How to Install a Prehung Door
A door is a very accurate instrument. When it is closed, it should reliably click into place at the latch and clear the jamb before swinging freely on its hinges. To understand why hanging a door is regarded a real test of carpentry expertise, examine the tight tolerances that are required to reach this level of performance: To begin with, Tom Silva, general contractor at This Old House, says, “I didn’t have anything more complicated than a hammer, some chisels, and a screwdriver.” The jamb would be assembled first, then the hinge mortises would be carved by hand, and then the door would be hung separately.
“It took a long time and a lot of patience,” he adds of the process.
What Is a Prehung Door?
A prehung door is a pre-assembled item that includes all of the necessary hardware and a frame, and is ready to be put into a doorway. Purchasing one helps make installation easier and faster, although the phrase “prehung” is a bit of a misnomer in this case. These doors and jambs will still need to be carefully adjusted to compensate for any imperfections in the wall framing. “To put one of them in needs a high level of precision,” Tom explains. “If it is not properly installed, it will not function properly.”
Common Mistakes to Avoid When Ordering Prehung Doors
Carpenters used to be able to quickly modify their work, make modifications, and repair faults back when they constructed the pieces surrounding a door piece by piece. Because the majority of the assembly work is done off-site with a prehung door, a mistake made when placing an order might transform an otherwise perfectly fine unit into a piece of useless scrap metal. Here are two things you may take to avert such consequence. BE AWARE OF YOUR OPENING: Generally speaking, prehung doors are constructed to suit rough openings that are 2 to 21 2 inches larger than the jamb’s corresponding measurements.
- Examine the trimmers to ensure they are plumb, parallel, and square to the wall as well as the header if an existing opening is there.
- SPECIFY THE DIRECTION OF THE SWING: It is necessary for your supplier to know which direction you want the door to swing; nevertheless, be wary of the inquiry “Do you want a left-hand or a right-hand door?” That is not to say that the phrases always signify the same thing.
- Allow that person to figure out which way the door is “handed” on their own.
- Prehung doors are supported by a jamb that has been “split” into two halves.
The main jamb, which is installed initially, is where the door is joined to. In order for it to glide over the edge of the main jamb, the split jamb features a groove underneath the stop. Typically, both jambs are provided with casings that have already been installed.
How to Install a Prehung Interior Door
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1. Check the rough opening
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- In the entryway, place a 4-foot level on the floor to mark the threshold. If the hinge side is lower than the latch side, put shims under the level nearest the hinge jamb to raise the hinge side up. Make adjustments until the level’s bubble is in the middle
- Finish nail the shims to the floor to keep them in place. If the latch side is lower, no shims are required
- Otherwise, shims are required. Make sure the walls and trimmer studs are plumb by using a level or plumb bob to check them. Using a framing square, check the trimmers’ faces to verify whether they are square to the wall as well. Finally, make sure that the trimmers are parallel to one another by measuring between them at the top, bottom, and centre of the hole. Prehung door swing: Getting It Perfect” is a good place to start if the wall is not plumb, or if the trimmers are not plumb, out of square, or not parallel to the wall.
2. Shim the trimmers
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- Measure the distance between the bottom of the jamb and the center of each hinge on the hinge jamb. Mark the hinge positions on the hinge-side trimmer by measuring up from the floor (or the top of the shims) and marking the hinge locations on the hinge-side trimmer. Tack the plumb bob to the top of the hinge-side trimmer, then measure the distance between the string and the trimmer at each hinge site with the plumb bob in place. Overlapping shims should be placed where the gap is the smallest. Adjust the thickness of the shims to 1/8 inch and tack them in place with a finish nail. Take the distance between the shims and the plumb bob string and multiply it by two. Shims should be placed in overlapping pairs at the other two hinge points. Adjust the thickness of each pair of shims until the space between the shims and the string is the same as the gap at the first pair. Trim the ends of each pair with a utility knife so that they do not extend past the drywall after they have been secured to the trimmer.
3. Fit door into opening
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- Lift the door into the rough opening and tighten the hinge jamb against the shims tacked to the trimmers
- Then, lift the door into the finished opening. To attach the trimmer to the face of the hinge-side casing, drive an 8d finish nail through the casing 3 inches below the miter and into the trimmer. With your level on the casing’s face, move the jamb in and out until it is plumb. Tack eight-inch finish nails through the casing at the other two hinge places if the wall is plumb and the casing is flat against it. To make the door plumb, use a shim behind the casing at the hinge places if the wall is not plumb and the casing does not rest against it. Using a nail, drive the nail through the case, shims, and the trimmer. Tapered wood wedges should be used to close any gaps between the casing and the wall.
