How to Paint a Room, Step by Step

What you'll need

Gather everything before you open a can. Stopping mid-cut to hunt for a tool is how drips and lap marks happen.

• ✓Quality interior latex in your chosen color and sheen (see our paint calculator for quantities)
• ✓Primer — a full gallon for whole-wall priming, or a quart for spot priming
• ✓2.5-inch angled sash brush for cutting in
• ✓9-inch roller frame, 3/8-inch nap covers, and an extension pole
• ✓Roller tray with liners, or a 5-gallon bucket with a screen (pros prefer the bucket)
• ✓Painter's tape, drop cloths, and plastic sheeting
• ✓Spackle, putty knife, sanding sponge, and a damp rag for prep

Step 1 — Empty and protect the room

Move everything out that you can. What can't leave should be pushed to the center of the room and covered with plastic. Lay canvas drop cloths on the floor — canvas absorbs drips instead of letting them roll under your shoes.

Remove outlet covers, switch plates, and any wall art or curtain hardware. Put the screws in a labeled bag so reinstalling isn't a puzzle.

Step 2 — Prep the walls

Prep is where a good paint job is won or lost. Skip it and you'll see every nail hole and stain telegraphing through your new finish within a week.

• ✓Fill nail holes, anchor holes, and small cracks with spackle; let dry, then sand smooth
• ✓Sand any glossy surfaces (old trim, previously oil-painted walls) so new paint can grip
• ✓Wipe walls down with a damp rag to pull off dust — critical after sanding
• ✓Degrease kitchen walls and bathroom ceilings with a mild TSP substitute
• ✓Caulk gaps between trim and walls with a paintable acrylic caulk

Step 3 — Tape trim, windows, and edges

Run painter's tape along the top edge of baseboards, around window and door casings, and where walls meet the ceiling if you're not painting the ceiling. Press the edge down firmly with a putty knife — that's what stops bleed-through.

Skip tape only if you're confident cutting a clean freehand line with a good brush. Most DIYers should tape.

Step 4 — Prime what needs priming

You don't always need a full prime coat. You do need to spot-prime anywhere you patched, any water or smoke stains, any bare drywall, and any surface you're taking from dark to light.

For a full color change from something dramatic like navy or deep red, prime the entire wall in a tinted primer close to your final color — you'll save a coat of finish paint and get truer color.

Step 5 — Paint the ceiling first

If the ceiling is part of the job, do it first. Cut in the perimeter with a brush, then roll the ceiling with an extension pole in overlapping W-shaped strokes. Keep a wet edge — never let one section dry before you roll into the next, or you'll see lap marks.

Step 6 — Paint the trim

Baseboards, door casings, and window casings get painted before the walls. It's counterintuitive but faster: it's easier to tape trim off and cut a clean wall edge against it than the reverse.

Use a semi-gloss or satin enamel for trim — it's more durable and easier to wipe clean than wall paint.

Step 7 — Cut in the walls

With your angled sash brush, paint a 2- to 3-inch band along the ceiling line, around windows and doors, along baseboards, and into every corner. Cutting in defines the room; take your time here.

Work one wall at a time so the cut-in is still wet when you start rolling — that keeps the two edges from showing as separate strokes.

Step 8 — Roll the walls

Load the roller from your tray or bucket screen until it's evenly coated but not dripping. Start about a foot from the corner and roll up in a W or M pattern, then fill in without lifting the roller.

Work in 3-foot-wide vertical sections from top to bottom, always overlapping into the still-wet edge of the previous section. Finish each section with light, top-to-bottom strokes to level out the roller texture.

Step 9 — Let the first coat dry, then recoat

Most quality latex paints are recoat-ready in 2–4 hours at normal indoor temperatures. Rushing the second coat pulls up the first coat and leaves streaks — set a timer and walk away.

Two coats is the standard, not the exception. One coat only works when you're touching up the exact same color or laying a very close color over a tinted primer.

Step 10 — Pull tape and touch up

Pull painter's tape while the final coat is still slightly tacky (usually within an hour of rolling). Pull it slowly at a 45-degree angle away from the fresh paint — that keeps the line crisp.

Once dry, walk the room with a bright light and a small brush and touch up any misses. Reinstall outlet covers, switch plates, and hardware last.

When it's worth calling a pro

A single room with 8-foot ceilings is a great DIY project. Where the math flips is at scale: whole-home repaints, vaulted or two-story ceilings, cabinets, extensive drywall repair, or projects where you can't afford a rushed finish before an event or a home sale.

If your project has any of those, we do free same-day estimates across the Omaha metro — and every project is led by an EPA Lead-Safe certified crew using premium Benjamin Moore and Sherwin-Williams products.

Frequently Asked Questions