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Interior Door Trim Design Ideas

Trim basically is the molding used to frame windows, doors, walls, floor and even ceilings. They help to define the architectural style of the room. It is also an inexpensive way to transform the look of a space. Door trims are also known as cased opening which basically is an interior opening without a door but finished with jambs and casing. Trims are an attractive finish to any room.


Door trims are basically made up of woods. They are bare wood, primed wood, medium-density fiberboard, polystyrene and PVC trim. You should use bare wood if you want to stain it or have a natural wood look. The type of wood you can choose from usually ranges from poplar to pine to fir to oak to aspen. So, following list of wood is best for making door trims

  • Fir : Fir is one of the most widely used of all the exterior trim materials.
  • Pine: Pine is a cheaper version of fir.
  • Redwood : Redwood is the premier of all trim woods.
  • Cedar: Cedar is another one of the exterior trim woods that is under used.

There are different tools and materials  used in installing a door or window trim. And those tools and materials can possibly be following:

Tools :

  • tape measure               
  • finish nail gun
  • clean rags


  • trim
  • polyurethane sealer
  • wood stain
  • wood glue:

Wood glue is an adhesive used to tightly bond pieces of wood together.

  1. Titebond Quick & Thick Multi-Surface Glue
  2. Titebond1413 III Ultimate Wood Glue
  3. Titebond2404 Wood Molding Glue
  4. Franklin International 6123 Titebond Trans Glue
  5. Titebond Instant Bond Wood Adhesive Thick


  • wood conditioner:
                   wood conditioner is a pre-staining step made for use on interior wood projects before finishing with an oil-based stain. Varathane Wood Conditioner helps prevent splotchy, uneven staining on soft and porous wood types, including birch, maple, alder, fir and pine.
  • Finish nails:
    Finish nails are small nails with very small heads. They are usually used for “final touches” such as molding or trim. They are usually sunken into the surface and leave a small hole that can be filled in with putty and painted over for a smooth finish and invisible nail and nail

Steps for installing a door trim:

By following the basic steps of door trim installation, you can install a door trim in  quite a beautiful manner. More over in the following content we will see the most effective and reliable things which we can use to make our door trims look fancy and reliable.

1.      Stain (or Paint) the Trim:

With a rag, wipe the wood with wood conditioner, stain and polyurethane sealer, letting each coat dry before starting on the next layer. Alternatively, apply primer, allow it to dry, and paint the trim in your chosen color.


You can stain or paint your trim with Semi-Gloss. This is more of a standard. Many builders use semi-gloss paint on moldings and trim so that those elements stand out, but the slightly duller surface is a little more forgiving. Plus it is great for traditional interiors and is easy to clean more over this finish is quite popular.


  1. Chisel Trim Brush : Slanted bristles produce a good, straight line for trimming in corners and edges.
  2. Square Trim Brush : The ends of the bristles are cut square and used primarily for applying paint over flat
  3. Angled Brush : Bristles cut to make it easier to apply paint to window trim.

2.      Cut the Trim to Size:

Use a tape measure to measure the area around the door. Then, use a miter saw to cut the trim to those measurements, factoring in a 1/8″ reveal on the doorway . Cut the ends at 45-degree angles to fit around the door jamb. Most trim pieces graduate in 1/4-inch increments. Standard door and window trim is typically 2 1/4 inches in width. It takes approximately one hour to install door trim for each door in a home.  A standard sized door is 80”x36”. This would require about 17 feet of linear trim for material costs.

3.      Glue the Ends Together:

Lay the trim on the floor in the shape of the door and apply wood glue to the cut side of the trim and fit the two sides together.

4.      Attach the Trim:

Drill a small pilot hole through the top of the trim sink a screw into the pilot hole. Then, use a finish nail gun to drive a finish nail into the opposite corner. Nail the rest of the trim into place

And there you go. Your door trim are installed successfully.