The Ultimate Door Frame Replacement Guide: Step By Step Instructions

So, your door frame has seen better days, and you’re thinking it’s time for a replacement. We get it, and we’ve got your back. In this blog, we’re going to dive into some simple ways you can tackle the task of replacing your door frame all on your own. No need to call in the pros – with a bit of know-how and some handy tools, you’ll have your door frame looking brand new in no time. So, roll up those sleeves and let’s get started on this satisfying home improvement project!

The Inside Scoop on:

• The various ways to perform a door frame replacement.
• A step-by-step guide for how to execute your DIY door frame replacement project.

Methods of Door Frame Replacement

Understanding the different types of door frames is crucial for a successful replacement project. Below are three methods for replacing your door frame. Read on to figure out which method is right for your project, including specific considerations for interior door frames.

Full Frame Replacement

This method involves removing the entire frame, including the door jamb. It’s suitable for frames that are extensively damaged or if you want a completely new style.

Partial Frame Replacement 

If the damage is localized, such as at the bottom of the door due to water damage or mold, you might only need to replace just a door frame without changing the entire door.

Repair Instead of Replace

Sometimes, minor damages can be repaired using wood filler, caulk, or reinforcement screws without needing to replace the entire frame.

Step-by-Step Process of Door Frame Replacement

Let’s go over the six steps for a DIY door frame replacement.

1. Preparation

• Measure the old door frame dimensions.
• Purchase a new door frame based on these measurements.
• Assess the existing door for measurements, condition, and compatibility with the new frame.
• Gather necessary tools: hammer, nails, screwdriver, saw, chisel, pry bar, and measuring tape.

What You’ll Need

Before you dive into replacing your door frame, it’s crucial to gather all the necessary tools and materials. Having everything on hand will make the process smoother and more efficient. Here’s a handy checklist to get you started:

• A new door frame kit or a pre-hung door: Depending on your project, you might need a complete door frame kit or a pre-hung door that includes the frame and door slab.
• Shims: These are essential for adjusting the frame to ensure it’s level and plumb.
• Foam insulation: This helps to seal any gaps and provides added insulation.
• Caulk: Use this to seal the edges and prevent moisture ingress.
• Trim (if necessary): If your old trim is damaged, you’ll need new trim to finish the job.
• A pry bar: Useful for removing the old frame and trim.
• A utility knife: Handy for cutting through caulk and other materials.
• A hammer: Essential for nailing the frame into place.
• A tape measure: Accurate measurements are key to a successful installation.
• A level: Ensures your frame is perfectly vertical and horizontal.
• A screwdriver: Necessary for removing and installing screws.
• A drill (if necessary): For drilling pilot holes or driving screws.

Having these tools and materials ready will set you up for a smooth and successful door frame replacement project.

Assessing the Old Door Frame

Before you start tearing out the old door frame, it’s important to take a good look at its condition. Assessing the old door frame will help you determine whether you need to replace the entire frame or just the damaged parts. Here’s what to look for:

• Signs of Damage: Check for any visible damage such as cracks, splits, or warping. Pay special attention to the bottom of the frame, as this area is often prone to water damage and rot.
• Rot and Mold: Look for any signs of rot or mold, especially if the door frame has been exposed to moisture. Rot can weaken the frame and make it necessary to replace the entire frame.
• Structural Integrity: Ensure the frame is still structurally sound. If it’s loose or wobbly, it might be best to replace the entire frame.
• Consult a Professional: If you’re unsure about the extent of the damage or the best course of action, don’t hesitate to consult a professional. They can provide expert advice and help you make an informed decision.

By thoroughly assessing the old door frame, you’ll have a clear understanding of what needs to be done, ensuring a successful replacement.

2. Remove the Door

• Using a screwdriver, remove the door from its hinges and set aside. Removing an exterior door may require additional steps to ensure security and proper sealing.

Remove the Old Trim and Molding

To get started on replacing your door frame, you’ll first need to remove the old trim and molding. This step is crucial as it allows you to access the door frame itself. Here’s how to do it:

1. Loosen the Edges: Use a utility knife to carefully cut along the edges of the trim. This will help to break the seal and make it easier to remove the trim without damaging the surrounding walls.
2. Pry Off the Trim: Take your pry bar and gently insert it behind the trim. Carefully pry the trim away from the wall, working your way around the entire door frame. Be patient and take your time to avoid causing any damage.
3. Remove the Molding: If there’s any additional molding around the door frame, use the same method to remove it. Again, be gentle to prevent any unnecessary damage.

With the trim and molding removed, you’ll have clear access to the old door frame, making the next steps much easier.

