How to Paint Drywall Corners in New Construction

In new construction, the seams between sheets of drywall are connected together by drywall tape. This tape is sealed in place by either spackle or drywall mud. Because these substances absorb paint at slower rates than the drywall, itself, they tend to show through after the paint has dried. Professional painters call this "flashing through." If you are planning to paint drywall corners, you must employ a specific application strategy, or you will end up with an uneven finish.

Heavy-duty fabric drop cloth
Professional painter's tape
Satin latex paint
5-gallon bucket
Wooden stir stick
Measuring cup
Roller frame
Nap roller cover
Roller extension pole
3- to 4-inch latex paintbrush

Instructions

- 1
  Cover flooring beneath the drywall corners with heavy-duty drop cloths. Cover portions of the new construction you do not want painted with painter's tape.
- 2
  Pour 2 gallons of satin latex paint into a 5-gallon bucket. Dilute the paint by stirring in 2 ounces of water per each gallon of paint. Stir the diluted paint for 5 minutes with a wooden stir stick.
- 3
  Slip the nap cover onto the roller frame. Attach the roller frame to an extension pole.
- 4
  Apply the diluted satin paint to the drywall corners using the roller. Apply the paint slowly, as diluted paint tends to splatter if applied too quickly. Smooth the wet paint, using a 2- to 4-inch latex paintbrush.
- 5
  Wait one hour for the paint to dry. Apply two additional coats of the diluted paint. Wait 1 hour between each coat.

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