How to Paint a Room

🧰 Tools & Materials

Tools

• Paint roller frame
• Roller covers
• Paint tray
• 2–2½-inch angled paintbrush
• Extension pole
• Putty knife
• Sanding sponge or fine-grit sandpaper
• Screwdriver
• Step ladder
• Clean rags
• Vacuum or shop vacuum

Materials

• Interior wall paint
• Primer, if needed
• Painter’s tape
• Drop cloths or plastic sheeting
• Lightweight spackle
• Paintable caulk, if needed
• Stir sticks
• Paint tray liners

Signs It’s Time to Paint a Room

You may be ready for a fresh coat of paint if:

• The walls are faded, stained, or noticeably scuffed.
• Previous touch-ups no longer blend with the surrounding paint.
• The existing color makes the room feel dated or too dark.
• There are patched nail holes or repairs throughout the walls.
• The paint is peeling, cracking, or bubbling in certain areas.
• You simply want to change the look of the room.

If paint is actively peeling or bubbling, find and correct the underlying problem before repainting. If the existing coating is failing, follow our How to Fix Peeling Paint⁠ guide before applying a new finish.

Before You Buy

Measure the length and height of each wall to estimate how much paint you’ll need. One gallon of paint typically covers roughly 350–400 square feet for one coat, although textured walls and dramatic color changes may require more.

For most rooms, plan on applying two coats.

Choose the sheen based on where you’re painting:

• Flat or matte: Hides wall imperfections well but is generally harder to clean.
• Eggshell: A popular choice for bedrooms, living rooms, and other everyday spaces.
• Satin: More washable and commonly used in kitchens, bathrooms, hallways, and children’s rooms.
• Semi-gloss: Usually better suited for trim, doors, and other surfaces that need frequent cleaning.

If you’re covering a very dark color, painting new drywall, covering stains, or painting over a difficult surface, you may also need primer.

💡 Pro Tip: If you’re buying multiple gallons of the same color, make sure they’re from the same paint line and sheen. Slight differences between cans can sometimes become noticeable after the paint dries.

Before You Start

Move as much furniture out of the room as possible. Move anything remaining toward the center and cover it.

Remove:

• Outlet and switch covers
• Wall decorations
• Curtains that may get in the way
• Easily removable hardware

Cover the floor with drop cloths and protect anything you don’t want painted.

Inspect the walls closely before opening the paint. Painting over dents, loose caulk, dirt, or damaged drywall usually makes those imperfections more noticeable rather than hiding them.

Step 1: Clean the Walls

Dust the walls, baseboards, corners, and areas around doors and windows.

Clean dirty or greasy areas with a damp cloth and mild cleaner. Kitchens and high-touch areas may need more cleaning than bedrooms or living rooms.

Allow the walls to dry completely.

What You Should See: A clean wall without dust, cobwebs, grease, or loose debris.

If Yours Looks Different: If you see mildew, heavy staining, peeling paint, or signs of moisture, don’t simply cover it with new paint. Determine what’s causing the problem first.

Step 2: Repair Holes and Wall Damage

Fill small nail and screw holes with lightweight spackle.

Use a putty knife to press the spackle into the hole and scrape away the excess.

For larger dents or drywall damage, use the appropriate patching method before continuing. Our How to Patch Drywall Before Painting⁠ guide walks through preparing those repairs for paint.

Allow the repair to dry according to the product instructions.

Sand the repaired areas until they’re smooth and flush with the surrounding wall.

Wipe away all sanding dust.

What You Should See: The repaired area should feel smooth when you run your hand across it.

If Yours Looks Different: If you can still feel a ridge or depression, it may show through the finished paint. Apply another thin layer of spackle or sand the area again.

💡 Pro Tip: Shine a flashlight or work light across the wall from the side. The low-angle light makes dents, ridges, and poorly sanded patches much easier to spot.

Step 3: Caulk Small Gaps if Needed

Inspect where trim meets the wall, especially around baseboards, windows, and door casing.

Small gaps can usually be filled with paintable acrylic latex caulk.

Apply a thin bead and smooth it before it begins to skin over.

Allow the caulk to dry according to the manufacturer’s instructions before painting.

