Discoloured porcelain tiles

[Aspect Tiling]

Glad your making progress. Hopefully you'll get the tiler to sort out his clear mistake. If the tiles do need sealing, are you sure that LTP recommended the mattstone sealer. As far as I'm aware mattstone is only suitable for natural stone.

[h=1]LTP Mattstone[/h]
[h=2][/h]
Description: Suitable for all wall and floor surfaces LTP Mattstone provides a natural matt finish with minimal change to surface character on travertine, quarry tiles, terracotta, slate, stone, unpolished marble, terrazzo and cement floors. Provides effective resistance to staining from coffee, wine and other domestic fluids. Maintain with LTP Waxwash on floors and LTP Stonewash on walls.
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[Chunkyd]

Yep that's what the technical guy told me to use, sent him the link to the tiles we purchased so he had all the details. He did say that you should only apply one coat of the LTP Mattstone sealer only and no more, if there were any water marks etc

 

[andyMc]

were they sealed before grouting or after... if it was sealed after grouting, then he has sealed any excess grout and damp patches in, looking at that picture. He should of sealed and let it dry before he grouted. That is the whole idea of sealing them, so they dont get stained by grout or any other muck. but any good tiler should know that they should wash them down, let them dry, then seal before you grout