- Operate in 10m2 sections to ensure greater control over the finished result.
- Sweep floor to remove all loose debris.
- Saturate the grout joints with water.
- Dilute phosphoric acid cleaner with warm to hot water, according to chemical manufacturer’s instructions and apply solution to the floor to be cleaned. Allow solution to work on the tiles for 5-6 minutes to break down excess grout, dirt and grease on the tile surface.
Do not allow the solution to dry – add more water if necessary.
- Scrub tiles with a brush or mechanical scrubbing machine (ensure the suction facility is switched off) to lift the dirt.
- Remove dirt with a wet vacuum cleaner or scrubbing machine (suction facility switched on).
- Re pass again with cleaning solution if necessary.
- Finally, before allowing the area to dry, rinse thoroughly several times, with cold clean water, agitating with the scrubbing brush or with the scrubbing machine (ensure the suction facility is switched off) to ensure complete removal before using a wet-vac to remove excess water from the surface.
NOTE: If the surface is inadequately rinsed or dried before rinsing, an off white deposit or precipitate may be left on the tile which will become more difficult to remove than the original deposit.
- Dilute cleaning detergent in warm water according to the chemical manufacturer’s instructions for high concentrations, and then apply the solution using a mechanical scrubbing machine (ensure the suction facility is switched off) or manually with a heavy scrubbing brush. The water/detergent mixture must be allowed to remain on the floor for sufficient time (5-15 minutes) to allow it to penetrate and emulsify the dirt. It is important that the cleaning detergent is completely removed by a final rinsing with clean water. Remove excess water from the surface with a wet-vac or mechanical scrubbing machine (ensure the drying facility is switched on) as it is the rinsing process that removes the dirt.
- Repeat procedure (9) weekly or as required to prevent soil build up on the tiles.
- Dilute cleaning detergent in warm water according to chemical manufacturer’s instructions for lower concentration, and apply the solution using a mechanical scrubbing machine or manually with a clean mop and bucket. It is important that the cleaning detergent is completely removed either by a final rinsing with clean water or by the squeegee vacuum action of a mechanical cleaner.
- Spillage of oil, fat or material likely to stain or cause a slipping hazard should be removed immediately by using detergent and hot water, followed by rinsing with clean water.