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How to Change Colors When Painting Curved Drywall Corners

Curved drywall corners (usually referred to as bullnose corners) soften corners and are often seen in Spanish-style contemporary homes. When changing paint colors to transition from one to another, you're presented with a small challenge: making a clean, straight line on the curved corner or seamlessly blending one color into the other. With blue painter's tape and a little care, it's not difficult to make a straight line transition even on textured corners. If you prefer the blended look, there's a nifty tool that will make that easy if you're not much of an artist.

Painting a Straight Line

  1. Paint the first wall with the most dominant color, wrapping the paint well around the bullnose corner. Let it dry for at least 4 hours.

  2. Lay a strip of blue painter's tape either straight down the center of the curve or to one side of the curve. Press it down carefully with your fingers to ensure a tight seal. Use a chalk line to ensure a perfectly straight line, but it's usually enough to "eyeball" it.

  3. Paint your second color up to the tape with either a brush or roller. Avoid pushing the paint towards and under the tape. Two thin coats is better than one thick coat.

  4. Wait at least another 4 hours before slowly and carefully removing the tape. If the tape was rubbed down carefully and the paint allowed to dry for at least 4 hours, it should be perfect. If there are any irregularities, fix them with an artist's brush.

Painting a Blended Line

  1. Paint both walls to the corner, allowing the paint to meet up. It's not necessary to have the line perfectly straight.

  2. Pour a little of each color into a large plate or roller tray. Working quickly, mix them together to get several shades and stipple them onto the corner with an artist's brush so they blend seamlessly.

  3. Use a roller tool to blend the colors together very efficiently, following the product directions. (See Resources.)

Warning

  • Regular beige masking tape will not give you a clean line, especially on textured drywall.