The Crafty Catsman
DIY Hidden Bookcase Door Back with rustic wood finish showing a beautiful weathered look

DIY Hidden Bookcase Door Back – The Mullet Door

If you follow this website, you already know—I am a dad. That means my SEO search rankings might take a hit because I prioritize dad jokes over keywords. But here you are, and that's what really matters. Hidden bookcase doors are undeniably cool. Most DIYers stop after completing the front, leaving the back looking unfinished. This guide is dedicated to making the back of your hidden bookcase door just as impressive as the front.

Plain door back before the rustic transformation

Project Overview

Difficulty Level: Intermediate

Time Required: 1-2 days

Note: This guide assumes you already have a hidden bookcase door installed. It focuses only on finishing the back side with a rustic design.

Already Have a Hidden Bookcase Door?

Let\'s be clear, traveler—this guide is specifically for finishing the back of the bookcase door. It assumes that you have already installed a hidden bookcase door, whether you built one yourself or purchased a pre-made option like a Murphy Door.

Don\'t have a secret door yet? No worries! Check out our full guide on how to build a hidden bookcase door first.

📖Haven\'t Built the Door Yet? Click Here for the Full Guide

The Finished Result: Bookcase in Front, Party in Back!

Completed rustic bookcase door back

The completed project completely transforms the space, creating a rustic, speakeasy feel to my arcade/bar area. From a plain, unfinished bookcase back to a seamless rustic wall that perfectly conceals the hidden door—the transformation is remarkable.

What makes this project special is the attention to those final details. The dark switch plate, painted gaps, corrugated ceiling, and strategic lighting all come together to create a cohesive, authentic look.

Now when guests enter my home, they have no idea there\'s a secret room waiting to be discovered. And when they do find it, the reveal is even more impressive because both sides of the door are thoughtfully designed.

Final result with door open showing both sides of the hidden bookcase door

The Big Reveal

When the door swings open, guests are surprised by both the hidden room and the seamless rustic design.

Tips for Success

1

Weight Matters

Keep your materials lightweight to avoid straining the door hinges. Pine boards are perfect for this reason—decorative but not too heavy.

2

Integrate with Surroundings

Extend the same design to the adjacent wall for a seamless look when the door is closed. This is key to maintaining the "secret" aspect.

3

Embrace Imperfections

With rustic design, imperfections add character. Don\'t worry about small gaps or uneven edges—they contribute to the authentic aged look.

Share Your Project!

Have you built a hidden bookcase door or planning to create one? I\'d love to see your project or answer any questions you have!

Tag me on Instagram @thecraftycatsman or email your photos to TheCraftyCatsman@gmail.com

Tools You'll Need

Installation in progress showing the tools used

Nail Gun

For attaching the reclaimed wood boards to the back of the door

Measuring and planning the layout of boards

Measuring Tape

To ensure proper fit and alignment of the wood boards

Wood boards that may need cutting to size

Saw

For cutting the reclaimed wood to proper length if needed

Materials Needed

Weathered pine boards ready for installation

Weathered Wood Boards

Naturally weathered 1x8x8 pine boards are ideal as they're lightweight and won't strain the door hinges

Installation process showing where glue is used

Wood Glue

For securing the boards to the door back before nailing

Installation process showing nail usage

Finishing Nails

To permanently attach the boards to the door back

Final result showing dark hardware details

Dark Switch Plate

Replace white switch plates with dark ones for a cohesive rustic look

Step-by-Step Instructions

Sample of reclaimed wood finds from Facebook Marketplace

1Find Your Style and Materials

Facebook Marketplace is an excellent source for affordable reclaimed wood. I purchased a collection of weathered wood for just $40, which included everything from 100-year-old hand-hewn boards to reclaimed bookcase wood.

I specifically chose naturally weathered 1x8x8 pine boards because they were lightweight, reducing unnecessary stress on the Tambee pivot door hinges—which are key for smooth operation.

Don't want to wait for the perfect marketplace find? You can also artificially weather new wood using techniques from our weathering guide.

Planning the layout of weathered wood boards for the door back

2Plan Your Board Layout

My hidden bookcase door required three 1x8x8 pine boards. I was thrilled when the dry-fitted boards fit almost perfectly flush with the edges of the bookcase frame.

Take time to arrange your boards in different patterns to find the most visually appealing layout. This isn't a complicated project, but planning your board arrangement makes a huge difference in the final result.

Consider these key factors:

- Lay the boards down first to visualize the pattern

- Find the most visually appealing arrangement

- Ensure boards align flush with door edges

- Account for the weight of your materials

Installation in progress showing boards being attached to door back

3Installation Process

Once you've decided on your board layout, the installation process is straightforward:

1. Measure and cut your boards to the appropriate length if needed

2. Apply wood glue to the back of each board

3. Position the board on the bookcase door back

4. Secure with finishing nails using your nail gun

5. Repeat for all boards, ensuring tight, clean seams

Remember that adding too much weight to your bookcase door can strain the hinges and affect operation. This is why lightweight weathered pine is ideal.

Wall integration showing how the door blends with surrounding wall

4Wall Integration

For a truly seamless look, I continued the same rustic wood style on the adjacent wall. This creates the illusion that the door is simply part of the wall when closed.

The key to successful integration is ensuring the patterns, board heights, and spacing match up as closely as possible. Small gaps and imperfections are actually beneficial in this rustic style, adding to the authentic look.

Final result showing the completed rustic door back with all finishing touches

5Final Touches

The magic is in the final details that transform your project from good to amazing:

- Replace white wall switches with dark covers

- Paint gaps between boards dark gray for depth

- Add a corrugated metal ceiling for an authentic rustic look

- Install Govee RGB patio lights to fix uneven lighting (voice-controlled for convenience)

These finishing touches are what elevate the hidden door from a simple project to a showstopper.

Related Projects

Ready to Create Your Own Hidden Door?

Start with our complete guide to building the bookcase front, then return here to finish the back for a truly professional result.
See Full Bookcase Door Guide