Transforming your home’s interior with DIY projects not only adds personal touch but also increases its value. One such project that can make a significant impact is installing interior door trim moulding. This simple yet elegant addition can enhance the aesthetics of your doors, creating a cohesive and polished look throughout your home. Let’s dive into the world of DIY interior door trim moulding, exploring the benefits, types, and step-by-step process.
Before we delve into the details, it’s essential to understand why interior door trim moulding is a worthwhile investment. Firstly, it adds a layer of sophistication to your doors, making them appear more substantial and well-crafted. Secondly, it can help hide imperfections in your door frame, creating a seamless and professional finish. Lastly, it’s an affordable and straightforward DIY project that can significantly improve the overall look of your home.

Types of Interior Door Trim Moulding
Before you head to the hardware store, it’s crucial to familiarize yourself with the different types of interior door trim moulding. Each type offers a unique aesthetic, so choosing the right one depends on your home’s style and your personal preference.
1. **Crown Moulding**: This is a classic and elegant choice, often used to create a transition between the walls and ceiling. It comes in various profiles, from simple and understated to intricate and ornate.
Crown Moulding Profiles
Firstly, let’s discuss the different profiles of crown moulding. The most common are the cove, ovolo, and egg and dart profiles. The cove profile features a semicircular curve, while the ovolo profile has a more complex, S-shaped curve. The egg and dart profile, as the name suggests, features alternating egg-shaped and dart-shaped motifs.
Each profile offers a unique look, so consider the style of your home when making your choice. For instance, a simple cove profile might be best for a modern home, while an ornate egg and dart profile could be perfect for a traditional or Victorian-style home.

Other Types of Interior Door Trim Moulding
Besides crown moulding, other types of interior door trim moulding include baseboard, chair rail, and picture frame moulding.
**Baseboard Moulding**: This is the most common type of trim, used to cover the joint between the wall and the floor. It comes in various styles, from simple and flat to intricate and decorative.
**Chair Rail Moulding**: Originally used to protect walls from chair backs, chair rail moulding is now primarily decorative. It’s typically installed about 32 inches from the floor and can add a touch of elegance to your rooms.

**Picture Frame Moulding**: This type of moulding is used to create a frame around a door or a window. It’s a great way to add a focal point to a room and can be used to highlight architectural features.
DIY Interior Door Trim Moulding: Step-by-Step
Now that you’ve chosen the perfect moulding for your home, it’s time to roll up your sleeves and get started. While the process may seem daunting at first, it’s actually quite straightforward with the right tools and a bit of patience.
Before you begin, gather your tools. You’ll need a miter saw, a miter box (if you don’t have a miter saw), a coping saw, a nail gun, a tape measure, a level, a pencil, and safety gear, including goggles and gloves.
Measuring and Cutting
The first step is to measure your door frame and cut your moulding to size. Start by measuring the width and height of your door frame. Then, subtract the width of your moulding from these measurements to find the length of your pieces.

Next, use your miter saw or miter box to cut your moulding at a 45-degree angle. Remember to cut your pieces so that the angles fit together to form a seamless corner. This is where a miter saw with a laser guide can be particularly helpful.
Installing the Moulding
Once you’ve cut your pieces, it’s time to install them. Start by nailing the top piece of your moulding to the top of your door frame. Use a level to ensure it’s straight, then nail it in place.
Next, install the side pieces. Hold them up to the top piece, ensuring the angles fit together, then nail them in place. Finally, install the bottom piece, again ensuring the angles fit together.
If you’re installing crown moulding, you’ll need to use a coping saw to create a cope joint at the corners. This involves cutting out a section of the moulding to fit around the corner piece. It’s a bit more complex than a miter joint, but it creates a much smoother, more professional look.

After installing all the pieces, fill any nail holes with wood filler, then sand and paint your moulding. This is where you can really let your creativity shine, choosing a color that complements your home’s decor.
Finishing Touches
Once your moulding is painted, it’s time to add the finishing touches. If you’re installing baseboard moulding, you may need to add shoe moulding at the base to cover the gap between the floor and the wall. If you’re installing crown moulding, you may want to add a crown moulding cleat to support the weight of the moulding and prevent it from sagging.
Finally, step back and admire your handiwork. With a bit of time and effort, you’ve transformed your home’s interior with a professional-looking DIY project.
Remember, the key to a successful DIY project is patience and attention to detail. Don’t rush through the process, and don’t be afraid to ask for help if you need it. With the right tools and a bit of know-how, you can achieve stunning results that will make your home the envy of the neighborhood.




















