How I proceed all depends on cost really and what kind of results I can expect from doing it myself or having it done professionally?
When I brought the house the tiles were mainly covered just in dirt from over the years. I had a couple of the downstairs floors concreted but some of the cement (annoyingly) spilled onto the tiled floor when the builders were wheeling it in and although it was washed off there is now a thin cement residue left on there also. There is also a small patch which looks a little like oil has been spilled? There are a couple of slightly loose tiles but nothing really that serious.
I am based in Stoke-on-Trent. How much would I be looking at to pay for products to do it myself? And how much would I be looking at to pay to have the work done professionally?
Doing it yourself is without doubt the cheapest method provided you have the time, patience and the products. However when you take into account that you probably dont have the necessary tools there are only three avenues really, buy or rent the tools or do it all by hand and thats back to time. Because you have loose tiles and heavy contaminants I would get a Pro in to do it. However, I am bound to say that because its what I do. I could not give you a price without coming to see it and doing some tests. If you go down the DIY route ideally you will need a Rotary Floor Scrubber with Drive Board, Rotary Brush and a selection of emulsifying pads, A Wet Vac, A Hand Machine, then the products I would advise would be Sealing & Coating remover, Phosphoric Acid, Heavy Duty
Tile & Grout cleaner, Extreme, and Nanoscrub all products made by Aqua Mix. Adhesive to refix the tiles and grout. Then finally a Sealer. Floors like this are a lot of work but the results are usually fantastic and well worth it.
If you e mail me or pm me with your details I will e mail you some before and after pics