Do not use caulk to fill drywall holes or large structural gaps.

Step 4: Protect the Floor and Trim

Lay drop cloths across the floor and make sure they extend completely to the walls.

Apply painter’s tape anywhere you need additional protection, such as:

• Baseboards
• Window trim
• Door trim
• Built-in cabinets
• Other surfaces you aren’t painting

Press the edge of the tape down firmly.

What You Should See: The edge closest to the wall should be fully adhered without wrinkles or gaps.

If Yours Looks Different: Loose tape can allow paint to seep underneath. Press it down again before painting.

Step 5: Prime Where Necessary

You don’t always need to prime an entire previously painted wall that’s clean, sound, and being repainted with a similar color.

Primer is especially useful over bare drywall, drywall repairs, significant stains, very dark colors, glossy or difficult surfaces, and major color changes. If you’re making a dramatic change from a darker existing color, see our How to Paint Over a Dark Color⁠ guide for more specific prep and coverage tips.

Spot-prime small repaired areas when appropriate.

Allow the primer to dry completely before applying paint.

Problem: The patched areas still look different after priming.

Some repairs absorb paint differently than the surrounding wall. Apply another coat of primer to the repair and allow it to dry before painting.

Step 6: Stir the Paint

Open the paint and stir it thoroughly from the bottom of the can upward.

Don’t rely on shaking alone if the paint has been sitting for a while.

Pour a manageable amount into your paint tray.

Avoid filling the tray too high. You need room to roll excess paint off the roller.

Step 7: Cut In Around the Edges

Use an angled brush to paint around the perimeter of the wall where the roller can’t comfortably reach.

Cut in around:

• Ceiling edges
• Inside corners
• Baseboards
• Door trim
• Window trim
• Outlets and switches

Work in manageable sections rather than cutting in the entire room hours before rolling.

What You Should See: A painted border several inches wide around the edges of the section you’re working on.

If Yours Looks Different: If the brush is leaving heavy ridges, you probably have too much paint on it. Spread the paint farther before adding more.

💡 Pro Tip: You don’t need to load the entire brush with paint. Dip roughly the first third of the bristles, then lightly tap off excess paint instead of scraping the brush hard against the rim.

Step 8: Load the Roller

Roll the roller cover through the paint and then across the textured portion of the tray several times.

The entire roller should be evenly coated without dripping.

A dry roller won’t spread paint evenly, while an overloaded roller can splatter and leave heavy lines.

What You Should See: The roller should look evenly saturated all the way around.

If Yours Looks Different: If one section still looks dry, continue rolling it through the tray until the cover is evenly loaded.

Step 9: Roll the First Coat

Start near one side of the wall and work in sections roughly 3–4 feet wide.

Roll the paint onto the wall using overlapping passes.

Apply moderate pressure and allow the roller to do the work. Pressing excessively can squeeze paint from the roller edges and leave lines.

Continue working while the previous section is still wet so the edges blend together.

Finish each section with light passes in the same direction to even out the paint.

What You Should See: The wall should have an even wet appearance without obvious bare areas or heavy paint buildup.

If Yours Looks Different: Don’t repeatedly roll over paint that has already started drying. This can create texture and roller marks. Allow it to dry and correct the area with the next coat.

Step 10: Let the First Coat Dry

Allow the first coat to dry for the amount of time listed on the paint can before recoating.

Don’t judge the color or coverage while the paint is still wet.

Some areas may initially look lighter, darker, or uneven as they dry.

Once dry, inspect the room in good lighting.

Look for:

• Thin areas
• Roller lines
• Missed spots
• Paint drips
• Areas where the previous color shows through

Lightly sand any dried drips or rough spots before applying the next coat.

Step 11: Apply the Second Coat

Repeat the cutting-in and rolling process for the second coat.

Maintain a wet edge and work systematically around the room.

The second coat usually produces a much more uniform color and finish.

What You Should See: After drying, the wall should have consistent color and sheen from one side to the other.

If Yours Looks Different: Patchy areas may need additional drying time before you judge them. If they’re still visible once completely dry, apply another light coat to the affected wall rather than repeatedly touching individual spots.

Step 12: Remove the Painter’s Tape

Remove painter’s tape before it has been left in place longer than recommended by the manufacturer.

