DIY Mirror Cabinet: A Stunning Bathroom Renovation Addition

Updated at: 28/05/2025

Transforming your bathroom from drab to fab doesn't require a fortune or a professional contractor. A simple yet impactful upgrade, a DIY mirror cabinet, can elevate the entire space, adding both functionality and a touch of modern elegance. Imagine the convenience of having all your toiletries neatly stored away, hidden behind a stylish mirrored surface that also brightens your bathroom. This sleek addition not only maximizes space but also creates a sophisticated and polished look, perfect for a relaxing sanctuary. Forget expensive, pre-made options; with a little effort and the right guidance, you can craft a customized mirror cabinet that perfectly fits your bathroom's style and needs.

This article will guide you through a comprehensive, step-by-step process to build your own stunning mirror cabinet. From selecting the right materials and tools to mastering the intricacies of installation, we’ll cover everything you need to know to successfully complete this rewarding DIY project. Prepare to be amazed at the transformation you can achieve, all while enjoying the satisfaction of creating something beautiful and practical with your own hands.

Preparation and Safety Guidelines

Tools Needed
  • Wood
  • Mirror
  • Router
  • Table Saw
  • Drum Sander
  • Chisel
  • Marking Knife
  • Spines
  • Glue
  • Clamps
  • Sandpaper
  • Paint
  • Varnish
  • Foam Roller
  • Contact Adhesive
  • Laminate
  • Screws
  • Drill
  • Diamond Drill Bit
  • Silicone
  • Plexiglass
  • Hinges
Safety Guidelines
  • Always disconnect the power to the bathroom circuit before starting any electrical work, even if just installing a light inside the cabinet. Improper wiring can lead to serious injury or death.
  • Use appropriate safety glasses and gloves when working with glass, mirrors, and sharp tools. Broken glass can cause serious cuts.
  • Ensure the cabinet is securely fastened to the wall using appropriate wall anchors and screws suitable for the weight of the cabinet and its contents. A poorly secured cabinet could fall, causing injury or damage.

Step-by-Step Instructions

  1. Mirror Removal and Cabinet Construction

    • Remove the mirror from its existing frame. Use TPS (presumably a type of adhesive remover) to soften the adhesive for easier removal.
    • Mill the top, bottom, and sides of the cabinet from wood.
    • Cut curves in thicker stock to match the mirror's shape and connect the corners.
    • Cut grooves in both sides of each joint to create a spline joint. This strengthens the cabinet.
    Cut grooves in both sides of each joint to create a spline joint. This strengthens the cabinet.Cut grooves in both sides of each joint to create a spline joint. This strengthens the cabinet.Cut grooves in both sides of each joint to create a spline joint. This strengthens the cabinet.Cut grooves in both sides of each joint to create a spline joint. This strengthens the cabinet.
    Mirror Removal and Cabinet Construction
    • Cut and shape the splines, ensuring a tight fit.
    • Cut shelves to size, accounting for the wall outlet in the bottom shelf.
    • Cut dadoes for the shelves using a simple jig setup.
    • Cut rebates on both sides of the cabinet for panels (back and door).
    Cut rebates on both sides of the cabinet for panels (back and door).Cut rebates on both sides of the cabinet for panels (back and door).Cut rebates on both sides of the cabinet for panels (back and door).Cut rebates on both sides of the cabinet for panels (back and door).
    Mirror Removal and Cabinet Construction
    • Glue and clamp the cabinet together. Sand the interior.
    • Sand the inside corners, using a flap sander or similar tool.
    • Route rebates on the inside corners.
    • Shape the outside corners using an orbital sander.
    Shape the outside corners using an orbital sander.Shape the outside corners using an orbital sander.Shape the outside corners using an orbital sander.Shape the outside corners using an orbital sander.Shape the outside corners using an orbital sander.Shape the outside corners using an orbital sander.Shape the outside corners using an orbital sander.
    Mirror Removal and Cabinet Construction

  2. Panel Preparation and Finishing

    • Cut and paint/varnish the back and door panels. Use pearl-escent paint for a unique look.
    • Glue laminate to the back panel using contact adhesive.
    • Apply varnish to the back of the door and the cabinet.
    Apply varnish to the back of the door and the cabinet.Apply varnish to the back of the door and the cabinet.Apply varnish to the back of the door and the cabinet.Apply varnish to the back of the door and the cabinet.
    Panel Preparation and Finishing

  3. Cabinet Assembly and Door Installation

    • Glue the door panel into place.
    • Sand and varnish the door edges.
    • Create and attach a handle to the door using a router and chisel.
    • Attach hinges to the door and cabinet.
    Attach hinges to the door and cabinet.Attach hinges to the door and cabinet.Attach hinges to the door and cabinet.Attach hinges to the door and cabinet.
    Cabinet Assembly and Door Installation

  4. Back Panel Installation and Outlet Setup

    • Cut out a section of the divider for the waste track.
    • Cut an opening in the back panel for the electrical outlet.
    • Glue the back panel into the cabinet.
    Glue the back panel into the cabinet.Glue the back panel into the cabinet.Glue the back panel into the cabinet.
    Back Panel Installation and Outlet Setup

  5. Final Installation and Finishing Touches

    • Glue the mirror to the door.
    • Install the cabinet into the bathroom using stainless steel screws and a diamond drill bit for the tiles.
    Install the cabinet into the bathroom using stainless steel screws and a diamond drill bit for the tiles.Install the cabinet into the bathroom using stainless steel screws and a diamond drill bit for the tiles.
    Final Installation and Finishing Touches

  6. Vanity and Sink Installation (External)

    • Install the vanity and sink (steps not detailed).
    Install the vanity and sink (steps not detailed).Install the vanity and sink (steps not detailed).
    Vanity and Sink Installation (External)

Read more: DIY Mason Jar Soap Dispensers: A Step-by-Step Guide with Two Stunning Designs

Tips

  • Use TPS to remove stubborn adhesive from mirrors.
  • Spline joints offer excellent strength.
  • A simple jig can greatly assist in cutting dadoes.
  • Use a flap sander for efficient inside corner sanding.
  • Consider pearl-escent paint for a unique finish.

Common Mistakes to Avoid

1. Incorrect Measurement and Cutting

Reason: Improper measurements of the mirror and cabinet frame lead to ill-fitting components and a visually unappealing final product.
Solution: Double-check all measurements multiple times before cutting and use precise tools for accurate cuts.

2. Poorly Secured Hinges and Door Alignment

Reason: Weakly attached hinges or improperly aligned doors result in a wobbly, unstable cabinet that may even become unsafe over time.
Solution: Use strong hinges, pilot holes for screws, and adjust hinges carefully to ensure the door opens and closes smoothly.

FAQs

What tools and materials will I need to build a DIY mirror cabinet?
You'll need basic woodworking tools like a saw, drill, screwdriver, and measuring tape. Materials include plywood or MDF for the cabinet body, mirror, hinges, cabinet knobs or handles, wood glue, screws, and wood finish (paint, stain, or varnish).
How do I ensure the mirror is securely attached and doesn't break?
Use a strong adhesive specifically designed for mirrors and heavy objects. Apply it evenly to the back of the mirror and press firmly against the cabinet backing. Use additional support like mirror clips or brackets for extra security, especially for larger mirrors.
Can I add extra features like lighting or shelves to my DIY mirror cabinet?
Absolutely! Adding LED strip lighting inside the cabinet provides great illumination. You can also incorporate shelves using additional pieces of plywood or MDF, ensuring they are securely fastened to the cabinet's structure. Plan this during the design phase.