Porcelain tiles are very hard wearing and a great choice for kitchens where they are likely to see a large amount of foot traffic, you do need to be careful however if they are the micro porous porcelain which as the name suggests are slightly porous and can trap dirt and become difficult to clean. The other problem you are likely to have with any tiled floor is the grout which has a porous top layer that can become stained.
This was the case with the kitchen floor tiles at this house in Glasgow where you can see from the photograph below the improvement in the centre of the floor where we had test cleaned the tiles; the grout used was dark in colour which hides the dirt so unfortunately you cannot tell from the photograph the improvement in the grout.
Deep Cleaning Porcelain Tile and Grout
To get the tile and grout really clean a strong dilution of Tile Doctor Pro-Clean was applied and left to soak in to the surface for around ten minutes before scrubbing it into the tile with a bonnet machine fitted with a black scrubbing pad and also a stiff hand brush along the grout lines. This was then rinsed away with warm water all of which was removed by a wet Vacuum. This whole process was repeated three times until we were satisfied that the tile and the grout was looking new again after which the floor was given a final wash with Tile Doctor Neutral Cleaner and then dried as much as possible using the wet vacuum.