Builder Sand

Building Sand is a general-purpose silica sand used for mostly bricklaying and some types of mortar. The sand can be identified by it’s even, and small grittiness of aggregate in the clay mix.

Normally used where more flexibility and smoothness in application are required.
Depending on the local pit can be yellow, orange, brown or red. On a microscopic level the grains are well rounded.

Building sand tends to have a higher percentage of contamination of sand/silt than render sand.