Resilient / LVP Flooring Takeoff
Boxes of plank or tile to order at the waste allowance for the install pattern (straight / diagonal / herringbone).
Example
You enter
- Room length (ft) 15
- Room width (ft) 12
- Coverage per box (sq ft) 20
- Install pattern straight
- Plank width (in, optional) 7.5
You get
- Boxes 10
- Full rows 19
- Start width 4.5
Details, formula, and sources
With the last-row balance that tells you whether to rip the first course. On a floating floor the rows do not divide into the raw room width: the perimeter expansion gap comes off BOTH walls, so entering it is what makes the last-row answer the real one. A 12 ft room in 7.5 in plank divides into 19 full rows either way, but the leftover is 1.5 in ignoring the gap and 1.0 in with a quarter-inch gap at each wall -- both slivers, both calling for the same fix: rip the first and last row to a matching width so neither edge looks like an accident.
Boxes = ceil(area x (1 + pattern waste) / box coverage); usable width = room width - 2 x perimeter expansion gap; last row from full_rows = floor(usable width / plank), rip the first and last row to (remainder + plank) / 2 if the remainder is under a third of a plank.
Published flooring waste rules of thumb and the standard last-row balancing rule.
First-principles; flooring-maker layout guides free at maker pages.
Estimate. AHJ and licensed professional govern.
Field names used by the API: room_length_ft, room_width_ft, box_coverage_sqft, pattern, plank_width_in, boxes, full_rows, start_width
- Pattern waste ~10% straight / 15% diagonal / 17% herringbone (editable)flooring-install practice