How to install an exterior door

Whether you’re upgrading your home’s curb appeal or replacing a weather-worn door, learning how to install an exterior door is easier than you may think. With the right tools, a little know-how, and a dash of determination, you can tackle this project just like the pros — whether you have a screened-in porch or a back door that’s in need of replacement. 

Consider your options: pre-hung exterior door vs. a door with a new frame

When it comes to installing an exterior door, there are two main options to consider. First, there is the pre-hung exterior door, which comes with a frame already attached. This option is great for homeowners looking for a quick and easy installation, as the frame is already square and level. Alternatively, you can opt for a door with a completely new frame. While this option does require more work, it offers more customization with the ability to select your own frame style, shape, and size. 

Ultimately, your choice will depend on your personal preferences and needs. If you're looking for convenience and ease, a pre-hung door may be the way to go. But if you're particular about the framing details, then a custom frame may be more ideal. Let’s talk about the process of installing each option.

Installing a pre-hung exterior door

Learning how to install an exterior pre-hung door is easier than learning how to install a door with a completely new frame. In fact, it’s a fairly simple project you can complete in an afternoon if you follow these steps:

1. Measure and order: Before you can begin installation, you need to measure the door opening to order the correct size pre-hung door. Measure the height and width of the door opening, making sure to measure the jamb as well. Once you have your measurements, you can order your pre-hung door, which will come with the jamb and hinges already attached.
2. Remove the old door: With your new door ordered, it’s time to remove the old one. Begin by removing any weather stripping, screws, or nails holding the door in place. If the old door is still attached to the hinges, use a pry bar or hammer to remove the pins. Finally, remove any remaining screws holding the old jamb in place.
3. Prepare the opening: With the old door and jamb removed, it’s time to prepare the door opening for the new pre-hung door. Remove any remaining debris and check the opening for level and plumb. If the opening is not level or plumb, you will need to shim the new door accordingly for a proper fit.
4. Install the new door: With the door opening prepped, it’s time to install the new pre-hung door. Begin by positioning the door with the hinges facing the jamb and inserting the hinge pins. Next, shim the door as needed to ensure a level and plumb fit. Finally, use screws to attach the hinges, working from the top hinge to the bottom.
5. Add finishing touches: With the door securely attached, it’s time for the finishing touches. Install any locksets or deadbolts that were included with the pre-hung door. Then, apply weather stripping around the perimeter of the door to increase energy efficiency, and add a door sweep to the bottom to prevent draft.

Installing an exterior door and door frame

If it’s time to give your entire entryway a refresh, you should consider installing a brand-new door and door frame. Learning how to install an exterior door frame is much more complex than the process described above, but it’s still a project that any dedicated DIY-er can complete in a matter of hours. Here’s how:

1. Measure and prepare the doorway: Begin by measuring the doorway and purchasing an exterior door that fits the measurements. Make sure you have all the necessary tools including a drill, screws, caulking gun, a saw, and a level. Remove the casing around the door frame and remove the old door from the hinges. Once the old door is removed, clean and inspect the existing door frame. Make sure that the doorway is leveled, plumb, and squared.
2. Install the new door frame: The next step is the most complex part of the installation process — installing the new door frame. Insert the frame carefully into the opening, making sure it is level and flush with the surrounding walls. Secure the frame by inserting shims between the frame and the walls. Check that the frame is level using a level and make adjustments if necessary. Once the frame is in place and leveled, secure it securely to the wall using wood screws.
3. Hang the door: Now it's time to hang the door. Line up the hinges on the door with those on the frame and screw them in place. Make sure the door hangs level and swings smoothly. If the door does not close properly, make any necessary adjustments.
4. Add weatherstripping: While installing weatherstripping is optional, it’s a step you should take to keep out drafts, rain, and other elements that may cause damage to the door and your home's interior. Install weatherstripping around the entire perimeter of the door frame to create a tight seal. 
5. Finish the project: Just like the process of installing an exterior pre-hung door, the final step involves putting on any finishing touches. Install any trim and decorative elements to the door frame. It’s also a good idea to use caulking to seal any gaps. Finally, give the door a fresh coat of paint or stain, if applicable.

Whether you do it yourself or rely on the pros, a new exterior door adds value, style, and security to your home

Installing a new exterior door can be a worthwhile investment in your home’s comfort, security, and curb appeal. With these tips in mind, you can confidently approach your exterior door installation project and enjoy the many benefits of your new door. And remember, don’t be afraid to ask for help! Professional installation can ensure that your new door is properly fitted and sealed, preventing costly damage and enhancing your home’s value.

FAQs

Exterior door installations can be overwhelming and confusing, especially if you’re doing it for the first time. Remember, it never hurts to ask questions! Here are some answers to the most common exterior door installation questions:

How much does it cost to install an exterior door?

The cost to install an exterior door varies and depends on many factors such as material, size, labor costs, etc. A general rule of thumb is that the cost can range from $500 up to $2500 including labor costs. Other factors like customizations, the door's energy efficiency, and other advanced features can add to the overall cost.

How do you know if you need to install a new door with a new frame vs. a pre-hung door?

If you are replacing the entire exterior door, including the frame, then you would need to go with the new door and frame option. However, if your existing door frame is still in good condition, then a pre-hung door would be suitable. Pre-hung doors come with a frame that already has been attached, so it's usually easier and quicker to install.

When should you call a professional?

If you have some experience in carpentry and the right tools, then installing an exterior door can be done as a DIY project. However, if you have none of those skills, then it's best to call a professional. Installing an exterior door is complex and requires skill because you need to ensure that the door is level, weatherproofed, and installed correctly to avoid future issues. Here are some tips for hiring a contractor.