What is the correct order to paint a room — walls, ceiling, or trim first?

The correct order is ceiling first, then walls, then trim — and following this sequence saves you hours of extra masking and touch-up work.

This order exists for a very practical reason: every step you do will inevitably get a little paint on the adjacent surface, and working top-to-bottom means you cover your mistakes as you go. When you paint the ceiling first, you'll inevitably get a small amount of ceiling paint on the top of the walls — but that's fine, because you haven't painted the walls yet. When you do the walls next, you'll overlap slightly onto the trim — again, fine, because the trim comes last. The trim coat is your final step and is where you take the most care, creating clean crisp lines against the freshly painted wall.

Where most DIYers go wrong is painting the trim first, thinking the clean lines will be easier to see and tape against. The problem is that once your trim is painted, you then have to carefully tape it (or cut in perfectly with a brush) before rolling the walls — and any mistakes during the wall stage chip or smear the fresh trim. It doubles your masking work and increases the chance of damage to the trim you just carefully finished.

Here's how each step should unfold in a typical NB home. Ceiling: Roll the field first with a ceiling paint using a 10–15mm nap roller, then cut in around the perimeter with a 2.5-inch angled brush. Two coats minimum. Allow to fully dry. Walls: Cut in at the ceiling line, corners, and around trim with an angled brush first. Roll the field while the cut-in is still wet to blend the edge — this is called maintaining a wet edge and prevents lap marks. Two coats. Trim and doors: Once walls are fully dry, paint all baseboards, door casings, window casings, and doors last in your chosen trim sheen (semi-gloss or satin acrylic are the NB standard).

One exception worth noting: if you're also priming surfaces (bare drywall after renovation, water stains, etc.), prime before the ceiling and wall sequence. And in older NB homes where you're dealing with oil-based trim paint already on the woodwork, you may need to lightly sand and prime the trim before your new topcoat — oil-based paints don't accept latex directly without proper preparation.

Practical tips: Keep a damp cloth nearby for immediate cleanup of drips from one surface onto another. Change your roller sleeve between ceiling and wall stages if there's any risk of colour transfer. Use Frog Tape on the trim when doing your final wall cut-in — it gives a cleaner line than standard blue tape on slightly textured wall surfaces common in NB homes from the 1970s–1990s.

When to hire a pro: The sequence itself is manageable for a DIYer, but cutting in cleanly — especially at the ceiling/wall junction in a room with no crown moulding — takes practice. A professional painter can cut in freehand faster and cleaner than most homeowners can with tape. If you're painting a whole house interior or multiple rooms, a two-person professional crew will typically complete the job in a fraction of the time for $3,000–$6,500 on a typical 3-bedroom NB home.

---

Find a Painting Contractor

New Brunswick Painting helps you find local painting professionals through the New Brunswick Construction Network:

• Expressions Painting ✓
• Loves Painting Ltd. ✓
• Worry No More Handyman Service ✓
• Worry No More Handyman Services ✓