Spent weekend scrubbing. Use HG Spot Stain Remover and then HG Remover as recommended by HG helpline. White marks still there despite repeated attempts. If anything, looks worse now that the sealer is off. Won't post any pics as it is too depressing and I think they would make the top ten of tile disasters and you'll all tell me and I'll feel worse!
Although I think further scrubbing would give some minor improvement and colour enhancing stain would darken and hide a bit, it looks very unlikely that the end result would be anything that anyone would want. Realistically, I think I am onto honing or re-tiling. So it is really a cost comparison exercise. My questions:
1. When tiles and adhesive are lifted, does the subsurface (self-levelling compund in this case) usually need renewal/repair?
2. What are the pros and cons of grinding an existing floor?
3. If within the
rules of this forum, if anyone is within reach of Cardiff and wants to quote or give an indicative cost for grinding (or replacing) a 31sqm area, would be happy to receive PMs. I need an idea of comparative costs so I can choose a course of action.
Thanks you all for your help so far. Invaluable.