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How to Paint Trim

Follow our step-by-step guide below for beautiful trim made to last.

A room is not complete until the trim is done! It is the final step in any interior painting project. The Paint Shop carries great Benjamin Moore brands for painting trim, including Advance which offers a smooth, durable finish perfect for trim.

What you will need:

  • Paint: Choose from Advance, Regal and ben
  • Supplies: Caulk, primer (recommend Stix), sanding block, 1 ½” angled brush, 2” angled brush, painter’s tape and a sponge.



Step 1) Always use high-quality brushes. Inexpensive brushes can leave brush marks and bristles. Use polyester or nylon brushes for water-based paint. A natural-bristle brush can be used for oil-based paint. We recommended our Silks Nylyn brush. Read our Silks Nylyn brush article for more information.

Step 2) Inspect the trim. Fill any gaps between the trim and wall with caulk. Repair any damage to trim areas like dents, cracks, and nail holes with a lightweight spackling compound and clean thoroughly once dried before painting.

Step 3) Lightly scuff the surface with 120 grit sandpaper and clean. This step will help your primer adhere to the surface, help break the smooth surface on new factory-primed trim and on existing, already painted trim it will get rid of any lumps, paint drips and imperfections from the previous paint job.


Now for the Fun Part

Step 4) Use painter’s tape to mark off trim if needed and apply primer. Dust off walls, windows, ceilings and floors around the trim to be painted so painter’s tape adheres well. Use tape to give clean cut-ins on windows and floors where the baseboard meets flooring. If walls were recently painted, ensure they are completely dry before adhering tape to them.

Step 5) Apply the paint in smooth strokes. Apply lightly and evenly to allow Advance to level to a smooth finish. Dip no more than 1” of the angled brush into the paint and clean excess on side of tray or can to avoid overloading the brush or creating drips.

Step 6) Let paint dry thoroughly before removing the painter’s tape.


View the Paint Shop’s most popular colours for trim.

Have more questions? Speak with your local Paint Shop paint pro about all things trim and get the answers you need.

Happy painting!