
Building a custom medicine cabinet for your bathroom is an excellent way to maximize storage while adding a personal touch. Whether you’re tired of cluttered counters or want a stylish, functional addition to your bathroom, this guide will help you make your own medicine cabinet with clear, practical instructions.
1. Determine the Location and Size

The first step to building your own medicine cabinet is selecting the perfect location. The cabinet should be easily accessible but not obstruct other bathroom elements like mirrors or towel racks. Typically, medicine cabinets are placed above the sink.
Important Measurements to Consider:
- Width: 18–24 inches
- Depth: 5–6 inches, depending on the storage you need
- Height: 24–30 inches
Once you have your location and dimensions, double-check the space to ensure that no fixtures, pipes, or electrical lines will interfere with your cabinet installation.
2. Select Materials and Tools

Choosing the right materials is key to ensuring that your medicine cabinet is durable and moisture-resistant. Wood types like cedar, oak, and maple are ideal for a bathroom setting, as they resist moisture well. Plywood also works great for the back panel.
Materials You’ll Need:
- Wood: Moisture-resistant woods like cedar or plywood
- Mirror: To fit your door frame dimensions
- Hinges and Handles: Sturdy, high-quality hinges and handles to support the weight of the door and mirror
- Wood Finish or Paint: Use moisture-resistant paint or wood finish to protect the wood
- Shelf Pins (Optional): For adjustable shelves
Tools Required:
- Measuring tape
- Circular saw or miter saw
- Drill
- Wood glue
- Pocket-hole jig (optional, but helps for a cleaner finish)
- Sandpaper
- Paint or wood finish
- Stud finder (for installation)
3. Prepare the Space and Frame the Cabinet

After selecting your materials and tools, it’s time to frame the cabinet. Start by cutting the wood to size for the cabinet’s top, bottom, sides, and back panels.
- Top and Bottom Pieces: Cut two pieces to the width of your cabinet.
- Side Panels: Cut two pieces to the height of your cabinet.
- Back Panel: This should fit snugly inside the frame.
Assemble the frame by applying wood glue to the edges of the pieces and securing them with screws or nails. Ensure everything is square, as this will guarantee the cabinet is sturdy and fits properly when mounted.
4. Add Shelves for Organization

Shelves are essential for keeping your items organized. You can make either fixed shelves or adjustable ones, depending on your preferences.
- Adjustable Shelves: If you prefer adjustable shelves, use a shelf pin jig to drill evenly spaced holes on the side panels.
- Fixed Shelves: If you opt for fixed shelves, simply secure them in place with screws.
To make your shelves, measure and cut the wood to fit snugly between the side panels. Place them into position, ensuring that they are level.
5. Craft the Door and Mirror Frame

The door is the focal point of your medicine cabinet, so it’s important to craft it carefully. Use 1×4 lumber for the door rails and 1×3 for the stiles.
Door Frame Construction:
- Cut the rails and stiles to the appropriate size.
- Assemble the frame using wood glue and screws or pocket holes.
- Once the frame is assembled, measure and cut a piece of high-density fiberboard (HDF) to fit inside the frame.
- Apply mirror adhesive to the back of the mirror and place it onto the HDF backing.
Framing the Mirror:
- For a finished look, frame the mirror using 3/8-inch cove molding around the perimeter. Secure the molding with wood glue.
6. Install Hinges and Attach the Door

Once your door is complete, it’s time to attach it to the cabinet. Strong hinges are crucial to support the weight of the door and mirror. Install the hinges on the door and cabinet frame, making sure they are positioned about 3 inches from the top and bottom.
Additional Tips:
- Test the door after attaching the hinges to ensure it swings smoothly.
- Consider adding a magnetic catch to keep the door closed when not in use.
- For a high-end finish, use soft-close hinges to prevent slamming.
7. Finish the Cabinet
Before you install your cabinet, make sure to sand all surfaces to remove rough edges and prepare the wood for paint or stain.
Finishing Options:
- Paint: Apply a moisture-resistant, semi-gloss paint to protect the wood.
- Stain: If you prefer a natural wood look, apply a wood stain and seal the surface with a protective coat.
Allow the paint or stain to dry completely before moving to installation.
8. Install the Medicine Cabinet

With the cabinet finished, it’s time to install it in your bathroom. Ensure the location is clear and that the cabinet fits securely in the space.
Mounting Steps:
- Use a stud finder to locate the wall studs.
- If you are installing a recessed cabinet, ensure that it fits snugly between the studs. If not, mount it on the wall.
- Mark the screw locations and pre-drill holes in the cabinet.
- Use wood screws to secure the cabinet to the wall, ensuring it’s level.
Tip: Make sure the cabinet is perfectly level before securing it fully to avoid crooked installation.
9. Customize and Add the Finishing Touches

Customize your medicine cabinet to make it uniquely yours. Here are some ideas:
- LED Lighting: Install LED strips inside the cabinet for better visibility.
- Magnetic Strips: Add magnetic strips to the inside of the door to hold small metal items like tweezers or nail clippers.
- Organizers: Use small baskets or trays inside the cabinet for better organization of smaller items.
Building your own Medicine Cabinet is a rewarding DIY project that combines functionality, style, and customization. By carefully planning the size, selecting quality materials, and following each construction step, you can create a durable cabinet that perfectly fits your bathroom’s design and storage needs.
FAQs
1. How can I make my medicine cabinet more moisture-resistant?
Apply a waterproof sealant or semi-gloss paint after sanding the wood. Use silicone caulking around joints to prevent water seepage. Choose rustproof hinges and handles for long-term durability.
2. What should I do if the door doesn’t align properly?
Loosen the hinge screws slightly and adjust the door until it’s even. Use a level to check alignment before tightening again. If needed, add a thin washer behind one hinge for balance.
3. Can I install a recessed cabinet without cutting into the wall studs?
No, recessed cabinets require cutting between studs for a snug fit. Always use a stud finder to locate framing before cutting. For an easier option, go with a surface-mounted design instead.
4. How do I make sure my cabinet stays level during installation?
Mark screw points using a spirit level before drilling. Secure one screw first, then recheck the level before tightening the rest. Using wall anchors can help maintain stability if studs aren’t perfectly aligned.
5. What’s the best way to add lighting inside the cabinet?
Use stick-on LED light strips or motion-sensor lights for easy installation. Position them along the inner edges for balanced brightness. Choose battery-operated models if you want to avoid wiring.
