How to Paint Trim with a Brush?

Painting trim with a brush requires patience and technique to achieve a smooth, professional finish. Here's how to do it:

Step-by-Step Guide to Painting Trim

1. Preparation is Key:

   • Clean the Trim: Wipe down the trim with a damp cloth to remove dust, dirt, and grime. For greasy areas, use a mild degreaser.
   • Sand the Trim: Lightly sand the trim with fine-grit sandpaper (220-grit) to create a slightly rough surface for the paint to adhere to. If the trim has existing paint that is peeling or chipping, you'll need to scrape it off and sand those areas more thoroughly.
   • Apply Primer (if needed): If the trim is bare wood, previously painted with an oil-based paint, or stained a dark color, apply a coat of primer. Use a stain-blocking primer for stained wood. Primer helps the paint adhere better and provides a uniform base. Allow the primer to dry completely according to the manufacturer's instructions.
   • Caulk Gaps (if needed): Use paintable caulk to fill any gaps between the trim and the wall. Smooth the caulk with a wet finger or a caulking tool. This creates a clean, seamless look.
   • Tape off the Area: Use painter's tape to protect the surrounding walls and floors. Ensure the tape is firmly pressed down to prevent paint from bleeding underneath.

2. Gather Your Supplies:

   • High-quality paint brush: A 2-inch angled brush is generally recommended for painting trim. The angled shape allows for precise application in corners and along edges.
   • Paint: Choose a paint specifically designed for trim. Semi-gloss or gloss finishes are popular choices because they are durable and easy to clean.
   • Paint tray: To hold your paint.
   • Paint can opener & stirrer: To properly mix the paint.
   • Clean rags: For wiping up spills.

3. Painting Technique:

   • Load the Brush: Dip the brush into the paint, loading only the bottom third of the bristles. Tap off any excess paint against the side of the paint tray to avoid drips and runs.
   • Apply the Paint:
     • First Stroke: Press lightly with your 2” angled brush, and apply the paint in a single stroke, in one direction, on the widest part of the trim.
     • Work slowly to ensure a smooth and even application along the length of your trim.
     • Avoid unsightly brush marks by starting any subsequent strokes in a dry area and working toward the wet ones.
   • Maintain a Wet Edge: Overlap each stroke slightly to blend the paint and prevent lap marks. Work quickly to maintain a wet edge, which means painting over the previously painted area while it's still wet.
   • Avoid Over-brushing: Over-brushing can cause air bubbles and uneven texture. Apply the paint smoothly and evenly, and then leave it alone.
   • Paint in Sections: Divide the trim into manageable sections and complete each section before moving on. This helps maintain a wet edge and ensures consistent coverage.
   • Corners and Details: Use the angled brush to carefully paint corners and intricate details.

4. Second Coat (if needed):

   • Allow the first coat of paint to dry completely according to the manufacturer's instructions.
   • Lightly sand the trim with fine-grit sandpaper (320-grit) to smooth out any imperfections.
   • Wipe away the sanding dust with a tack cloth.
   • Apply a second coat of paint using the same technique as the first coat.

5. Clean Up:

   • Remove the painter's tape while the paint is still slightly wet to prevent it from peeling off the new paint.
   • Clean your brush thoroughly with soap and water (for latex paint) or mineral spirits (for oil-based paint).
   • Store the brush properly to maintain its shape and prevent it from drying out.

By following these steps, you can achieve a professional-looking paint job on your trim with a brush.