4. Adjust the gap between the door
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- Examine the horizontal gap, also known as the “reveal,” that exists between the top of the door and the head jamb. Ideally, it should be consistent in width from left to right and between 1/8 and 3/16 inch broad. Increase or decrease the reveal by pushing the head case up if necessary. Make a mark on the face of the latch-side casing and into the trimmer at the top of the door by driving an 8d nail through it. On the latch side, look for a vertical reveal between the door and the jamb. Its thickness should be comparable to that of a nickel. You may adjust it by hand by grabbing the case and moving the jamb. Open and close the door many times to ensure that its leading edge, the one that rests on the stop, clears the jamb by a consistent 1/8 inch on each occasion. To create the reveal, drive 8d finish nails every 16 inches through the latch-side casing and into the trimmer to secure the reveal. Check to see that the disclosure is consistent from one moment to the next.
5. Anchor the jamb
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- Insert a pair of shims between the main jamb on the latch side and the trimmer, towards the top of the door opening, to keep the door from closing completely. 8d finish nails should be used to secure them to the trimmer when they are just touching the rear of the jamb and are not exerting any pressure on it. Additional pairs of shims should be nailed a few inches above the base of this jamb, as well as immediately above and below the striking plate to complete the installation. The jamb may bend if these shims were not there.
6. Replace hinge screw
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- Remove the middle screw from the top hinge leaf and replace it with a screw that is long enough to pierce the trimmer. Do this on both sides of the hinge jamb. Consequently, sagging and binding of the door are avoided.
if the long screws don’t match the ones that arrived with the hinges, place them below the hinge leaf (see illustration below).
7. Attach the split jamb
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- Begin by carefully pressing the edge of the split jamb into the groove in the main jamb, starting at the bottom of the split jamb. Both hands should be used to tap the two jambs together. On both sides of each miter, as well as every 18 inches along the length of the casing, attach the casing to the wall using nails. 8d finish nails should be driven through the stop and into the trimmers to hold the two jambs together. One nail should be driven through each hinge location, one through each shim near the top and bottom of the latch jamb, and one nail should be driven through each shim just above and below the striker. NAILING into the head jamb is not recommended.
8. Mount the latch hardware
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- Using the screws provided, attach the striking plate to the mortise in the latch jamb on the back of the latch. For larger plates than the mortise, place the plate on the jamb, outline it with a pencil, and chisel to the outline
- For smaller plates than the mortise Insert the latch bolt into its bore and secure the plate of the latch bolt into the mortise on the edge of the door with the screws provided. If the mortise is too tight, you may modify the size of the mortise in the same way you did with the striking plate. The knobs should be positioned on both sides of the latch bolt, then the connection screws that link the knobs should be inserted and tightened. After you’ve closed the door, listen for the latch to slide into its strike. If the door is rattling, bend the prong on the strike plate slightly toward the stop to alleviate the problem. If the latch does not latch, bend the prong away from the stop until the latch latches. All of the screws should be tightened.
Prehung Door Swing: Getting It Perfect
Gregory Nemec is a well-known figure in the world of sports. Just as it is easier to build a house on a level foundation, it is also easier to hang a door that is level, plumb, and square when the door is installed correctly. However, while these are uncommon characteristics in most ancient buildings (and a sad number of modern ones), the fact that an entrance is misaligned does not imply that the door must be replaced. The key is to make little adjustments to either the aperture itself or your door-hanging method.
- Simply plumb the hinge and latch jambs with a level or a bob, then secure them in place with shims to complete the project.
- It is possible to use a split jamb to cover a 2×4 stud wall that is up to 1/2 inch out of plumb.
- Trimmers that are out of plumb or non-parallel can be compensated for by shims, unless the trimmers are so severe that the door will not close properly.
- Remove the screws that are holding the drywall to the trimmers, and then use a sledgehammer to coax the trimmer ends into the wall where they belong.
- If the entrance is too small at the top, or if the wall is coated with old plaster, a sledge will not function properly.
- TRIMMERS OUTSIDE THE SQUARE: A framing square can be used to determine if the faces of the trimmers are parallel to the surface of the wall.
- In order to fix this, a third shim need be added to the conventional opposed pair.
The third shim may be moved back and forth between the other two in order to vary their angle with regard to the trimmer. Keep in mind that if you’ve done this on the hinge side, you should double-check that all three sets of shims are plumb before installing the door.
What to Do After the Door Arrives.
- Take the length of the head and side jambs into consideration. The comparable measurements in a plumb and square rough opening should be 2 to 21 2 inches longer than in a plumb and square rough aperture. A door might be placed with as little as 1/8-inch space from side to side in the worst case scenario. Also, make sure that the depth of the jambs is equivalent to the thickness of the wall. Check to see that the door will swing in the correct direction after it has been mounted. Ideally, there should be no more than 3/8-inch between the bottom of the door and the finished floor surface. The clearance between the hinge and latch jambs is determined by cutting the ends of the jambs. To ensure that these cuts are safe, be sure to allow for a threshold or thick carpeting before proceeding. Check that the lockset fits properly in the holes that have been drilled in the door. Reboring is an option for holes that are too tiny. Holes that are too large will need to be filled, sanded, and then bored a second time. If at all feasible, have this task returned to the shop that performed the work.
For more information on how to install an outside prehung door, see How to Install an Exterior Prehung Door.
Time A busy day of work Complexity Less than $20 in intermediate costs
Learn how to install a prehung door by watching this video. We’ll teach you surefire ideas and tactics that will help you produce a terrific job even if you’re a complete beginner in the field of construction.
