How to Paint a Room

Before you start

What to have ready

• Tape measure and the paint product coverage on the label
• Drop cloths, painter’s tape, and cleaning supplies
• Patch compound, sanding sponge, and primer if needed
• Brush, roller, tray, extension pole, and a safe ladder

Step by step

Make a clear plan

1. 01

   Measure before buying

   Measure room length, width, and wall height. Record doors and windows, decide whether to paint the ceiling and trim, and choose how many coats you need. Use the Paint Calculator to turn those measurements into gallons.

2. 02

   Clear and protect the room

   Move smaller furniture out, group heavy pieces in the center, cover furniture and floors, and remove wall décor and outlet or switch plates. Keep the work area clear.

3. 03

   Prepare the walls

   Clean the surface, patch holes and cracks, sand repairs smooth, and remove sanding dust. Let the wall dry. Prime bare or repaired areas when the product instructions call for it.

4. 04

   Paint in a workable order

   If included in your project, start with the ceiling and trim. On walls, use a brush for edges and corners, then roll the broad areas while the edge is still wet.

5. 05

   Let the first coat dry and inspect

   Follow the paint label for recoat time. Check the wall in good light, apply the next coat, and remove tape according to the product instructions.

Double-check

Common mistakes to avoid

• Buying from floor area alone: paint covers wall or ceiling surface, not just the floor.
• Skipping surface preparation or assuming every primer has the same coverage.
• Treating an example drying time as a substitute for the actual product label.

Further reading

Sources and product guidance

Use these references alongside the instructions for the products and materials you choose.

• Benjamin Moore: How to Paint a Room ↗
• Sherwin-Williams: Paint Calculator ↗