Hello Building construction experts.
What are the materials required for outside wall tiling? Rain will beat the tiles.
I pulled up an old quote, but I don't recall if other materials were used in addition to the ones listed below?

Area to cover 30 sqm.

1. Wall Tiles N1,400 per square meter.
N1,400 * 30 = 42,000k.

2. Black cement N2,500 * 6 bags = 15,000.

3 . Sapro gum N3,000 * 3 bags = 9,000.

workmanship: 9,000

Total 75,000

Are there other materials needed?