- 4d finish nails
- 6d finish nails
- 8d finish nails
- Interior door and trim
Video: How to Hang a Door
Travis Larson, an editor for The Family Handyman, demonstrates how to remove a door and replace it with a new one, or how to reinstall the old one.
Project step-by-step (17)
Check the level of the floor and the alignment of the jambs. Calculate the exact amount by which the floor is off of level. This much of the opposing jamb must be removed in order to level the door in the opening. Hanging a door correctly is one of the most pleasurable chores in the world of home renovation, but it’s also one of the most difficult to get right. If your door is not properly fitted, it may have uneven gaps along the jamb, or it may bind or not latch at all. In this post, we’ll teach you surefire strategies and procedures that you can use every time you need to know how to install a prehung inside door and get outstanding results each and every time.
For your first door, allow around an hour and a half, and after you get the hang of it, your second door will go in twice as quickly.
A straight 7-foot 2×4 and a second 2×4 the width of your opening (Photo 1), both of which should be straight as you sight along the edge, should also be obtained.
Even though we will not be covering the installation of the lockset in this post, you will need to purchase one for the door.
Pro Tips for How to Install a Prehung Door
- A precise level is essential for a successful installation. Check if it is flat by setting it down on a flat surface. Make a note of where the bubble is located. After that, turn the level end to end and look for the bubble. If the bubble does not settle exactly where you want it to, pick a more precise level. Check the length of the jambs on your prehung doors. It’s possible that they’ll be lengthier than you require. It is possible that you may need to cut both sides of the door to reduce the amount of space under it. It is recommended that doors be 1/2 inch above the floor in most circumstances
- If your door will be placed between rooms that will be carpeted later, you can raise both jamb sides 3/8 inch above the floor to prevent having to trim your doors
- Blocks can be used to level the bottoms of jambs. If you’re installing a door on an unfinished floor and need to leave space under the jambs for carpeting, just place temporary blocks under the jambs while you’re hanging the door to keep them from moving. Make the necessary adjustments to the size of the blocks so that the bottoms of the jambs are on an even plane. According to the thickness of the carpet and pad, it is necessary to provide a gap between the jambs ranging from 3/8 inch to 5/8 inch. Check the plug for damage. When installing a door, make certain that the plug that keeps it in place has a removable plug that can be removed once the door has been fitted. You may be able to reinstall the plug by cutting the plastic strap and inserting it through the doorknob hole, if this is not the case. Far while it’s tough to move a door when the slab is swaying all over the place, it’s even more difficult to install a door that won’t open. It’s also not usually required to use shims on the top doorjamb since the casing will keep the door in place. Aside from that, walls in new homes and expansions can compress as they settle, pushing down on the tops of shims and causing the jamb to bend. Only shim the top jamb if you’re working with a 3-foot-wide door and the top jamb arrives from the factory bent
- Otherwise, skip this step.
2nd Step: How to Prevent a Door from Swinging Open
Level the floor
Check the level of the floor with a level. A level should be placed across the aperture, and it should be leveled with one or more shims. Make a note on the shim at its thickest point, and then take a measurement of the thickness of the shim at that location. The precise amount you’ll need to cut off the jamb on the opposite side of the aperture is shown in the diagram. Garage Overhead Door Repairs of the Highest Quality
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Trim the prehung door frame jamb with a jigsaw
With a jigsaw, mark and cut the jamb on the upper side of the door (remove any packaging strips at the bottom of the jambs).
After cutting more than 1/4 inch off the jamb, you may need to trim the bottom of the door so that it is in line with the floor slope. Steps for Removing a DoorStep 4
Trim the jamb with a circular saw
You may also use a circular saw to chop down jambs when they are in desperate need of being trimmed down. Install an 80-tooth blade to prevent the wood veneer from being torn out of the timber. To avoid cutting the wrong jamb, make sure to cut the jamb that sits on the high side of the floor. It’s simple to make a mistake. You can see where you marked your shim since it’s the one on the other side of the aperture. As a saw guide, a rafter square is quite useful. The most important step in any door installation is to ensure that the bottom of each doorjamb is at the right height before starting the installation.
It is possible that your latch will not line up if the floor slopes significantly and the jamb isn’t adjusted to accommodate.
Step 5: Checking and Adjusting the Garage Door
Check Your Rough Opening Carefully and Prepare the Door Before Starting
Temporary cleats should be nailed to the wall opposite the door opening so that they may function as stops for the door frame. Shimming the jambs away from the drywall with a stack of three note cards, as illustrated, will guarantee that they are centered in the wall when it is finished. Step 6 in the process of replacing a patio door
Set the door in the opening
Insert the door and frame into the aperture by pushing them together. Open the door and use a shim to keep the bottom edge of the open door firmly against the stops on the other side of the room.
