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Cleaning Victorian Tiles
The tiles were quite dirty and in need of a deep clean so a 50/50 mix of Tile Doctor Pro-Clean and NanoTech UltraClean was diluted with water and left to soak into the tiles for around 15 minutes before being scrubbed into the Victorian tile and grout using a slow speed rotary machine fitted with a scrubbing pad. The dirty solution was removed and the process repeated and grout lines scrubbed until I was happy the tiles were clean; this was then followed with a thorough rinse with water and a wet vacuum was used to remove the fluids and get the tile and grout as dry as possible. We have a special fan to accelerate the drying process so this switched on and moved around the floor until it was dry.
Sealing Victorian floor tiles
Once the floor was dry we started to seal it using Tile Doctor High Shine sealer which provides stain protection as well as a very shiny finish, hopefully you can appreciate the difference in the photographs on this page.
Source: Expert Victorian Maintenance site