Cleaning Victorian Tiles
To get rid of paint and dirt I decided to go straight for a dilution of Tile Doctor Remove and Go which was left to soak into the tiles for around thirty minutes before scrubbing it in with a rotary machine fitted with a scrubbing pad. The dirty solution was rinsed away with water and sucked with a wet vacuum and stubborn areas and grout re-treated with a scrubbing brush by hand.
I wasn't entirely happy with the condition of the tiles at this point so the next procedure was to scrub in a dilution of Tile Doctor Grout Clean-Up which is an acid based product that effectively removes grout haze, mineral deposits, rust stains and efflorescence. This did the trick but being an acid based product you can't leave it on the tiles for too long and so was washed off soon after and the tiles washed down with tap water.
I scraped out the grout surrounding the damaged tiles and lifted them out, I had already arranged replacements so once that was done and tidied up it was just a question of putting the replacement in place with tile adhesive and re-grouting using a sympathetic grout colour to match the aged existing grout.
My work was done for the day so I left a couple of fans running to help dry the floor and left for the day.
Sealing Victorian floor tiles
I came back the following day to seal the floor using Tile Doctor High Shine sealer which offers stain protection as well as a very shiny finish; five coats were needed to get it fully sealed.