Check the rough opening
Make sure your door will fit into the opening before purchasing it. First, determine the height of the aperture, followed by the breadth at both the top and bottom of the opening. After then, use a level to verify each side. Even though the sides do not have to be absolutely plumb (which they rarely are), they must be near enough to enable enough space for your door to open fully. This means that even if your rough opening is 1/2 in. larger than your door, but the sides of the opening are each 1/2 in.
Finally, check to see if the walls are squared up to each other.
Shim and nail below the bottom hinge
Adjust the bottom of the door frame so that it is approximately 4 in. higher than the floor on the hinge side, ensuring that the hinge side is perfectly plumb, and then nail it in place. Tape your level to a straight 2×4 in the manner pictured. After that, use a shim to straighten the central portion of the jamb before nailing it in place. With your straightedge, measure the whole length of the piece. How to Build a Rustic Barn Door and Hardware from ScratchStep 8
Lock the strike-side jamb in place
Nail a 4-inch 1×2 to the front edge of the jamb with a 4-inch finish nail to hold it in place.
Adjust the distance between the door and the strike-side jamb to a consistent 3/16-in. The jamb will remain in this position as long as the block is fastened to the studs. Storage Ideas for Inside Cabinet Doors: 18 Inspiring OptionsStep 10
Break away the shims
With a sharp blade, score the shims several times, and then break them off to create space for the trim to be installed. Step 11: Suggestions for Hanging Doors
Attach the trim
Finish nails in the size of No. 4 are used to attach the trim to the door frame. Finish nails in the size of No. 6 are used to attach the trim to the frame. Throughout this essay, we’ll be concentrating on the installation of conventional prehung doors. With a door jamb that is 4-9/16 inches wide and a thickness of 4-1/2 inches, these doors are designed to fit into a 2×4 wall that measures 4-1/2 inches thick. As a result, the jamb is slightly elevated above the surface of the wall on either side, and any inconsistencies in the trimmer studs of the walls are compensated for by using this method.
- The thickness of your wall and the length of your entrance will raise additional problems that we will not address here.
- Ideally, it should be 2 to 2-1/2 inches broader than the door opening.
- If your rough opening is 32 inches wide, use a prehung door that is 30 inches wide.
- Openings with a trimmer stud that is out of plumb by more than 3/8 inch from top to bottom will make it practically hard to install the door in the opening.
- Small deviations from plumb are, on the other hand, fairly common.
- The majority of installation issues arise as a result of the floor being uneven under the entryway.
- As indicated in Photo 1, you must examine the floor with an accurate level to ensure that it is level.
How Do You Fit the Jamb to Floors of Different Heights?
Cut a 1-foot-long strip of 1/4-inch plywood to the same width as your door jamb, and glue it in place. Dropping the plywood to the high side of the floor and tacking it in place allows you to use your scribe to trace the shape of the floor onto the plywood. Remove the plywood from the jamb, cut the form with a jigsaw, and glue the shape to the bottom of the jamb with wood glue.
Using a jigsaw, cut along the lines you’ve drawn. Repeat the process on the other side of the door. In certain cases, you may need to cut the bottom of the door as well if your transition is more than 1/2 inch. Garage Door Openers With Wi-FiConnectionStep 12
Set the door in place
Temporary blocks should be placed on both sides of the doorjamb to keep it flush with the drywall until the door is permanently fastened to the jamb. Make five blocks ranging in size from 4 to 5 inches out of scrap timber, then join them together with 2-inch 18-gauge brads. Glue three blocks to the latch side and two to the hinge side of the door frame (the door slab keeps the middle of the hinge side rigid). Maintain a safe distance between the blocks and the hinges so that they do not interfere with shimming.
Step 13 of How to Paint a Door
Nail the blocks to the wall
Orient the door such that it is in the center of the opening. Check to see that the space between the door slab and the jamb is uniform on all three sides of the jamb. With good preparation, the gaps will be uniform, the top jamb will be level, and the sides will be plumb if the jambs’ bottoms were properly cut prior to installation. Before fastening the blocks to the wall with a couple of 2-in., 15-gauge finish nails, double-check that the hinge side is plumb on the other side. To begin, nail the hinge side of the door first, and then double-check the gap around the door slab before attaching the blocks to the latch side of the door.
This is the point at which things become serious.
They are both open and closed.
Follow these procedures to ensure that your door installation is flawless.
Secure the door in place
The frame should be centered in the opening. Nail the upper edges of the door frame into place using a shim from either side of the jamb (ensuring that the frame is pressed against the cleats). This means that the jamb should be aligned with your temporary cleats. Take care not to twist the jamb as you nail it in place. Cabinet Doors That Are Simple and QuickStep 15
Check gap at stops
Remove the plug that keeps the door slab in place before placing any shims, and check to see that the door opens and shuts properly. The door should come into contact with the door stop in an equal pattern along the whole length of the door stop’s length. As a result, if one side of the door hits the stop first, you will need to modify the jambs by repositioning one or both of the top and bottom sides of the jambs inward or outward, depending on which section of the door strikes the stop first.
