This guide will teach you how to install base cabinets following these steps. The uneven wall due to many causes can require shimming to allow for solid fastening at the screw to wall points. Not necessary in the manner the cabinets were installed. When I installed my kitchen base cabinets, I nailed the shims into the floor then placed the cabinets on top. However, I can’t do this in the bathroom because the floor is tiled.
The first wall and base cabinets are key-if you get them installed level from back to front and side to side, the other cabinets should follow suit. Screw through backs of cabinets and shims into wall studs. After you have hung your wall cabinets and installed the corner base cabinet, you can finish your cabinet installation. You may need to place shims under the front or exposed side of the cabinet and between the back of the cabinet and the wall. Base cabinets really offer several benefits: deep inner storage for large items; drawers for fasteners, hardware, or other small tools; and, of course, a convenient flat work surface. Position the cabinet and shim it as needed until it is level, plumb, and touches the reference line (see step 2).
If you get too tall at the DW you can always put a header over the opening but you can’t let it go too low. So at each cabinet I screw on pads to the bottom of the toe base that leave enough room for a shim, what ever that may be. These tips on how to install cabinets should overcome most of them. Shim cabinets off the floor or away from the wall to bring them to level. This video shows you how to level kitchen cabinets using shims. Warning: Shims are NOT A SAFE FOUNDATION for kitchen cabinets, but if you must.
How To Install Kitchen Cabinets