Baseboard take-off — room perimeter minus the door openings
Trim take-off starts from the perimeter 2×(L+W). Baseboard = perimeter − door widths; crown stays the full perimeter (no door deduction). A 14×12 room with one 32″ door = 52 LF perimeter, 49.33 LF base run.
What this diagram shows
A top-down plan of a 14 by 12 foot room shows how the baseboard linear footage is figured. The room perimeter is 2 times length plus width, which is 2 times (14 plus 12) equals 52 linear feet. Baseboard does not cross a door, so the base run subtracts the door width: 52 minus 2.67 feet for one 32-inch door equals 49.33 linear feet. Crown moulding gets no door deduction because it runs continuously along the ceiling, staying at the full 52 linear feet, and casing wraps each window or door opening with a quarter-inch reveal held off the jamb.
Trim & Baseboards Calculator
Calculate baseboard, crown, casing & shoe in linear feet, sticks, fasteners & caulk — plus crown miter angles. WMMPA WM-LWM profiles. Free.
Related diagrams
Doors, Windows & TrimWindow flashing order — sill pan, jambs, head, then WRB, lapped to shed water
Doors, Windows & TrimInsert vs. full-frame window replacement compared
Doors, Windows & TrimWindow code rules — bedroom egress (R310) and safety glazing (R308)
Doors, Windows & TrimGarage-door clearances — headroom, backroom, and side room around the opening
Doors, Windows & TrimTorsion vs. extension garage-door springs — and the required safety cable
Doors, Windows & TrimGarage-door section construction — single, double, and triple layer R-values