Step 7 - Clean Stone

The vibrating roller is pushed over the area that has been grouted. A minimum of 3 passes with the vibrating roller is advised.

When the mortar is vibrated into the joints it fully fills the joint. This reduces the risk associated with partially filled joints.

Excess air and water is vibrated out of the mortar material.

After waiting 30 minutes for the mortar to slightly cure, the continuous sponge cleaning machine is pushed over the area that has been grouted. The number of passes will be determined by the cleanliness of the surface of the stone elements.

The continuous sponge lifts the excess mortar and water from the surface of the stone elements, and deposits this in a water basin in the machine. The water basins are changed throughout the cleaning process to allow the excess mortar to settle in the basins. Water can be filtered and reused. Any excess mortar can be removed for off site disposal. This reduces the risk associated with contamination of drains and iron work covers by mortar.

The continuous sponge also finishes the profile of the joint surfaces whilst it is cleaning. This produces a regular and repeatable finish to the surface of the joints - there is no requirement to subsequently profile the surface of the joints - this allows installers to be far more productive.