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How to Paint a Room

Home/Resources/Paint & Walls/Painting a Room
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Written & researched by Priya Anand DIY & Tools Editor
Updated August 2026
Golden-hour view of a person rolling fresh paint onto an interior wall

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Painting a room is the most beginner-friendly DIY project in the house — a weekend of work, no special skills, and no permit or pro required. Budget most of one day for prep and the first coat, and a few hours the next for the second coat and cleanup. Materials for an average bedroom run about $80 to $200. The whole job is well within reach for a first-timer; the difference between an amateur and a professional result is almost entirely in the prep and the order of operations, both of which are easy to get right once you know them.

How to Paint a Room — The Home Depot

Step-by-step: painting a room

  1. Clear and protect. Move furniture out or to the center and drape it. Cover the floor with canvas drop cloths (they grip better than plastic). Remove switch and outlet covers, and loosen light fixtures.
  2. Clean and repair. Wash greasy or dusty walls and let them dry. Fill nail holes and dents with spackle, sand smooth at 120-grit, and wipe off the dust. A wall is only as smooth as its prep.
  3. Tape and prime. Tape off trim and the ceiling line if you are not confident cutting freehand. Spot-prime patches and any bare drywall so they do not flash through.
  4. Cut in the edges. With a 2.5-inch angled sash brush, paint a 2- to 3-inch band along the ceiling, corners, and trim. Work one wall at a time so the band stays wet for rolling.
  5. Roll the field. Load a 3/8-inch nap roller for smooth walls (1/2-inch for lightly textured). Roll a large "W" or "M" about 3 feet wide, then fill it in without lifting, keeping a wet edge. Do not press hard.
  6. Maintain a wet edge. Always roll into the still-wet area you just painted. Stopping and restarting on dry paint is what creates lap marks.
  7. Let it dry, then recoat. Wait the label's recoat time (usually 2 to 4 hours). Apply the second coat the same way. Two coats is standard.
  8. Paint the trim and pull the tape. Do trim last. Pull tape while the final coat is still slightly wet, at a low angle, for the cleanest line.
Close-up detail of the material being worked in a paint & walls project, in soft overcast light

Tools and materials

The core kit is a 2.5-inch angled brush, a roller frame with an extension pole, roller covers in the right nap, a 5-gallon bucket with a grid or a tray, painter's tape, drop cloths, and paint. Paint quality is the single biggest lever on the result — see our best interior paint roundup for lines that cover in two coats and level out smoothly. The roller you choose controls the wall texture, and clean-edge painter's tape saves hours of touch-up. For a whole-house repaint or big open walls, a paint sprayer speeds coverage dramatically, though it needs more masking.

Wide view of a person rolling fresh paint onto an interior wall, in soft overcast light

Mistakes that ruin a paint job

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More from this hub: Paint & Walls · Cutting in without tape · Priming a wall · Painting trim · Best interior paint · How we rank

Straight Answers

Frequently Asked

What order should you paint a room in?

Ceiling first, then walls, then trim and doors last. Painting overhead throws spatter, so doing the ceiling before the walls means any specks land on surfaces you have not finished yet. Within each surface, cut in the edges with a brush first, then roll the field while the cut-in is still wet so the two blend. Trim goes last because it is easiest to cut a clean line where wall meets trim by lapping wall paint slightly onto the trim, then covering it with trim paint. This order is the standard every pro follows for a reason.

How many coats of paint does a room need?

Two coats in almost every case. One coat rarely covers evenly, even with premium paint that markets itself as one-coat, because the first coat soaks unevenly into the wall and the roller leaves subtle density differences. A second coat evens the color and sheen and is where the finish actually comes from. You may need a third only when going from a very dark color to a light one, or over a stain. Always prime bare drywall or patched spots first; primer is not one of your color coats.

How long should you wait between coats of paint?

Most latex wall paints are recoatable in 2 to 4 hours at 70 degrees Fahrenheit and normal humidity. The label gives the exact figure and it is worth following. Recoating too soon lifts and drags the first coat, leaving roller marks and thin spots that never fully cover. High humidity or a cold room stretches the wait considerably. Touch-test an inconspicuous spot: if it feels tacky or your finger marks it, wait longer. Rushing the second coat is one of the most common ways a DIY paint job goes wrong.

How much does it cost to paint a room yourself?

Materials for an average 12 by 12 foot bedroom run roughly $80 to $200 as of 2026, depending on paint quality: two gallons of mid-grade wall paint, a roller and covers, brushes, a tray, tape, drop cloths and painter's plastic. Buying good tools once and reusing them lowers the cost of every future room. Hiring a pro for the same room typically runs $300 to $700 including labor. Prices vary by region and paint line, so treat these as a planning range and price your local store.

Should you cut in first or roll first when painting?

Cut in first, then roll immediately while the cut-in edge is still wet. Cutting in means brushing a 2- to 3-inch band along the ceiling line, corners and trim where a roller cannot reach. If you let that band dry before rolling, the brushed and rolled areas dry to slightly different textures and you get a visible picture-frame effect around the room. Working one wall at a time — cut in, then roll it out before moving on — keeps a wet edge so everything blends into one uniform surface.