
Building a loft bed attached to the wall can be a fun and rewarding DIY project, but before you start, it's essential to choose the right materials. You'll need 2x4s for the frame, 3/4-inch plywood for the bed deck, and a wall bracket kit that includes screws and anchors.
To ensure the bed is sturdy, you'll want to use a wall bracket kit that can support at least 200 pounds per square foot. This will give you peace of mind knowing your bed can handle the weight of a grown adult.
The wall bracket kit typically consists of two brackets, one for each side of the bed frame. These brackets will be attached to the wall studs, usually 16 inches on center, to provide maximum support.
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Materials and Planning
To build a loft bed attached to the wall, you'll need to gather the right materials. You'll need 5 eight-foot long 2×4 boards for the frame, and 8 eight-foot long 1×6 boards for the slats.
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A Kreg Jig is highly recommended for this project, but not essential. You'll also need wood glue, wood screws, and aircraft cable wire. Consider adding storage space underneath the bed by using practical minimalist wall-mounted shelves or building a toy box.
Here's a list of the materials you'll need:
- (5) 8 foot long 2×4 boards
- (8) 8 foot long 1×6 boards
- Kreg Jig (optional)
- Wood glue
- Wood screws (Kreg self drilling 2.5″ pocket screws if using pocket holes)
- Aircraft cable wire – 1/8″ – 3/16″
- (2) Wire rope clips
Planning is key to completing this project in a single day. You'll need to consider the size of the bed and how you plan on using the space underneath. A good starting point is to make enough space in your room and gather your tools before buying the materials.
Materials Needed
To get started on your project, you'll need to gather the necessary materials. A Kreg Jig can be useful, but it's not essential. Wood glue and screws are must-haves, so make sure to add those to your list.
You'll need a variety of lumber pieces, including 2x4s, 2x6s, and 1x4s. The specific types and quantities will depend on the project you're working on. For example, you may need 5 2x4 boards that are 8 feet long for a loft bed.
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Here's a breakdown of the lumber pieces you'll need:
Aircraft cable wire, wire rope clips, and eye screws are also necessary for securing the bed frame. You'll need a saw to cut the lumber, and a drill to make holes for the screws. A miter saw can make the job go faster, but a handheld circular saw will also work fine.
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Planning
Planning is key to building a successful loft bed. Before you start, consider how big you want it to be and how you plan on using the space underneath.
You can build a loft bed in a single day if you plan everything well in advance. This means making enough space in your room and gathering all the necessary tools.
To determine the height of your loft bed, think about how you'll use the space underneath. If your child has a lot of toys, you might want to add storage space.

You can build a folding desk and attach it to the wall underneath the bed to create a workspace. This gives you room for lounging in a comfy chair or beanbag.
If you have a room with a sloped ceiling, make sure the bed's entrance and headboard are both at the furthest point away from the ceiling. This will help you plan around the sloped ceiling.
Building a loft bed can be a great solution for small spaces, freeing up area in the room.
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Creating the Slats
Creating the slats is a crucial step in building your custom headboard. You'll need to attach the slat supports to the sideboards first.
To position the first slat support, place it on the inside of the outer board so that the top is even with the top of the support post. Secure it in place with seven 2 ½" screws.
The second slat support goes on the inside of the sideboard, with its top even with the top of the support post. It's also secured with seven 2 ½" screws.
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You'll need to add end supports to the headboard and footboard. The top of each end support should be even with the top of the side slat supports. Secure them in place with four 2 ½" screws.
Now it's time to add the slats. You'll need 14 of them, spaced evenly along the slat support. Each slat is attached by drilling a pilot hole at each end into the side slat supports and securing them with two 1 ½" screws.
Here's a quick rundown of the slat attachment process:
- Drill a pilot hole at each end of the slat into the side slat supports.
- Secure each slat with two 1 ½" screws.
From Pallets
Using pallets as a building material is a great way to save time and money. They're ideal for this purpose, making them a popular choice for DIY projects.
Euro pallets are a good option because they're sturdy and can be easily sourced.
Screwing each side of the pallet loft bed into the wall is a good idea for added safety. This will prevent the bed from tipping over and ensure a secure structure.