Shim behind hinges
With all three hinges open, remove the center screw from the top hinge and slide shims behind the empty screw hole, working your way down to the bottom. The jamb and framing must be filled evenly in order for the door to not be pulled out of alignment when you drive in the screw.Shift your shims in such a way that the jamb remains perpendicular to the wall if the framing on the rough opening appears to be twisted one way or another during the installation process. If your walls are plumb, check to see that the jambs are still flat with the drywall after the shims have been installed.
Check the space between the door slab and the door stop once more before closing the door.
If the gap is greater than 3/8 inch, it’s better to divide the adjustment between the hinge-side and latch-side jambs; fix the jamb so that it’s only halfway adjusted on each side. Finally, using three 2-in., 15-gauge nails, secure the shims in place.Excellent Tips for Painting DoorsStep 17
Install longer screws in each hinge
Replace one of the stock screws in each hinge with a longer screw to give the hinge more strength. Drive the screw in very gently for the last few rounds, paying special attention to the jamb and the threads. Avoid sucking in the jamb, since this might affect how straight the door swings open and close. After each screw has been installed, open and close the door to ensure that there are no gaps. In order to ensure proper penetration, ensure that the screws enter the frame by at least 1 inch.
Do not use drywall screws since they are fragile and will not withstand years of usage.
Secure the latch side
Shims should be installed and secured 4 inches down from the top of the door and 4 inches high from the floor. Install the shims in the same manner as you did the hinge portion of the project. Wind-driven slams have caused doors to be slammed shut so fiercely that the jamb on the latch side has been pushed several inches out of alignment. Install a long construction screw beneath the latch plate to avoid this issue from occurring in the future. In the corner of the latch plate area, predrill and countersink a hole to ensure that it does not interfere with the latch plate screws during installation.
Then, after the door is in its final position, nail it in place.
Doors that are sagging or sticking should be repaired.
How to Install a Prehung Door
- Level, hammer, finish nails, wooden shims, measuring tape, and a 6-foot level
It is quite OK to deviate from the procedures mentioned here; nevertheless, keep in mind that no matter what tactics are employed, the ultimate objectives remain the same: Make that the door jamb is level and plumb; that it is flush with the drywall surrounding it; and that the reveal is a consistent 1/8-inch (the space between the door and the jamb).
When you begin the process of installing a prehung door, you should first measure the rough opening into which the door will be installed. The aperture for the door should be one or two inches bigger than the actual door. You may use that wiggle area to shimm the door, putting it into the level-and-plumb position that is necessary for proper operation. Image courtesy of familyhandyman.com
Place the door into the rough opening that has been created. Is there any flooring that has not yet been laid over the threshold? It may be necessary to place a shim behind the door jamb to accommodate for the additional height that will be added after the floor is placed.
After that, check to see that the hinge side of the door is plumb, which is completely upright. As soon as you have confirmed that the door is still centered within the aperture, reinforce it by inserting shims on both sides, at the top of the opening. alevel can be used to verify if the alignment is correct. The hinge side should be flush with the neighboring drywall if the door is plumb; otherwise, nail it into the jamb at the spot where you placed the shims behind the hinge.
Continue by placing shims in a few more locations along the hinge side; checking the level a second time; and nailing through the jamb wherever you shimmed was necessary.
Close the door and check that the top half of the door is level. If you discover that the reveal isn’t consistent between the door and the jamb, don’t waste time looking for a measurement instrument. That’s a solid clue that something is wrong. Shimming the latch side of the door will allow you to make modifications. While shimming less when there is insufficient disclose, shimming more when there is an excessive amount of reveal Continue to play with the reveal along the top until it is consistent.
Bringing the jamb flush with the neighboring drywall on the latch side of the door is a good idea. If the reveal isn’t 1/8-inch here, correct the shimming you’ve previously put towards the top of the door on this latch side, which should bring it up to the proper size. Complete the project by driving a nail through the jamb where you shimmied. Additional shims should be placed six inches from the bottom of the door, as well as above and below the area where the striking plate will be installed.
To complete the project, drive a couple more nails into the shims you previously fastened. Your pre-hung door is now level and plumb, and the reveal is consistent throughout!
How to Install a Pre-hung Door
Dillon B. wrote this article (Additional writing by Ryan O.) When it comes to installing or replacing a new door in your home, using a pre-hung door is one of the most convenient options available. When a pre-hung door is installed, it means that the door is already installed in its own frame, which ensures that the door will freely swing and operate as needed, which is the most crucial function of the door. If you want a flawless fit, however, be sure to follow these directions while installing your new door!
- Tools: Shims, a knife, an angle finish nailer (Brad Nailer), an electric drill, a multi-purpose tool, three-inch screws, a level, a reciprocating saw (Sawzall), and other items.
Step 1: Remove the door trim and the door itself
With a blade, score down the side of the door trim (what we typically refer to as the paneling that frames the door) to loosen and remove it from the door. Make sure to do this on both sides so that you may have access to the door jamb on the other side. By removing the screws, you may take the door and the hinges off.
