How to Build a Soffit Above Your Kitchen Cabinets

Measure the Soffit

Determine your desired soffit length, width, and height with a measuring tape. To figure out the width and depth, measure forward from the wall behind the cabinets. While you can build a soffit to match the depth of your cabinets, this option makes the job more tricky. Consider leaving some room for recessed lighting or trim, and extend the soffit another few inches.

Measure from the top of the cabinet to the ceiling to calculate the height and then measure from the end of your cabinets to the wall to determine the length. Write down the cabinet measurements and double check your work to ensure the numbers are correct.

Build the Soffit Frame

Attach ceiling and wall plates into the studs using a nail gun. Cut 2” by 4” lumber into four boards with a miter saw according to your length, width, and height measurements. Attach the four pieces together using studs to create a box frame. Check that the frame is sturdy and level.

Then, add cross supports every foot or so for stability and to help install the drywall (more on this in step four). Measure the space between the horizontal sides of the frame and cut boards to fit in this space. Nail them in the box frame with studs.

Install the Frame

Position the frame in the designated area and double check that the frame aligns with your original measurements and is level with the ceiling and walls. Then, use a nail gun to install the frame onto the ceiling and wall plates. You’ll need another person to hold the frame steady as you attach it to these anchors. Check that the frame is securely attached and use a level to ensure the frame is level with the ceiling and walls.

Cover the Frame With Drywall

Photo: Ursula Page / Adobe Stock

Cut out drywall according to your measurements to cover the frame with a utility knife. Install the drywall pieces onto the frame one side at a time using two-inch drywall screws.

Look for any gaps or seams between the drywall. Using a careful hand and a taping knife or mudding knife, apply mud thoroughly in the gaps or along the seams. Then, tape the inside corners of your soffit, pressing out excess mud using your taping or mudding knife. Leave overnight to dry.

Add Corner Bead

Measure and cut the metal inside the paper-faced corner bead. This step will give the soffit extra support, protect the corners, and give the drywall a nice, defined edge.

To install a corner bead, apply a joint compound mixture and water to the wall edges. Adhere the corner bead along the edges by pressing it against the wall’s edge with your fingers. Then, use your mudding knife to smooth and remove excess compound.

Paint or Finish Soffit

Once your spackle dries, it’s time to sand, prime, and paint your soffit. Sand the soffit with fine-grit sandpaper (#100 to #120) or use a small orbital sander. Wipe away the dust with a cloth. Then, add a coat of primer to the soffit. Wait for the primer to completely dry before painting. Use rollers and paint brushes to add a coat of paint to the soffit. Wait for the first coat to dry before adding a second.

Consider painting the soffit the same color as your cabinets to make your ceilings appear taller. If you’d rather add more dimension to the ceiling, paint the soffit the same color as the ceiling.