Works out how many cases of flooring a room needs. Flooring is usually sold by the case, each covering about one tsubo. The size in tatami mats and in tsubo is shown as well, to give a sense of the room.
Flooring is usually sold by the case, each covering about one tsubo. This works out how many cases a room needs.
Part cases cannot be bought, so the figure is rounded up.
The area is also given in tatami mats and in tsubo. A mat is taken as 1.62 m², the lower limit used in property advertising, and a tsubo is exactly m². Two mats make one tsubo.
A room of 3.6 by 2.7 m is 9.72 m², six mats, or 2.94 tsubo. Allowing 10% brings it to 10.69 m², and at 3.3 m² a case that is , rounded up to 4 cases. Without the allowance three would do, so that single extra case is a noticeable step.
Rooms with many cut-outs, boards laid diagonally, or a pattern that has to line up all waste more. A plain rectangular room laid parallel needs 5 to 10%; a complicated one nearer 15%.
The area per case varies by product. Around 3.3 m², one tsubo, is common, but half-tsubo cases of 1.65 m² exist. Check what the product actually states.