Step 2: Remove the door jamb
Take out the door jamb, which is the section of the door frame that has direct contact with the door itself. The quickest and most suggested method is to use a reciprocating saw or a Sawzall to cut the jamb in two and remove the pieces, which is the fastest method. Removing any fasteners that hold the jamb to the frame of the home is a good first step. Their location is frequently in close proximity to either the door hinge area or the striking plate (which is a metal plate that interacts with a doorknob’s bolt).
Step 3. Remove the threshold (if the door has a threshold)
Some doors have a metal plate beneath them called the threshold, which users must cross in order to open the door. During this step, you will want to get rid of anything that is in the way.
Step 4: Prep the Pre-Hung Door
Remove the cardboard wrapping off the prehung door and set it aside for later use. Then dry-fit the door, which simply means to place the pre-hung door in the door opening to ensure that it will function properly before proceeding. If any of the frame’s sides are excessively lengthy, you will need to make adjustments to the frame by cutting it. In this case, the door and frame are both 14 inches too tall, resulting in the frame slamming into the door frame. The frame was marked with a 14-inch margin on both sides of the frame, and we cut the excess frame off using a multipurpose tool (a skill saw is also advised) to make it fit.
If the door frame has to be lifted into the right position in the door opening, shims can be placed at the bottom of the frame. In this particular instance, a 14-inch shim on both sides of the door frame was required to secure the door in its right position.
Step 5: Insert shims on the hinge side of the door to make the door frame plumb and level
Verify that the hinge side of the door opening is vertically straight (plumb) and horizontally straight (level) by measuring the distance between the hinges. By measuring how far the hinge side of the door opening is from being vertically straight, we will be able to determine how much the side of the door will need to be modified with shims, or little blocks of wood used to modify the door frame and hinge. Set a straightedge, such as a four- or six-foot level, against the jamb on the hinge side of the door and check for any gaps between the jamb and the straightedge.
Those shims will most likely be inserted just below the hinges, if at all.
Step 6: Secure jamb and cut off shims
Using an angled finish nailer, fasten each of the shims to the jamb with a couple of nails after you have aligned the jamb on the door hinge side with the plumb line (also called a brad nailer). After that, trim away any surplus shims from the side of the jamb.
Step 7: Start shimming the strike side of the door to make the reveal (the gap between the door and the frame) consistent
As soon as you have confirmed that the hinge side of the door is plumb and level, the next step is to inspect the reveal to ensure that it has a consistent gap all of way around the door, including the strike side of the door (where the doorknob is located) and at its top, which should be plumb and level as well. It is necessary to double-check that the hinge side is plumb and level again before continuing to shim on the other side if it is not consistently plumb and level. In the next step, insert shimming along the side of the door that will hit, ensuring sure that the reveal between the frame and door is uniform throughout.
Ensure that there are shims above and below the striking plate as you work your way down to strengthen and give strength to that location.
Small adjustments can be made by tapping the jamb or the door stop in the direction you desire using a wood block and a hammer, if necessary.
Step 8: Shim the top of the door and make sure the reveal is consistent at the top
Then repeat the process at the header (the top of the door) and insert shims where the gap between the door and the frame is less than level. Once again, use a brad nailer to fasten each of the shims and trim away any extra material. Small adjustments can be made by tapping the jamb or the door stop in the direction you desire using a wood block and a hammer, if necessary.
Step 9: Test the door
Check that the door can swing freely without being obstructed by anything by swinging it. This particular model has a swing that is 14 inches above the floor, which eliminates backdraft in the event of a fire.
Step 10: Install the door casing (door trim)
The trim will now be used to conceal the shims. Select the distance between the trim sets and the jamb that you want them to be set back. Specifically, we are going with a 3/16″ reveal in our scenario. Make a mark along the jamb all the way around to indicate where the trim will be installed. Take the measurements of the corners that you indicated. Due to the fact that this is the shorter distance of the trim, a mitered joint cut at a 45-degree angle to the trim will be required in order for all three angled cuts to be aligned at the corners of the door trim.
Once it is completed and in place, use the points at the section of the header trim as a starting point for determining the measurement of the trim at the sides of the door, as shown below.
Install the necessary measured trim after it has been cut. In this case, repeat the process on both sides of the door (in separate rooms) to ensure consistency in the reveals that exist between the door jamb and the door trim
Step 11: Install doorknob and strike plate
This project has officially come to a close! Visit our YouTube channel for additional films in our Home Modeling Series, or read our other posts on the Best Online Cabinets blog for more information on this topic.
Installing a Prehung Interior Door & Jamb Switch
When it came to creating our ideal home, we were aware that there were some tasks that we were capable of doing and that made financial sense for us to undertake. Our inside doors (all 34 of them) were one of those jobs that needed to be completed. I’ve previously installed a prehung outside door and changed an interior door slab, but I’ve never done it with a prehung interior door before. Obviously, I turned to YouTube for some inspiration. Using some of the techniques I discovered on the internet, my first door installation took far too long, and I was unable to do it perfectly on my own.
We were able to swiftly devise a foolproof system that allowed me to install a prehung door flawlessly in less than 15 minutes with no mistakes.
In this article, we’ll take things a step further and demonstrate how to “rough in” a jamb switch into the door frame itself.
