Important Terms to Know About Moulding in Your Home
- Arcadia Sash & Door
- Jan 15
- 3 min read
Moulding is an essential detail that enhances the architectural beauty and character of your home. Whether you're renovating, building, or just curious about interior design, understanding common moulding terms can help you make informed decisions. Below are some important terms to know about moulding in your home:

1. Crown Moulding
Crown moulding is the decorative trim installed where walls meet the ceiling. Known for its elegant curves and detailed profiles, crown moulding adds sophistication and can make a room appear more polished. It’s often used in living rooms, dining rooms, and other formal spaces.
2. Baseboard
Baseboards are installed at the bottom of walls, where they meet the floor. They help protect the wall from scuffs and damage while providing a clean transition between the wall and flooring. Baseboards come in various styles, from simple to intricate designs.
3. Chair Rail
Chair rails are horizontal mouldings typically installed about one-third up the wall. Originally designed to protect walls from chair backs, they now serve as a decorative element, often used to separate different wall treatments, such as paint and wainscoting.
4. Casing
Casing is the trim that surrounds doors and windows, covering the gap between the wall and the frame. It enhances the appearance of doors and windows while also providing a finished look to the opening.
5. Wainscoting
Wainscoting refers to decorative wall paneling that covers the lower portion of a wall. It is often paired with chair rails and can add texture and dimension to a space. Wainscoting is commonly seen in dining rooms, hallways, and bathrooms.
6. Picture Rail
Picture rails are narrow mouldings installed high on walls, just below the ceiling. Traditionally used for hanging pictures without damaging the wall, picture rails are also a unique decorative feature in vintage or traditional-style homes.
7. Cove Moulding
Cove moulding is a simple, concave trim that creates a smooth transition between two surfaces, such as walls and ceilings. It’s less ornate than crown moulding but still adds a subtle decorative touch.
8. Dentil Moulding
Dentil moulding is a classic style featuring a series of small, evenly spaced rectangular blocks. This type of moulding is often used in crown moulding or architectural details to convey a traditional or historical aesthetic.
9. Egg-and-Dart
Egg-and-dart is a decorative pattern often found in crown moulding or friezes. It features a repeating design of oval (egg) shapes alternating with arrow-like (dart) shapes, adding an elegant and timeless look to a space.
10. Plinth Block
Plinth blocks are thick, square or rectangular pieces of trim placed at the base of door casings. They provide a decorative transition between the baseboard and door trim, enhancing the overall aesthetic of a room.
11. Rosette
Rosettes are decorative blocks often used at the corners of door or window casings. They eliminate the need for mitered corners and add a distinctive touch to the trim.
12. Shoe Moulding
Shoe moulding is a thin, rounded trim piece installed at the bottom of baseboards where they meet the floor. It helps cover gaps caused by uneven flooring and provides a clean, finished look.
13. Beadboard
Beadboard is a type of paneling characterized by narrow vertical planks separated by small, rounded indentations (or beads). It’s commonly used in wainscoting or as an accent wall in bathrooms and kitchens.
Why Knowing These Terms Matters
Understanding moulding terms allows you to communicate effectively with contractors, designers, or suppliers. It also helps you identify the right styles and options to complement your home’s design. Whether you prefer classic, modern, or eclectic aesthetics, moulding is a versatile feature that can elevate your interior spaces.
Final Thoughts
Moulding may seem like a small detail, but it plays a significant role in shaping the look and feel of your home. By familiarizing yourself with these terms, you’ll be better equipped to make choices that reflect your style and enhance your living spaces. If you’re planning a moulding upgrade or installation, consider consulting a professional to ensure flawless results.