Ultrasolve can be useful on a lot of tiles. Sometimes a solvent carrier helps depending on the surface. However Ultrasolve will ever so slightly darken the surface

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[size="2"][color="Blue"]TILING LOGISTICS Aqua Mix Trained Operator. Specialist Restoration, Grinding, Honing, Polishing and Repair of all Natural Stone. Marble, Granite, Travertine, Limestone, Slate & Quarries to name but a few. We also do Grafitti removal, grout recolouring, sealing, resealing and cosmetic repairs. E Mail any questions to tilinglogistics@hotmail.com

what a thread

Thanks for sharing nice and helpful information.

I found a wonderful site teaching how to lay floor tiles,

please visit the link below might be of some help to you

Tile Buyer Guides

To tile straight over the top of old or existing tiles you will need to, use a suitable detergent or tile cleaner to remove all the dirt and grease etc on them, do this by horizontally and vertically scoring the tiles using a tile scriber, this will facilitate a bond between the old tiles and your new tiles.

It's really hard to give some suggestion if we cannot see it personally. Better to show some pictures. Anyway try to use Aquamix as they have the benefit of being water based.

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