How to Install Cabinet Spacers: A Step-by-Step Guide for Perfectly Aligned Cabinets


Hey there, Reader! Are you ready to take on a new DIY project and transform your kitchen? One crucial step in achieving perfectly aligned and level cabinets is installing cabinet spacers. Whether you’re a seasoned DIY enthusiast or a newbie looking to upgrade your home, this comprehensive guide will walk you through the process of installing cabinet spacers like a pro. So, put on your handyman hat and let’s get started!

how to install cabinet spacers

Cabinet spacers, also known as cabinet shims, are small wedges or strips that help balance and adjust the positioning of cabinets. They are essential to ensure your cabinets are level, plumb, and properly aligned with each other. By installing cabinet spacers correctly, you’ll not only achieve a polished and professional look but also ensure the long-term durability and functionality of your cabinets.

1. Preparation: Gathering Your Tools and Materials


Before you start installing cabinet spacers, make sure you have the necessary tools at hand:

  1. Pencil or marker
  2. Tape measure
  3. Level
  4. Screwdriver (preferably electric)
  5. Hammer
  6. Utility knife


Here are the materials you’ll need:

  1. Cabinet spacers or shims (available at your local hardware store)
  2. Carpenter’s glue
  3. Wood screws
  4. Finishing nails
  5. Wood putty

With your tools and materials ready, let’s move on to the actual installation process!

2. Leveling Your Cabinets: Step-by-Step Guide

Step 1: Preparing the Cabinet Layout

Start by measuring the height and width of your cabinets and marking the layout on the wall using a pencil or marker. This will help you visualize the placement of each cabinet and determine the precise locations for installing the spacers.

Using a level, draw horizontal and vertical lines on the wall as references for the cabinet placement. These lines will serve as your guide throughout the installation process.

Step 2: Installing the Base Cabinets

Begin by installing the base cabinets first. Carefully position the cabinets along the reference lines, ensuring they are flush against the wall and each other. Use wood screws to secure the cabinets to the wall studs.

Once the base cabinets are firmly attached, check their levelness using a level. Adjust the cabinets by inserting cabinet spacers under them as needed to ensure they are perfectly level in all directions.

Step 3: Aligning the Upper Cabinets

Next, it’s time to install the upper cabinets. Place the upper cabinets on top of the base cabinets, aligning them with the reference lines. Use a level to ensure the upper cabinets are level horizontally and vertically.

Insert cabinet spacers between the upper and lower cabinets to create an even and seamless alignment. Secure the upper cabinets to the wall studs with wood screws.

Step 4: Checking Alignment and Adjusting

Once all the cabinets are installed, check the alignment and adjust as necessary. This is where the cabinet spacers come in handy. If a cabinet appears slightly off, gently tap the shim into the gap between the wall and cabinet to bring it into alignment.

Continue checking the levelness and alignment of each cabinet, making sure they are plumb and seamless. Use a level to confirm that the cabinets are straight both vertically and horizontally.

3. Finishing Touches: Sealing and Concealing Gaps

Step 1: Filling Gaps with Wood Putty

After installing the cabinet spacers and adjusting the cabinets to achieve a flawless alignment, there may be small gaps or spaces visible. To ensure a polished finish, fill these gaps with wood putty. Apply the putty using a putty knife, smoothing it out until it blends seamlessly with the cabinet surfaces.

Step 2: Securing Cabinets with Finishing Nails

To provide additional stability and support to your cabinets, use finishing nails to secure them further. Carefully nail through the cabinet frames into the spacers or adjacent cabinets, ensuring a tight and secure connection.


Congratulations, Reader! You’ve successfully installed cabinet spacers and achieved perfectly aligned cabinets. By following this step-by-step guide, you’ve not only elevated the aesthetics of your kitchen but also improved its functionality and durability.

If you found this article helpful, make sure to check out our other DIY guides and home improvement tips. From redesigning your living space to creating an inviting outdoor oasis, we’ve got all the inspiration and guidance you need to transform your home into a haven of comfort and style. Happy DIY-ing!

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