how to put up door molding

Step-by-Step Guide: How to Install Door Molding

By Hannah Wilson
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Transforming the transition between your walls and floors can be as simple as installing door molding. This decorative and functional addition not only enhances your room's aesthetic appeal but also provides a seamless finish to your interior design. Let's dive into the step-by-step process of how to put up door molding, ensuring a professional and polished result.

Before you start, gather your materials and tools. You'll need door molding, miter saw, tape measure, pencil, miter box or miter saw, Brad nailer or finish hammer, Brad nails or finish nails, sandpaper, and wood glue. Having these ready will make your project run smoothly.

Measuring and Cutting Your Molding

Accurate measurement is key to a perfect fit. Start by measuring the width and height of your door frame. These will be the lengths of your vertical pieces. For the header (top piece), measure the width of the door frame and subtract the width of your vertical pieces. This will give you the length of your header.

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Door Trim Makeover — Before & After DIY Transformation
Door Trim Makeover — Before & After DIY Transformation
the corner of a room with a stained glass window and white trim on the wall
the corner of a room with a stained glass window and white trim on the wall
the before and after photo shows how to paint an interior door with wood paneling
the before and after photo shows how to paint an interior door with wood paneling

Now, let's talk about miters. Miter joints are 45-degree angles cut at the ends of your molding pieces. They allow your molding to wrap around the corners of your door frame, creating a continuous, seamless look. Use your miter saw or miter box to make these cuts. Remember to cut one miter for the top of each vertical piece and one for the bottom of your header.

Test Fit Your Molding

Before nailing anything in place, do a test fit of your molding. Hold your pieces in place and ensure they fit snugly around the door frame. Make any necessary adjustments to your cuts. This step might seem unnecessary, but it can save you a lot of time and frustration in the long run.

a man is using a grinder to cut the wood on the stairs in his home
a man is using a grinder to cut the wood on the stairs in his home
Enhance Your Doorways: DIY Decorative Molding Installation
Enhance Your Doorways: DIY Decorative Molding Installation
a black cat sitting on the floor in front of a door with text that reads diy plain to paneled for just $ 12
a black cat sitting on the floor in front of a door with text that reads diy plain to paneled for just $ 12

Once you're satisfied with the fit, it's time to remove your molding and prepare it for installation.

Prepare Your Molding for Installation

Use sandpaper to lightly sand any rough edges or surfaces on your molding. This will ensure a smooth finish once you've painted or stained it. Also, apply wood glue along the edges that will be butting up against each other. This will help create a strong bond and prevent your miters from coming apart over time.

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Now, let's move on to the actual installation.

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How to add molding to a flat panel door - Painting by the Penny
a woman working on a door with a driller and power strip attached to it
a woman working on a door with a driller and power strip attached to it
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{DIY Door Casings}…the easy way.
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How to add molding to a flat panel door
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Simple Door Trim = Instant Modern Upgrade!
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Moulding Around Doors | DIY Molding Magic for Interior Door Surrounds | Home Improvement Projects

Installing Your Door Molding

Starting with the vertical pieces, apply a bead of wood glue along the back edge of one piece. Position it in place on your door frame, using a level to ensure it's plumb (vertical). Use your Brad nailer or finish hammer to nail it in place, driving nails at a 45-degree angle to avoid splitting the wood. Space your nails about 6-8 inches apart.

Repeat this process with the other vertical piece, ensuring your miters fit snugly together. Now, it's time to install the header.

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Installing the Header

Apply wood glue along the back edge of your header. Position it in place, ensuring your miters fit snugly with the vertical pieces. Use your Brad nailer or finish hammer to nail it in place, again driving nails at a 45-degree angle and spacing them about 6-8 inches apart.

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How to Add Molding to Your Doors- Door Header Tutorial
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The Easiest Door Trim
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Door Makeover DIY Idea
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the words door trim and casing are overlaid with images of different types of doors
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How To Easily Install DIY Door Headers
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Door Trim Molding Details for a Classic Entryway
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Timeless_Home_Edit on LTK
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Easy Craftsman Style Door Casing Update - Oak & Grain Home
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85K views · 7.6K reactions | The easiest way to update your door trim from builder grade #diyhomeprojects #diy #door #doortrim #homeimprovement #renovation #homediy #diyprojects #howto #tutorial | HomeDIY | Facebook
the steps leading up to an open door with text overlay that reads creative ways to update interior doors with molding
the steps leading up to an open door with text overlay that reads creative ways to update interior doors with molding
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Peel & Stick Door Molding
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6 Door Frame Upgrades That Feel High-End | Luxury Trim, Molding & Interior Door Ideas

Once your header is in place, step back and admire your handiwork. You've just installed door molding like a pro!

As a final touch, you might want to fill any nail holes with wood filler, sand any rough spots, and paint or stain your molding to match your room's decor. This will give your door molding a polished, finished look that complements your space.

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Installing door molding is a simple DIY project that can make a big impact on your room's appearance. So, why wait? Grab your tools and get started on your next home improvement project today!

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