Hi,
I've started doing this work commercially having set out a year ago to just focus o geometric victorian halls and paths. What I find works best is to use the Aqua-mix range of problem solvers. See
www.aqua-mix.co.uk
Strip any remaining seal away, then use nanoscrub, applied with a white nylon pad. You'll find that using a slow speed drill with a circular attachment works well. If the
tile sare really filthy, put a paste of heavyduty cleaner fluid, poultice powder and nanoscrub down with a paint brush, work it in with a scrubbling brush (lightly), then put sheets and sheets of wet newspaper down on top. (Just put down some newspaper and sprinkle liberal amounts of water on top.
Then leave it for 24-48 hours. The longer the better. If you need to walk on the floor, put down some bin liners or heavy duty rubble sacks.
Come back to it, remove the paste, scrub it, wipe it, then repeat with the nanoscrub.
Viola. You are ready to colour enhance (I use a Fila product), one-three coats. This is a nightime job, letting it dry whilst folk sleep. Then back to the Aquamix product after you're happy with the colours with a sealer and then day after with floor shine and hardener.
I normally reckon on 2 hours per square metre in time, spread over the week (for a client). Nice thing is that it's relatively easy work and can be done at the end of each day, working its magic overnight.
My clients have all been thrilled. And the floor renovation will last for years 95-10 I reckon) depending on footfall.
if anyone out there has short cuts or better suggestions please share! Two words of warning - some of the proocesses can get funey - especially the colour enhancing, so plenty of ventilation. Not easy sometimes given that it's best done at night - unless you can absolutely guarantee no-one walking on the floor for 4-6 hours.
Second, some of the aquamix products (not all) are more corrosive than others, so read the label. If it says not to kneel on the product, they mean it.
Kevin