[Rob Hall]

We have a Terracotta Floor tiled externally, but we have salts appearing all the time, as if moisture is trapped in the tile. Is there any products to bring out the salts?
The sealer was specified by LTP, the sealer was Colour Intensifier Stainblock, but no linseed oil has been used, this surprised me as we always have oiled in the past....any ideas?

[Floor_Tony]

What you are describing is Efflorescence What you would need to do is strip the sealer of then treat with phos acid then allow it to dry out for a week or so then if it it re-appears treat again with phos then with Eff-ex then again wait to see if it appears again then if it does re-apply another treatment then seal my suggestion would be a premium impregnating sealer either clear or enhancing. No oil!

[Rob Hall]

What you are describing is Efflorescence What you would need to do is strip the sealer of then treat with phos acid then allow it to dry out for a week or so then if it it re-appears treat again with phos then with Eff-ex then again wait to see if it appears again then if it does re-apply another treatment then seal my suggestion would be a premium impregnating sealer either clear or enhancing. No oil!

Thanks Tony