Interior Painting
A fresh coat of paint is the highest ROI home improvement you can make. Learn the prep secrets that separate pro results from amateur disasters.
Pick the Right Paint Finish
The biggest beginner mistake is using the wrong sheen. Each finish has a purpose — use the wrong one and you'll hate the result.
Ceilings & low-traffic walls. Hides imperfections. Not washable.
Most bedrooms & living rooms. Slight sheen, washable.
Best all-purpose finish — hallways, kids' rooms, kitchens.
Trim, doors, cabinets. Very washable. Shows imperfections.
Cabinet doors, exterior doors. Maximum durability and sheen.
How to Paint a Room — The Right Way
90% of great paint jobs are made in prep, not painting. The secret pros know: spending 2 hours prepping saves 2 hours fixing mistakes.
Prep the room properly
Remove everything you can. Cover what remains. Fill holes with spackling compound, let dry, sand smooth. Wipe walls with a barely damp cloth to remove dust. Move outlets and switch plates — a flat-head screwdriver, 2 minutes.
Tape carefully
Apply painter's tape along the ceiling-wall line, trim, and door frames. For crisp lines, run a putty knife along the tape edge to seal it — any paint that sneaks under will ruin the line.
Prime if needed
Prime over: new drywall, patched areas, dark colors, stains, or if switching to a lighter color. Spot-prime patched areas at minimum. Let dry fully per can instructions.
Cut in the edges first
Using your angled brush, paint a 2–3" band along all edges where the roller can't reach: ceiling line, corners, and trim. Don't rush this — these lines define the finished look.
Roll the walls with a W pattern
Load the roller, drain excess on the tray. Apply in a M or W pattern, then fill in without lifting. Work in 3x3 foot sections. Keep a wet edge — work quickly enough that each new section overlaps before the previous one dries.
Second coat after full dry
Wait the time on the can (usually 2–4 hours) before second coat. Two thin coats always look better than one thick coat. Lightly sand between coats with 220-grit for a flawless finish.
Remove tape & clean up
Pull tape at 45°, pulling back on itself, while paint is still slightly wet. Touch up any spots with your brush. Clean brushes with water (latex paint) or mineral spirits (oil-based) within 30 minutes.
Painting Trim & Baseboards
Fresh white trim makes any room look sharp. The key is prep and patience — rushing trim paint looks worse than not painting it at all.
The Pro Sequence
Always paint ceiling first, then walls, then trim last. This order means you'll only need to "cut in" trim against the completed wall once. Painting trim first leads to coverage fights and wasted time.
Sand and clean the trim
Sand with 120-grit to remove gloss from existing paint so new paint bonds. Wipe with a tack cloth or barely damp rag. Any dust = brush marks.
Tape the floor and wall
Run tape along the top edge of baseboards where they meet the wall. Put a thin strip of tape along the floor edge. Canvas drop cloths under the trim area.
Apply thin coats with a brush
Use a 2.5" angled brush. Work along the length of the trim in long, smooth strokes. Avoid back-brushing — one direction only to prevent brush marks.
Two coats + light sand between
After the first coat dries fully, sand lightly with 220-grit, wipe, and apply the second coat. It will be noticeably smoother.
How to Paint a Ceiling
Ceilings are painted first, before walls. The secret to a drip-free ceiling: thick nap roller, slow steady strokes, and moving with the natural light rather than against it.
Always Use Flat Ceiling Paint
Flat/matte paint is the standard for ceilings because it reflects light evenly and hides imperfections (brush marks, roller lines, patches). Eggshell or satin on a ceiling shows every surface flaw dramatically — especially in raking light from a window or recessed light.
Protect everything below
Cover the entire floor and all furniture with drop cloths — ceiling drips are inevitable when rolling. Remove or cover light fixtures. Run painter's tape around the perimeter where ceiling meets wall. You'll "cut in" the edge by hand with a brush before rolling.
Extend the roller pole to avoid neck strain
Always use an extension pole when painting ceilings — reaching up with your arm tires out in minutes and creates streaky, uneven pressure. A 4-foot extension lets you reach most residential ceilings from the floor. You'll move faster and get better coverage.
Use a thick nap roller (1/2" to 3/4")
Ceilings are textured — a thin nap roller won't get paint into the valleys. A 1/2" nap for smooth or light texture, 3/4" for popcorn or heavier texture. Load the roller well and keep a full, wet roller throughout.
Paint in parallel strips toward your light source
Stand facing your natural light source (window) and roll away from it in parallel strips. This way the wet paint is being illuminated from the front — you can see misses, thin spots, and finished areas clearly. Rolling toward the light hides wet sheen and leads to missed areas.
Apply second coat after full dry
Ceiling paint typically needs 2–4 hours dry time. The second coat fills the texture valleys the first coat missed. Two coats are always required when going from a darker ceiling to white. Cut in the edges again with the brush before rolling the second coat.
Paint Interior Doors for a Crisp Finish
Painted doors show every brush mark when light hits them. Getting a smooth finish requires sanding, the right product, and a specific technique — but a freshly painted door in semi-gloss completely transforms a room.
Semi-Gloss or Satin for Doors
Never use matte or eggshell on doors — low-sheen paints mark up instantly from hands and daily wear. Semi-gloss (the classic choice) or satin (slightly softer, still washable) are the right finishes. Use an alkyd-modified latex for the smoothest result — it levels out better than straight latex.
Remove the door if possible
Painting a door on its hinges means working against gravity — paint drips. Pop the hinge pins and lay the door flat on sawhorses if feasible. Flat doors: paint one side, let dry, flip and paint the other. If not removable, paint in-place but work quickly to catch drips.
Sand the entire door with 120-grit, then 180-grit
For doors with existing paint: scuff-sand all surfaces with 120-grit to give the new paint something to grip. Sand high-contact areas (around the knob, along the edges) more aggressively. Follow with 180-grit for a smoother base. Vacuum and wipe with a tack cloth before painting.
Paint panel doors in sections: panels first, then rails
For raised-panel doors: paint the recessed panels first with a brush (getting into the corners). Then paint the horizontal rails, then the vertical stiles. This order prevents runs at the corners. On flat doors, a small foam roller gives the smoothest finish — then tip off with a brush in one direction.
Light sand between coats, two coats total
After the first coat is fully dry (2–4 hours for latex), sand lightly with 220-grit sandpaper. This knocks down any dust nibs or brush marks. Wipe with a tack cloth. Apply the second coat the same way as the first. The difference in smoothness between coats 1 and 2 is significant.
Let cure before rehinging or closing
Paint is dry to the touch in a few hours but takes 2 weeks to fully cure (harden). Rehinging too soon and closing the door traps the soft paint against the frame, causing it to stick and peel. Reinstall after 24 hours but prop open for a full week to prevent sticking.