Raising a floor cabinet is a fundamental skill in both professional contracting and ambitious DIY projects. This process establishes the foundational level for your entire kitchen or bathroom layout, ensuring that countertops, appliances, and other elements align perfectly. Achieving a perfectly plumb and level installation requires more than just setting the cabinet on the ground and hoping for the best; it demands a systematic approach to elevation and stabilization.
Understanding the Purpose of a Raised Cabinet
The primary reason for lifting a floor cabinet off the ground is to create a stable, even surface for the countertop. If the subfloor is uneven or sloped, placing the cabinet directly down would result in a wobbly structure and a difficult installation. By shimming the cabinet up to the desired height, you ensure that the bottom shelf sits uniformly, allowing the countertop to sit flush. Additionally, raising the cabinet provides a vital moisture barrier, protecting the wood or MDF from potential water damage from spills or cleaning in bathrooms.
Tools and Materials Required
Before beginning the installation, gathering the right tools is essential for efficiency and accuracy. You will need a reliable level (both torpedo and long board levels), shims (preferably plastic or cedar), a cordless drill, a utility knife, and a measuring tape. Safety gear such as gloves and safety glasses is also recommended. Having a helper on hand is beneficial, as floor cabinets are heavy and awkward to maneuver into place without assistance.
Step-by-Step Installation Process
The execution of raising a floor cabinet follows a logical sequence to ensure precision. Starting with a clean and clear floor area, you will measure and mark the intended height based on your cabinet design plans. The process involves positioning the cabinet, checking for level, and strategically placing shims until the structure is solid and secure.
Positioning and Initial Placement
Begin by sliding the cabinet into its designated location, aligning it with the layout lines on the floor. Do not rely solely on the walls of the room for alignment; use your measurements from the countertop or appliance locations. Once roughly in place, check the front-to-back and side-to-side squareness. It is much easier to adjust the position slightly now before the weight settles and the shims lock it in place.
Applying Shims and Achieving Level
This is the critical phase where the actual raising occurs. Slide thin shims underneath the cabinet feet or the bottom plate, focusing on the lowest points identified during your initial measurement. As you add shims, consistently check the level across the entire cabinet frame—checking both side-to-side and front-to-back plumb. The goal is to achieve a state where no rocking motion exists, indicating a stable base.
Securing and Finalizing the Installation
Once the cabinet is level and stable, the shims must be secured to prevent shifting. Many professionals recommend carefully lifting the cabinet slightly and inserting glue or construction adhesive under the shims before gently settling the weight back down. This adhesive bond prevents the shims from working loose over time. For permanent installations, the cabinet should then be securely fastened to the adjacent wall studs using appropriate screws driven through the back panel.
Verification and Next Steps
After the adhesive has set and the cabinet is fixed to the wall, a final verification of level and alignment is necessary. You should inspect the joints for any gaps and ensure that the cabinet face is perfectly aligned with any adjacent cabinets or walls. With the floor cabinet now raised and secured, you are ready to proceed with installing the countertop or connecting the unit to any plumbing or electrical fixtures, confident that the base is firm and accurate.