Building a pallet sofa is a natural extension of creating a pallet loft bed, as the skills and materials used are similar.
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Platform and Frame Setup
To build a strong foundation for your loft bed, you'll need to set up the platform and frame. Start by building the frame using 2" x 4" boards, making sure to use a Kreg Jig to create pocket holes on the joist boards. If you don't have a Kreg Jig, you can drill pilot holes for the screws.
Attach the inside joist boards to one of the long boards using Kreg self-drilling 2.5" screws. Work on a flat surface and use a 90-degree triangle to ensure the boards are at right angles, and don't forget to use wood glue at each joint.
To create the lower structure, start by building the support post, attaching two 2x4s face to face with ten 2 ½" screws. Then, level the post by placing a level on top of the footboard and adjusting it until it's perfectly level.
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Platform Frame Setup
To set up the platform frame, start by using 2″ x 4″ boards. You'll need to make pocket holes on each end of the joist boards using a Kreg Jig.

The long 81.5″ boards won't need pocket holes, but you'll want to drill pilot holes slightly smaller than the width of your screw, right through the face of the 81.5″ board, if you choose not to use a Kreg jig.
It's essential to work on a flat surface to ensure accuracy. A 90 degree triangle can be helpful in ensuring the boards are attached at right angles.
Use Kreg self-drilling 2.5″ screws to attach the inside joist boards to one of the long boards.
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The Upper Structure
To build the upper structure of your platform bed, you'll want to start by measuring for the desired height, taking into account any clearance you need underneath the bed and any furniture that will be going underneath it.
Decide on the clearance you want underneath the bed and measure it with a measuring tape, writing it down to ensure you have it right. It's essential to take into account any furniture that will be going underneath the bed, so don't forget to factor that in.
Attach the headboard to the wall using four 4" lag bolts and washers, making sure to drill pilot holes slightly smaller than the diameter of the lag bolts into the wall studs and headboard. Secure the headboard to the wall with a ratchet or wrench.
For the sideboard, drill pilot holes into the wall studs and sideboard piece, then attach it to the wall using eight 4" lag bolts and washers. Secure the sideboard to the wall with a ratchet or wrench.
Attach the footboard to the sideboard using two 4" lag bolts and washers, making sure to drill pilot holes into the end of the sideboard and face of the footboard.
Here's a quick rundown of the steps to attach the upper structure:
- Attach headboard to the wall
- Attach sideboard to the wall
- Attach footboard to the sideboard
By following these steps, you'll have a sturdy upper structure for your platform bed, ready to hold your mattress and other bedding.
Build a Ladder
Building a ladder is a crucial part of setting up a platform and frame. We used 2x4s for the rails.
To start, you'll need lumber for the ladder's structure. For the steps, 1×6 boards are a good choice.
The height of your lofted bed may require modifications to the ladder's design. You'll need to adjust the ladder's height accordingly.
A YouTube video is a great resource for learning how to build a ladder, and we used a similar process in our own project.
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Wall Attachment
To attach your loft bed frame to the wall, you'll want to start by locating the studs using a stud finder. These tools are usually very accurate, but if you're still unsure, you can nail in a small nail to test for resistance.
Mark the center of the studs with painter's tape, and use a level to draw a line on the wall at the desired height. Our loft bed is installed 32 inches from the top of the frame to the ceiling.
Drill pilot holes into the back board of the bed frame, spacing them two inches apart. This will help prevent the wood from splitting and make it easier to screw into the wall.
Use 3″ wood screws to attach the side and back boards of the frame to the two walls, spacing them two inches apart. We used two wood screws per stud, but you could also use lag screws as well.
Here's a summary of the steps:
- Locate the studs in your wall using a stud finder.
- Mark the center of the studs with painter's tape.
- Drill pilot holes into the back board of the bed frame.
- Attach the frame to the wall using 3″ wood screws.
Top Boards and Railings
To install the top boards, you'll screw them into the frame from the top down into the frame. Measure the distance between the 2×4 boards of the base and use a pencil to mark these lines on the top of each board.
Pre-drill pilot holes (2 holes into each of the 1×6″ boards where it will be attached to the frame) using a countersink drill bit. This will make it easier to screw the boards into place.
