Trim & Casing Installation

Whether you’re remodeling, replacing windows, or building new, the right trim and casing can make a huge visual difference. Our expert trim and casing installation services add clean lines, architectural detail, and a polished finish to your windows and doors—enhancing both the look and value of your space.

From classic colonial moldings to sleek modern profiles, we install interior and exterior trim that blends seamlessly with your design while delivering long-lasting performance.

Types of Door Trim

Various door trim types are available, from simple, flat designs to more decorative, molded styles. Here are the two main categories:

Mitered trim: This style features 45-degree angled cuts at the corners, creating a seamless look that works well in modern settings or homes with low ceilings. While visually simpler, it tends to be a more challenging DIY project.
Butted trim: This type has square-cut ends that meet at 90-degree angles. It’s an easier DIY project since there are no angles to join, and it offers more options for customizing with larger head casings.

Tools and Materials for Door Trim Installation

If you’ve done any woodworking before, you’ll likely have most of the tools that you need for this project.

Tools

Miter saw or miter box with a handsaw: Essential for precise cuts.
Tape measure: Accurate measurements are necessary for a good fit.
Pencil: For marking measurements and cutting lines.
Level: Ensures installation is in plane, or level.
Combination square: Helps measure and mark the reveal.
Hammer or nail gun: For securing the trim in place.
Pry bar (for removing old trim): Handy for demolition work.
Caulk gun: Needed to apply painter’s caulk.
Sandpaper: For smoothing rough edges and surfaces.

Materials

Door casing (pre-primed or finished): Choose a style that complements your home’s decor.
Finish nails (4d and 6d sizes): Used for securing the trim.
Wood filler: For filling nail holes and gaps.
Painter’s caulk: For sealing edges and creating a smooth finish.
Shims (if needed): For a flush fit.

Trim & Casing Installation