Remove the Shims and Hardware

Now that you’ve removed the trim and molding, it’s time to take out the shims and hardware that are holding the old door frame in place. Here’s how to do it:

1. Remove the Shims: Use a chisel or a hammer to carefully loosen the shims. These small pieces of wood are used to adjust the frame and keep it level. Once they’re loose, you can easily pull them out.
2. Remove the Hardware: Next, use a screwdriver to remove any screws or hinge pins that are securing the old door frame. If the frame is nailed in place, you might need to use a pry bar or hammer to remove the nails.

By removing the shims and hardware, you’ll be able to extract the old door frame and prepare the doorway for the new frame.

3. Extract the Old Frame

• Remove the door trim or molding using a pry bar. Do this gently to avoid damage if you intend to reuse them.
• Extract the old frame. If it’s nailed in place, use a pry bar or hammer. For screws, a screwdriver or power drill will do.

4. Clean and Prep the Doorway

• Clean out any debris, old nails, or screws.
• Check the doorway for squareness using a carpenter’s square. This ensures the new frame will fit perfectly.

5. Install the New Frame

• Position the new frame in the doorway.
• Use wooden shims to adjust and ensure it’s perfectly vertical (plumb) and square.
• Once in position, nail or screw the frame into place, ensuring it’s secure.
• Consider using a prehung door, which comes with its own frame, to simplify the installation process and ensure a secure fit.

Assemble the Door Frame

If you’ve opted for a door frame kit, the next step is to assemble the new door frame. Follow these steps to ensure it’s done correctly:

1. Read the Instructions: Start by carefully reading the manufacturer’s instructions that come with your door frame kit. Each kit may have specific assembly requirements.
2. Attach the Side Jambs to the Head Jamb: Typically, you’ll need to attach the side jambs to the head jamb using screws or nails. Make sure the connections are secure.
3. Ensure the Frame is Square and Level: Use a level to check that the frame is square and level. This is crucial for a proper fit and smooth operation of the door.

Taking the time to assemble the door frame correctly will make the installation process much smoother and ensure a perfect fit.

Place the Frame in the Doorway and Mark Nail Points

With your new door frame assembled, it’s time to place it in the doorway and secure it in place. Here’s how to do it:

1. Position the Frame: Carefully place the new door frame in the doorway. Use a level to ensure it’s plumb (perfectly vertical) and level (perfectly horizontal).
2. Adjust with Shims: Use wooden shims to make any necessary adjustments. Insert the shims between the frame and the wall to ensure the frame is perfectly aligned.
3. Mark Nail Points: Once the frame is in the correct position, use a pencil to mark the nail points on the wall where you’ll need to secure the frame.
4. Secure the Frame: Use a hammer to drive nails into the marked points, securing the frame to the wall. Make sure the frame is firmly attached and doesn’t move.

By carefully positioning and securing the new door frame, you’ll ensure a stable and long-lasting installation.

6. Final Touches

• Reattach the door to the new frame using the hinges.
• Install the door trim or molding. If the old ones were damaged, you might need to purchase new ones that fit the aesthetic of your door.
• Seal any gaps with caulk for added insulation and to prevent moisture ingress.

Estimated Cost of Materials for a Door Frame Replacement

When considering the estimated cost of materials for a door frame replacement, it’s important to factor in various elements that may influence the overall expense. The primary component, the door frame itself, comes in a range of materials, from softwood to hardwood and composite options. Depending on your choice, this can cost anywhere from $30 to $100 or even more. 

Alongside this, you’ll require nails or screws, which typically amount to approximately $5 to $10. Wooden shims, another essential for ensuring a precise installation, come in at around $5. To seal gaps and ensure a weather-resistant finish, you’ll need caulk, which usually costs about $5 to $10.

If your door frame replacement also entails updating or adding door trim or molding, it’s worth noting that the price can vary significantly. Basic styles may start at around $10, while ornate or high-quality trims can range from $50 or more. 

Taking all these factors into account, you can anticipate a total material cost ranging from $55 to $175 or potentially more, depending on the quality and specifics of the materials you select. It’s essential to consider your budget and preferences when making choices for your door frame replacement project.

Estimated Time of Completion

For someone with basic DIY experience, replacing a door frame can take anywhere from 3-6 hours. This estimate includes the time to remove the old frame, clean the area, ensure the doorway is square, and install the new frame. For beginners, it might take a little longer, so setting aside a day for this project is a good idea.

ARCH Exteriors Can Help With Door Frame Replacements!

Replacing a door frame may seem like a daunting task, but with the right tools, preparation, and step-by-step guidance, it’s a project that many homeowners can tackle on their own. By following the outlined steps you can enhance both the functionality and aesthetics of your doorway.

However, if you encounter challenges such as uneven walls, structural damage, or an unusual door size, don’t hesitate to seek professional assistance. At ARCH Exteriors, we have the expertise to ensure a seamless installation, helping you achieve a flawless finish with minimal hassle.

Have any questions or tips of your own about door frame replacement? Share your thoughts in the comments below! If you’re considering professional door installation, contact us today for expert assistance and a free consultation.