"reveal base". It is something that we think of as coming out of NYC art galleries, but that might not be anything more than an "urban design legend"... Anyway, the easiest way to make these may be to use aluminum reveal base profiles such as those made by companies like Fry Reglet or Pittcon. You will find them on line. Another possibility would be to cap the bottom of the drywall with "J-metal" and cut a strip of gray plastic laminate (ie Formica) to glue onto the face of the studs underneath - that works too.
WIDE BASEBOARD
trim around the door
how many inches of trim on overhang
WINDOW TRIM
TRIM AROUND STAIRCASE
CLOSET AND WALL NEXT TO IT TRIM
WINDOWS TRIM
This base was a painted wood base, 8 inches tall and installed flush with the wall with a 1/2" reveal between the base and drywalL
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