As the name implies red building sand is naturally red-coloured sand that is collected and used for construction purposes. The sand is fine and usually makes smooth mortar mixes. This sand is finer than any other building material and therefore produces a smoother consistency. This smooth mixture makes for fitting building material.
River sand is a loose, fragmented natural material that is made up of small particles of decomposed shells, corals or rocks. This material is important in the construction industry. In the construction industry river sand is one of the most required materials forthe construction process. It has many properties that make it undoubtedly useful.