A blog reader submitted the following question to us: “After removing the grout from our natural stone polished tiles, and before sealing, they were a couple of small stains which were probably water. We used Cillit Bang to remove this but has made worse. Are there any products that could remove this?”

In my last article I mentioned the coatings that certain factories are applying to their porcelain tiles. In truth there are lots of different types of coating being used. Their purpose is to afford some protection to the tiles during transport, handling and of course, installation. Why are they doing this?

I said I would be back talking about problems and issues with porcelain tiles and here I am. This won’t be the final chapter either. Having had yet another call today on ‘cloudy marks’ on newly laid porcelain floor tiles I thought should bring it up as a blog topic.So, what is the problem?

Michelle asks: “I had black granite floor tiles put down in my bathroom recently and they were sealed after they were put down but i have just noticed several splash marks that will not wash off. The only cause I can think of is that when my husband was painting he washed brushes out in [...]