Note 1: The result is for one layer.
Note 2: Actual results may vary by a few percent as consumption is affected by other factors too.
The area of a wall is obtained by multiplying its length (if there are several walls, the sum of their lengths) by its height. If there are areas on the wall where the putty will not be used (doors, windows, etc.), these areas are subtracted from the total area of the wall.