For those of you who are as enthusiastic about this as we are, you might want to consider following us on Instagram, where we provide sneak peeks and behind-the-scenes content in our stories.
Full Project Video
Interested in seeing how it all came together? Make sure to watch the entire project video embedded below, and subscribe on YouTube so that you don’t miss any future videos! It should be noted that the affiliate links provided in the “materials” and “necessary tools” sections are paid connections. Interested in learning more about how you can support our site and help keep our material free? Learn more about how we can generate money at no additional cost to you. This procedure will allow you to complete the installation of a prehung door by yourself in less than 15 minutes.
If you are not installing a jamb switch, you may go to step 2 without any problems.
Step 1: Plumb the Hinge Side
Check the jack stud on the hinge side of the door with a 6ft level to ensure it is plumb on the hinge side of the door. The jack stud is an inner stud of the door frame (there are two of them on each side) that is responsible for supporting the header. If it is not plumb, you will need to shim out the hinge side of the door so that it becomes so. This procedure is as simple as inserting a shim or shims between the level and the jack stud until the level indicates that it is level. Tapping the shim in place will allow you to align the frame with it later on in the process.
It is possible to proceed with the installation of the door in the aperture if it is plumb.
Please keep in mind that if you have previously installed flooring, you will need to trim the bottom of the door frame to match the heights of the existing door frames.
Step 2: Roughing in the Jamb Switch
When it comes to closet doors, a jamb switch is a fantastic concept. This is a basic trigger that is mounted in the jamb, and when the button is touched, it stops the circuit and shuts off the closet light. Whenever the door is opened, a spring-loaded button completes the circuit and illuminates the room. If you are not installing a jamb switch, you may go to the following step without further ado. A jamb switch is accompanied with an electrical box that matches the switch. This box will need that the jack stud be notched out in order to be accepted.
I began by noting the location of the box in order for it to match the notch in the jack stud and wire placement on the jack.
Afterwards, I pulled the wire through and used an oscillating tool to make a hole in the box for the box.
After fishing the wire through the rear of the box, I identified the box and used a self-centering bit to drill pilot holes in the bottom of it.
Step 3: Park the Hinge Side
It’s time to put a temporary hold on the frame for the time being. This will be referred to as “parking.” Begin by flushing up the door jamb on the hinge side of the door with the surrounding drywall. For this, I prefer to use a speed square, but any little straight edge would do just fine. This should be done all the way up the frame and on both sides of the door frame. Then, using 2 inch 18 gauge brad nails, secure the hinge side of the door frame in place. These will hold the frame in place for a short period of time while still permitting small changes.
Step 4: Level Top and Park Striker Side
Examine the reveal (the space between the door and the frame) across the top of the door to ensure that it is not too small. You want this reveal to be around 1/8′′ thick all the way around the door. For the time being, we shall concentrate on the very top. Using a shim beneath the striker side of the door frame and adjusting until the reveal is constant, you may make the reveal tighter on the striker side. You may insert a shim under the door frame on the hinge side (you may need to use a tiny pry bar for this) and adjust the reveal until it is uniform on both sides.
On this side, you will need to shoot the jamb with three or four sets of brad nails that are equally spaced (similar to hinge locations).
It’s time to make the necessary adjustments to ensure a consistent reveal.
Instead of attempting to press it too tightly against the door, simply open it up and tap on it with your palm until it is exactly where you want it. If the reveal is a little too close to the side at the very top, that is quite OK. It will be revised upon the completion of the next phase.
Step 5: Secure Hinge side
Inspect the frame for gaps and high areas with a 6ft level, which should be placed on the hinge side. If required, use a shim to ensure that the jamb side is exactly straight. In addition, make certain that the frame is square with the wall. This may be accomplished by the use of asquare. Trim screws of 2-1/2′′ length can now be used to fasten the hinge side. The screws with reverse threading at the top are my favorites since they allow you to “micro” modify the frame placement by backing out the screw a small amount.
Step 6: Adjusting the Top (Laterally)
The top of the frame can be moved to one side or the other if it is too far to one side or the other for any reason, and this results in one or more of the reveals at the tops of the sides being too tight. To do so, shim the opposing side (the side with the excessively big gap) until the problem is resolved.
Step 7: Secure the Striker Side
You should be really close by this point. Check your reveals once more and make any necessary adjustments to the frame to get them exactly where you want them. As you intend to screw in each site (which should be identical to the hinge locations), place shims between the frame and the jack stud to ensure that they are snug but do not push the frame out. Remember to keep it closed and check for a constant reveal while you’re shimming. To ensure that the reveal is constant throughout and that you have the shims in place, screw through the shims and into the jack-stud.
Afterwards, using an autility knife, score the shims and snap them off.
All that remains is to finish the trim, paint the walls, and attach the door hardware.
How to Install a Pre-Hung Interior Door
When it comes to installing a pre-hung door, it may be a daunting undertaking for someone who has never done it before, and it can be incredibly aggravating even for a seasoned builder. Here, we’re going to go over exactly what it takes to install a pre-hung door, how you should go about it, and which method you should employ.
