I find it easiest to install the upper cabinets firstno base cabinets in the way. The point of fitting cabinets to walls is to make them part of the structure, to fit in and be integral. Honest to God, I have never touched a level in installing them, and I have never had a call back to fix them because the granite guy installed level on top of me and showed an uneven margin at the top of my face frame. For uneven walls, clamp the filler strip to the frame.
Fitting kitchen wall cabinets to uneven wall. The base units were gone as I was able to scribe them to the wall and even up the gap end-to-end, but wall units do not have the same provision for footing to uneven surfaces that base units do. By cutting the side panel in such a way, I managed to ‘hide’ the gap, whilst making the overall look uniform. 01:00 Uneven Floors and Walls 01:10 Re-leveling 01:36 Expansion and Contraction Issues 02:20 Sink Base Installed With Others 03:00 Cabinet Specific Tools. Some floors and walls have uneven spots that will affect the installation.
Uneven floors and walls: Because some floors and walls have uneven spots which affect the installation, it will be necessary to locate these uneven areas and shim or scribe cabinets in order to make the installation plumb, true and square.