Stand on a ladder to access the top of the bed and screw the first couple of boards onto the top of the frame. Once there is enough room to sit on those boards, you can get up on the bed to install the rest of the top boards.
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Space the boards out slightly with a small gap between each board to avoid having to rip down the last board against the wall. This will also make the installation process smoother.
To make the guard rails for your lofted bed, use 2x4s, 2x2s, and 3/8″ x 3″ pine molding strips. Attach the end railing braces (2x4s) to the 1x6s top boards by screwing them from underneath the bed, through the top boards, and into the 2×4 railing brace.
Attach the inside braces (2x2s) in the same way, spaced evenly apart across the span of the bed. This will provide additional support and stability to the guard rails.
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Tips and Precautions
If you're planning to build a loft bed attached to the wall, there are a few things to keep in mind. First, make sure to follow safety guidelines to avoid accidents.
To ensure stability, consider the size of your mattress. If you're using a design that's only suitable for a single mattress, be aware that you'll need to install additional support if you move to a bigger mattress.
Here are some specific requirements to keep in mind:
- For a wider mattress, an additional 2x4 support must be installed between the head and the footboard.
- This support should be installed perpendicular to the mattress' support slats.
Tips

When attaching the slats to the slat support, only one screw at each end is required. The screw is not so much a support as something to prevent the slat from sliding around.
Rounding the top and bottom edges of the outward face of the rail supports will give your project a much better look. To do this, remove 1/2 of wood at a 45-degree angle at the top and bottom of one face and then round over with a sander.
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Warnings
When working with this design, it's essential to be aware of some crucial warnings.
This exact design should NOT be used for something wider than a single mattress. It's not suitable for larger mattresses, so you'll need to take extra precautions.
To move to a bigger mattress, you'll need to install an additional 2x4 support between the head and the footboard, perpendicular to the mattress' support slats.
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Custom Built-in
Building a custom loft bed attached to the wall requires careful planning and consideration of the space you have available.
You can attach the bed to the wall at the back and one end to provide extra support and stability, as seen in example W:3, where a loft bed was built over an existing Murphy Bed.
A heavy-duty leg or corner post can be used to support most of the weight of the bed, making it a great option for small bedrooms with slanted ceilings.
In some cases, you may want to widen the bed to accommodate personal items, as was done in example W:6, where a twin loft bed was made a little wider to fit stuffed animals on either side of the mattress.
A plywood platform is a great choice for the bed base, providing a sturdy and reliable surface for the mattress.
An angled end ladder is a nice touch, making it easy to climb up and down the bed, as seen in example W:6.
You can also add a double bookshelf headboard to provide additional storage and a cozy reading nook.
Customization is key when building a loft bed attached to the wall, so be sure to measure your space carefully and choose features that fit your needs.
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Steps
Cut the wooden posts to your exact specifications before starting the project. This will ensure a smooth and accurate build.
Get the wooden posts from a supplier or a DIY store. You can also use sandpaper to smooth out the joints before assembly.
Sand the wooden slats if you plan to apply a preserver to protect the wood. This is especially important if the bed will be used outdoors.
Screw two brackets to each post at a height of 160cm. This will provide a secure attachment point for the bed frame.
Attach the shorter post to the desired corner of the room, making sure it's straight with a spirit level. Drill directly through the post to attach it to the wall.
Screw the second post to the wall and place a longitudinal beam on the short post. Rest the beam on the brackets for added support.
Fix the third post to the wall, placing the crossbar on the short post and securing it to the bracket with two screws. This will provide additional stability to the frame.
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Attach the last crossbar to the brackets, ensuring the frame is level and secure.
Cut the base boards to fit the posts, starting from the side nearest the wall. Attach the first board with two screws and repeat the process for the remaining boards.
Cut out a recess to fit the posts when attaching the base boards. This will ensure a snug and secure fit.
Attach the shortest post, which will serve as an entrance to the loft bed, to the boards with two brackets. This will provide a safe and easy access point to the loft area.
Cut the side panels at an angle for the corners, ensuring a smooth and flush fit. Attach the side panels to the posts with two screws per board.
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