For illustrative purposes, the diagram on the left shows how to calculate the square meterage of a room with various obstructions and/or recesses. Here, for example, we have the typical living room layout in a standard Victorian terraced house, with both a chimney breast and bay window to accommodate. Follow the simple steps below, referring to the diagram, to effectively calculate your area. All you need is a tape measure, and something on which to note your measurements.

  1. Measure the Length and Width of the rectangular main space (D), disregarding the recesses. Multiply the Length by the Width, and you have the area. In this case, 4m x 2.6m = 10.4m2
  2. Measure seperately, in the same way (Length x Width) the recesses either side of the chimney breast (B&C), and add these sums together. In this case, 1.2m x 0.4 = 0.48m2 x 2 = 0.96m2
  3. Measure the area of the bay window (A) as if it were simply another rectangle (Length x Width). In this case, 1.8m x 0.6m = 1.08m2
  4. Finally, add up all three area totals (A+B&C+D). In this case, 1.08 + 0.96 + 10.4 = 12.44m2. This is your total floor space. 

* Always add 10% for cutting and fitting. In this example, then, the grand total is 12.44 + 10% (1.24) = 13.68m2

* Round up to the nearest square meter.

You would therefore require 14m2 worth of Original Floorboard, in the finish of your choice, for this room.