Originally Posted by
Mark Bolton
Our default on about any cabinet install was to simply lay out the uppers on the wall with snapped lines, cut the sheetrock back, and install a 6 or 8" strip of either 1/2" or 5/8" ply horizontally screwed to the studs to give continuous fastening. Its not actually that much work and it allows you to fasten every single cabinet as needed. We always ran 90% new construction or fully gutted remodels so we always installed a 2x6 let-in to the studs horizontally at the upper and lower cab fastener locations.
Im not a fan of hanging rails unless your walls are straight as an arrow which is extremely rare.