Pull the tape slowly back over itself rather than straight away from the wall.

If paint has formed a heavy film over the edge of the tape, lightly score the edge with a sharp utility knife before removing it.

This helps prevent dried paint from peeling away with the tape.

Step 13: Inspect and Clean Up

Allow the walls to dry and inspect them from several angles.

Look closely around:

• Ceiling lines
• Corners
• Outlets
• Baseboards
• Doorways
• Window trim

Touch up small missed areas carefully.

Remove drop cloths once you’re confident you won’t need additional paint.

Clean brushes and rollers according to the paint manufacturer’s instructions.

Wait until the paint has dried sufficiently before reinstalling outlet covers, switch plates, wall decorations, and furniture against the walls.

🛑 Common Mistakes to Avoid

• Painting over dirty or dusty walls.
• Skipping repairs because you expect paint to hide them.
• Using too much paint on the roller.
• Pressing excessively hard while rolling.
• Letting one section dry before blending the next section into it.
• Repeatedly rolling over paint that has already started drying.
• Applying the second coat before the first coat is ready.
• Using the wrong paint sheen for the room.
• Leaving painter’s tape on too long.
• Judging coverage while the paint is still wet.

Troubleshooting Common Painting Problems

Problem: I can see roller marks after the paint dries.

Roller marks can come from uneven pressure, an overloaded or underloaded roller, or rolling back over paint as it begins to dry. Allow the wall to dry completely, then apply another thin, even coat while maintaining a wet edge.

Problem: The old color is still showing through.

A dramatic color change may require another coat. If the original color is particularly dark or difficult to cover, primer may help create a more uniform base.

Problem: My cut-in areas look different from the rolled areas.

This can happen when the brushed paint dries significantly before the wall is rolled. Work in smaller sections so the rolled paint blends into the cut-in paint while both are still workable.

Problem: Paint leaked underneath the painter’s tape.

The tape may not have been pressed firmly enough against the surface. Allow the paint to dry, carefully correct the edge with a small angled brush, and use a firmly sealed tape edge on the next section.

Problem: I found a paint drip after it dried.

Don’t try to cover the bump with more paint. Allow it to dry completely, carefully sand the raised area smooth, remove the dust, and repaint that area.

❓ FAQs

Do I need to prime the walls before painting?

Not always. Walls that are already painted, clean, and in good condition can often be repainted without a full coat of primer. Bare drywall, repairs, stains, glossy surfaces, and major color changes are more likely to benefit from primer.

How many coats of paint should I use?

Two coats are a good expectation for most room-painting projects. Some high-quality paints and similar-color repaints may cover sooner, while dramatic color changes may require additional coverage.

Should I paint the edges or roll the walls first?

Cutting in and then rolling the nearby section while the paint is still workable helps the two areas blend together.

Do I need painter’s tape if I’m using an angled brush?

Not necessarily. Experienced painters often cut in without tape. For a first-time homeowner, painter’s tape can provide extra protection while you’re learning to control the brush.

Why does my wall look patchy while it’s drying?

Paint doesn’t always dry evenly. Differences in wetness can temporarily make sections appear lighter, darker, or shinier. Wait until the entire wall has dried before deciding whether the coverage is uneven.

Can I paint over small nail holes?

You can, but they’ll usually remain visible. Filling and sanding them before painting gives you a much cleaner finished wall.

How long should I wait between coats?

Follow the recoat time printed on your specific paint can. Temperature, humidity, ventilation, and the type of paint can all affect drying time.

📞 When to Call a Professional

Consider calling a professional if:

• You discover significant water damage or recurring moisture behind the paint.
• Large sections of drywall need repair or replacement.
• Paint is extensively peeling or failing and you don’t know why.
• The room has extremely high ceilings or areas that can’t be reached safely with an ordinary step ladder.
• You suspect older painted surfaces may contain lead and aren’t sure how to work around them safely.
• The project requires extensive surface repair beyond normal patching and prep.

Related DIY Guides

• How to Prep Walls for Painting⁠
• How to Patch Drywall Before Painting⁠
• How to Paint a Ceiling⁠
• How to Paint Baseboards⁠
• How to Paint Trim⁠