Short definition
The leftover piece of carpet, vinyl or other flooring material after cutting to fit a room — sometimes reusable in another part of the same job.
An offcut is the piece of flooring material left over after cutting a roll, plank or tile to fit a room. The term comes up most in carpet and vinyl work because both are sold from a continuous roll: every cut to length leaves a strip behind, and that strip is the offcut.
Offcuts split into two categories on a real job: reusable and scrap. A reusable offcut is large enough to cover a smaller room or hidden area on the same job — a 1.2 m strip left after cutting a 3.8 m bedroom from a 5 m drop can land in a wardrobe or a small landing. A scrap offcut is too small or oddly shaped to use and ends up in the offcut bin.
The reusable case is why multi-room cut planning matters. Treating each room independently produces more total wastage than treating the job as a single cut sequence off one roll, because reusable offcuts can roll into the next room. The carpet cut list calculator at /calculators/carpet-cut-list runs the per-room maths; the on-site decision about which offcuts to reuse stays with the installer, but a tighter plan starts with a smaller total order.
In AreaSum, the wastage percentage you set per material already builds in an allowance for unrecoverable offcuts. The exported quote shows the raw area and the area-with-wastage side by side so the customer sees the maths and the supplier order matches the floor.
Quote from a flooring estimator
"I am going to use the waste from room one and I am going to put that in room two." Reusable offcuts are why multi-room cut planning beats per-room ordering on the total.