How Much Does It Cost to Install a Pre-Hung Door?
The cost to install a pre-hung door can vary significantly depending on the location of the installation, the quality of the door, and the hourly rate of the contractor performing the installation. According to Home Advisor, the national average labor cost in the United States for installing an inside door ranges from $150 to $300 per door. Not to mention the price of the door, which is not included. The cost of an inside door fromLowe’s or Menards can range from $60 to $200, depending on the quality of the construction and the materials utilized.
There is a big variation in quality across the different pricing ranges, so be sure you pick the proper combination of quality and affordability for what you’re trying to accomplish.
Even though the kind and price of door will provide you with the biggest variety of options, it is critical that your choice is one that will endure for many years to come and will help you avoid many typical door installation difficulties.
Your best chance will be to choose someone with years of expertise and a large number of favorable client evaluations on their resume.
According to the above-mentioned typical estimates, installing a pre-hung door might cost anywhere from $210 to well over $500. A wide variety of costs for someone wanting to budget and plan a door installation job, especially if there are several doors to install, is a significant concern.
Install a Pre-Hung Door: Which Method Should I Use?
We’ll next go through the mechanics of how you should go about installing your door, including which approach is the most effective. Installing a pre-hung door is a complicated operation, and getting it correctly the first time is critical to the door’s functionality for many years to come. Traditional techniques of pre-hung door installation demand a high level of expertise and experience in order to be done correctly. The typical contractor can complete the installation of a pre-hung door in 20 minutes to an hour, depending on a variety of criteria, including the quality of the frame.
- Given the probable length of time that may be required to finish the installation, it would be wise to hire on the basis of cost per door installation rather than hourly rates.
- The complexity of the installation can also be greatly influenced by the presence of a properly sized trough aperture.
- After measuring the door and jambs, as well as the rough opening, ensure that there is enough space for the jambs to fit properly with room to spare for adjustments.
- Following that, you may need to trim the door 1-2 inches from the bottom to make place for carpeting or flooring underneath.
- If the rough opening is too small, the door frame will be cut.
- The closer your rough opening is to plumb, the simpler it will be to work with the door.
- Insert the shims between the door and the rough opening, starting on the hinge side and working your way out.
- Make certain that the shims are inserted as near to the hinge as possible.
- This is especially useful if the door is hefty or made of solid core material.
- Using a shim beneath the low side and reducing the lower jamb of the door on the high side, you may achieve this result in a few minutes.
Getting every side of the door plumb will need some further adjustments. It is important to consider the influence that closing or widening a gap on either side will have on the other side.
After the Shims Are in Place
- Remove the center screw from the top hinge on the frame and replace it with a screw that is 2-1/2″ in length to complete the installation. All hinges may be adjusted, but the top hinge in particular must be adjusted to prevent heavy or solid core doors from drooping over time. Install the trim around the window. It is important to ensure that the shims do not extend past the edge of the drywall, as this will result in your trim not fitting firmly against the wall. Lightly sand the door to eliminate any tiny scratches or smudge that have occurred as a result of handling or delivery
- Follow the manufacturer’s recommendations for staining, painting, or applying clear coat. Using a finish on all six sides of the door will help to avoid delamination or warping.
Using an ocillating tool to cut off the shim is recommended, or using a sharp knife, score both sides of the shim before breaking them off. If you want to learn more about shimming doors, see our tutorial on the subject. If it appears that this is a time-consuming and frustrating process for a simple pre-hung door installation, that is precisely what it is: it is. Shims are an antiquated way of installing doors that has remained steadfast in the building industry for far too long due to a lack of willingness to adapt.
An Easier Door Installation: EZ-Hang
The EZ-Hang door installation method consists of seven brackets. It fully eliminates the requirement for shims and eliminates the need for any learning curve associated with the process of installing a door. EZ-Hang is a tool that may be used to quickly and simply install a pre-hung door on both the inside and outside of a building, as well as windows and extension jambs. With this bracket technique, rather than utilizing shims, anybody can easily and quickly install a door in less than 5 minutes, regardless of their skill level.
EZ-Hang, in contrast to shims, which take several unpleasant episodes of trial and error, going back and forth between both sides of the door in an attempt to maintain it plumb, requires only three easy steps and no prior knowledge to install.
It is now possible to level the top of the door jamb in the same manner as it is to plumb the sides, with practically no modification required thanks to the addition of a seventh bracket.
However, with EZ-Hang, the trim is able to rest directly on top of the bracket.
When dealing with difficult rough openings, such as those found in older homes, the innovative adjustable slots in the EZ-Hang brackets make them significantly superior to shimming.
The following section will show you how to properly install these simple door installation brackets.
How to Install a Pre-Hung Door: EZ-Hang
EZ-Hang, in contrast to shims, needs only three easy actions. This simple door installation approach also eliminates the need for guessing, resulting in clear and simple installation instructions that are simple to follow and understand. There’s no need to cut, bend, or go back and forth between the two sides of the door while using this method. Check out this video to see how to install a door with EZ-Hang: