White marks on tiles

[poynton phil]

Can anyone suggest what these white marks could be. The tiles are anti slip porcelain, the marks appeared about a week after they were laid. Since then they have been cleaned again with LTP grimex, and again within a week they have come back.

 

[Rizzle from the Portizzle]

whater stains held on the surface by the none slip get the client to wipe the floor clean and dry after using shower .wipe them with dilotede descaler should clean them off

 

[Mr Tiler]

could you seal these tiles to stop it happening ray?

 

[poynton phil]

I forgot to say.They did have a coat of sealer after they got cleaned with grimex.

 

[Rizzle from the Portizzle]

I forgot to say.They did have a coat of sealer after they got cleaned with grimex.

what type of seal did you use over seal or inpregnator what type of glaze ie honed semi glaze

- - - Updated - - -

could you seal these tiles to stop it happening ray?

depends on tile surface

 

[poynton phil]

I dont actually know what sealer was used probably LTP matt stone, which is a impregnater. And the house owner say's there seems to be more white marks than before they were cleaned with grimex, and sealed.

 

[Rizzle from the Portizzle]

I dont actually know what sealer was used probably LTP matt stone, which is a impregnater. And the house owner say's there seems to be more white marks than before they were cleaned with grimex, and sealed.

could be the seal not cleaned off the surface aloud to dry now the water from the shower is is causing it to bloom to check this get boiling water from a kettle and pour on a patch were the marks are and see if it blooms more if it does you will have to remove the seal l

 

[Mr Tiler]

sorry ray would that be pouring and then waiting for it to dry out or should it bring up the marks straight away? cheers

 

[Rizzle from the Portizzle]

sorry ray would that be pouring and then waiting for it to dry out or should it bring up the marks straight away? cheers

normaly very quickly the thicker the seal on top the quicker the reaction