Finish sand with a fine-grain sanding sponge.

  2. 2

    Prime both the walls and inside corner with a brush and roller. If the walls have already been primed or previously painted, only apply primer to the sanded areas.

  3. 3

    Paint the light-coloured wall. "Wrap" the light-coloured paint around the inside of the corner onto the adjoining wall an inch or two. Repeat for the second coat (if applied). Let the paint dry for at least a day.

  4. 4

    Draw a straight line from the ceiling to the floor on the light-coloured wall along or very close to the inside corner. Use a chalking line or drop level to ensure the line is vertically straight.

  5. 5

    Run a piece of painters tape (not plain masking tape) down the wall. Hold it against the wall at the highest point and let the rest of the roll "drop" to the floor. Using the line as a guide, carefully press the tape into place. When it is satisfactorily aligned, smooth and flatten to establish the adhesive seal.

  6. 6

    Paint the second (darker-coloured) wall. Apply the paint up to and slightly overlapping the edge of the tape. Do not paint over or beyond the tape onto the lighter-coloured wall. Repeat for the second coat. Allow to dry for 24 hours. Carefully peel off tape.

Tips and warnings

  • Have help when drawing the line to ensure it is straight.
  • Choose complementary colours for the best look.
  • Use a quality tape; cheap products may not give satisfactory results.
  • Keep children out of the work area.
  • Use adequate ventilation when painting.
  • Wear a mask when sanding.

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