How to Paint a Room
Most paint jobs fail at the prep stage, not the painting itself. Proper prep and two coats will get you a professional-looking result.
Updated June 2026 — written and reviewed by the HomeCostGuide editorial team
Steps
- 1
Clear and protect the room
Move or center furniture and cover it, remove outlet and switch covers, and lay drop cloths along the baseboards.
- 2
Patch and sand
Fill nail holes and small dents with spackle, let it dry, then sand smooth. Wipe down walls to remove dust.
- 3
Tape edges and trim
Apply painter's tape along trim, ceiling lines, and any adjacent walls you're not painting the same color.
- 4
Prime if needed
Prime bare drywall, water stains, or a significant color change (especially dark to light) so the topcoat covers evenly.
- 5
Cut in the edges
Use an angled brush to paint a 2–3 inch border around ceiling lines, corners, and trim before rolling the main wall area.
- 6
Roll the walls
Work in a 'W' or 'M' pattern in roughly 3x3 foot sections, then fill in without lifting the roller, to avoid visible lines. Apply two coats for even, durable coverage.
- 7
Remove tape and clean up
Pull painter's tape at a 45-degree angle while the final coat is still slightly wet, to avoid peeling dried paint with it.
Safety notes
- Ventilate the room while painting and while it dries.
- Use a stable ladder for ceiling lines and high walls — don't stand on furniture.
When to call a pro
High ceilings, extensive water damage or repairs needed before painting, or wanting a sprayed finish are all reasons to bring in a professional painter.
Frequently asked questions
How many coats of paint do I actually need?+
Two coats is standard for a durable, even finish, even if one coat looks like it covers. Dark-to-light color changes or bare drywall may need a primer coat first.
How much paint do I need for a room?+
It depends on wall area, door/window count, and number of coats — use the paint calculator to get a quantity estimate from your room's dimensions.