Exterior Door Window Trim Replacement

Your home's exterior door and window trim can become damaged or faded due to years of exposure to harsh weather conditions.

Learn how to replace your home's damaged exterior door and window trim.Learn how to replace your home's damaged exterior door and window trim.
Fortunately, you may be able to replace the damaged portions of trim without spending a lot of time or money. If you cannot find new trim that matches the existing color, you will have to replace all of the trim or apply a coat of paint to make it one uniform color.

Set a wood block against the door frame near the damaged trim. With this block as a leverage point, use a pry bar to lift the damaged trim away from the exterior wall of the home.

Measure the pieces of damaged exterior trim to determine how much replacement material you need. If you were able to remove the trim without breaking the pieces apart, you can use the existing pieces as guides when cutting the replacement trim.

Cut the pieces of replacement trim with a miter saw according to your measurements or templates from the previous step. If you are replacing a corner, cut the end of the two segments of trim at a 45-degree angle so they will form a square joint when connected.

Use finishing nails to attach the new trim to the exterior wall of your home. Sink the nails below the surface of the trim with a hammer and nail set. Cover the nail heads with wood putty and scrape off the excess with a putty knife. Allow the putty to dry according to the instructions on the product label. Sand down the putty with fine-grain sandpaper until it is flush against the trim.

Apply paint, wood stain or a waterproof sealant if you are using unfinished wood trim. Allow the finish to dry and seal the edge of the trim with caulk. Dip your finger in water and run it along the bead of caulk to smooth it out.

Things You Will Need

  • Replacement door trim
  • Wood block
  • Pry bar
  • Tape measure
  • Miter saw
  • Finishing nails
  • Hammer
  • Nail set
  • Wood putty
  • Putty knife
  • Sandpaper
  • Paint or wood stain of your choice
  • Paintbrush
  • Caulk
  • Caulk gun

About the Author

Denise Sullivan has been writing professionally for more than five years after a long career in business. She has been published on Yahoo! Voices and other publications. Her areas of expertise are business, law, gaming, home renovations, gardening, sports and exercise.