First of all, it is necessary to know the size of the surface to be paved or covered, to which the percentage of wastage must be added, around 10% for floors and 15% for coverings, i.e. the waste resulting from cutting or drilling required during the laying phase or for any future repairs.
The quantity should be decided at the time of ordering because in the event of a subsequent order, there may not be the same product with the same shade.
An insufficient number of ordered tiles could turn into a serious problem!