Step 1: Gather your materials – Before you begin, make sure you have all the necessary tools and materials at hand. You’ll need a tape measure, flat pry bar, miter saw, hammer, nails, paint or stain, sandpaper, paintbrush or rag, and a new door trim.

Step 2: Measure the existing door trim – Using a tape measure, note the dimensions of your current door trim. This will help you when selecting a replacement.

Step 3: Purchase the new door trim – Based on your measurements, purchase the appropriate size and style of door trim from your preferred retailer or hardware store.

Step 4: Carefully remove the old door trim – With the aid of your flat pry bar and hammer, gently pry off the existing door trim without causing damage to both the wall and the door jamb.

Step 5: Clear debris and clean the area – Remove any stray nails or debris left behind after detaching the old trim. Clean the area to ensure it’s free of dirt and grime before installing the new trim.

Step 6: Measure and mark your new door trim – Using your tape measure and chosen door trim piece, mark where you’ll need to cut for an accurate fit.

Step 7: Cut the new door trim to size – After taking measurements and marking your new door trim, use a miter saw to carefully make each cut for proper alignment.

Step 8: Sand any rough edges – Use sandpaper to smooth out any splinters or rough edges created from cutting.

Step 9: Apply paint or stain as desired – Choose a paint or stain that matches your overall décor and apply liberally with either a paintbrush or rag. Allow ample time for drying before installation.

Step 10: Position new trim in place – Once dry, align your new door trim against the wall and door jamb in the correct position.

Step 11: Attach the new door trim – Begin by nailing the top section of the door trim to the wall, then working your way down along both sides, ensuring a secure attachment.

Step 12: Conceal nail holes with matching filler – To achieve a polished look, fill any visible nail holes with a matching wood filler or putty.

Step 13: More sanding and touch-up painting – Gently sand over filled nail holes and touch up with paint or stain as necessary.

Step 14: Inspect your work – Take a moment to step back and inspect your newly installed door trim. Check for any adjustments that need to be made or areas that may require additional touch-ups.

Step 15: Clean up – Be sure to put away all tools and dispose of any leftover materials properly. Enjoy your newly fitted door trim!

By following these 15 steps, you’ll successfully replace a door trim with ease and precision, giving your doorway a fresh appearance.