Paint a Room (12×12 Bedroom)

Most "bad paint jobs" come from skipping prep, not bad rolling. Budget 70% of your time for the boring steps and the painting itself becomes easy.

Difficulty: Medium Time: 1 long day · or 2 short days Cost: $80–$150
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VentilationOpen windows and run a fan. Even low-VOC paint shouldn't sit in a closed room you're sleeping in tonight.

Tools

Materials

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Steps

  1. 1

    Empty and prep the room

    Move everything to the center, cover with one big drop cloth. Remove outlet covers and switch plates — bag the screws with each one.

  2. 2

    Patch and sand

    Fill nail holes with spackle. Once dry, sand smooth. Wipe walls with a damp cloth to remove dust.

    Tip: Run your hand across the wall. Any bumps you feel will telegraph through the paint — sand them now.
  3. 3

    Tape the edges

    Tape along ceiling line, baseboards, door/window trim. Press the inner edge firmly with your putty knife — that's how you get a clean line.

  4. 4

    Cut in first

    With the angled brush, paint a 2–3" band along ceilings, corners, trim, and outlets. Work in 4-foot sections so the cut-in stays wet when you roll.

  5. 5

    Roll out the walls

    Load the roller in the tray, roll out excess on the ramp. Apply in a "W" pattern in a 3x3 ft section, then fill it in with vertical strokes. Maintain a wet edge as you move.

    Tip: The classic mistake: pushing too hard. Let the roller do the work — heavy pressure leaves stipple.
  6. 6

    Second coat (if needed)

    Recoat after 2–4 hours depending on paint. Always check by walking the room with the sun coming in — thin spots show up best with raking light.

  7. 7

    Pull the tape early

    Pull tape while paint is still slightly tacky (about an hour after the last coat) to avoid tearing dried paint.

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