White Film On Ceramic Tile

That white substance is called efflorescence and its due to the natural mineral salts in either the mortar and or the tiles.
White film on ceramic tile. When you work hard scrubbing your tiles so they re wet and sparkling you might be surprised to see white film streaks or spots appear as the water dries. Even if you have diligently wiped down the surface with a wet sponge haze will remain and will not come off until you take special measures. Efflorescence is a white crystalline deposit that is composed of salts lime and or other minerals. The grout on my 2 year old bathroom tile is giving off a white powdery film like substance.
White marks after tile cleaning. Less common than efflorescence is the white residue that can form on polymer modified grout if the grout is subjected to excessive moisture before the polymers coalesce. You can remove this film and prevent it in the future by using different products outlined in this article. I let the shower dry for a number of days and then used sealant on the grout but the problem persists.
Grout haze is a semi white film left on the surface of tile after grouting. Its really hard to get rid of and its usually treated with muriatic acid and then sealed to prevent water penetration. Regular floor cleaning will not remove it. Using any water based products will not have any effect on getting rid of it.
These deposits may become visible on many types of building surfaces such as concrete stucco grout masonry brick natural stone clay ceramic tile and even wood.