Why do my stone mosaic shower tiles and grout keep getting sighns of mildew?

Question

I installed small mosaic shower tiles floor to ceiling, grouted with stone tile grout and coated with 3 coats of sealer. After a while the grout appears to go an orange colour and signs of mildew appear in different lower tile places. I have cleaned it off and re sealed but it keeps coming back. Any suggestions

Answer 1

Do u keep the the curtain or doors clsed all the time , because it stay damp never gets air so, u need to get kill mold a midew , bleach won't even completely get rid of it just bleaches it but come back u have to kill the bacteria tht causes mold and mildew. then open door/window or something to let fresh air in and dryness

Answer 2

I think it's the sealer that's causing the grouting to go off colour, and wiping down with a little bleach will prevent the mildew from forming - and as somebody has already said, always wipe the shower walls down when you've finished. It really IS amazing what a difference it makes.

Answer 3

mould is a fungal growth and needs to be killed with a very strong bleach, it can often grow inside the grout so you need to rake it out. "cleaning it off" is not brutal enough.

Then you need to stop the room staying damp.

We've got 4 ensuites and non of them have mildew or mould.
Prevention is all about ventilation and heat.

Answer 4

It is a ventalization problem, leave the door open and fan on after you shower. and even then you might get some mildew.

Answer 5

Because you don't wipe them after you bathe or shower.

Answer 6

buy some sealer,your local diy store will advise you..

Answer 7

DO YOU HAVE A EXHAUST FAN? IS IT RUNNING WHILE YOUR TAKING YOUR SHOWER?

Answer 8

because you're dirty! dirty,dirty,dirty....