We were asked to sort out these beautiful “Moroccan Leather” Limestone floor tiles in the kitchen and WC of a house in Salisbury which had had been badly installed by the contractor. If you look closely at the photographs you can see grout residue (also known as Grout Haze) had been left on the surface of the tile ruining its appearance.
Removing Grout Haze
The most effective way to remove grout from the tile surface is with an acidic product such as Tile Doctor Grout Clean-up, you have to be careful not to leave it on the surface too long and wash the floor down with water afterwards as acids can eat through natural stone.
Cleaning and Sealing Limestone Tiles
Once the grout haze was removed we set about giving the tiles a good clean using Tile Doctor Pro-Clean washing it down again with clean water before giving it a polish using a Green polishing pad to get a high shine finish.
There are a numbers of sealers you can use on Limestone each one can give a different effect, in this case we used two coats of Tile Doctor Colour Grow which really enhances the natural colours in the stone.
The floor was completely transformed and think you will agree now looks amazing
Source: Grout Haze Removal in Sailsbury