What could this white substance that appears on our shower grout be? I had cleaned it off less than 12 hours before this picture.
Overnight, we had a space heater on in the bathroom to dry out some shoes, so the temperature was about 35°C.
What could this white substance on grout be
grout
Related Solutions
A Scotch Brite pad has always worked for me. If you are dealing with a large area, use a random orbital sander with a Scotch Brite attachment and the universal lubricant, water.
I seriously doubt that you will remove the dye from the grout using any method. Your best bet is to pick up a grout saw at lowes or home depot for about seven dollars that has a diamond blade on the end. You will be able to use the pointed end to file down the small amount where the gray overlapped( if that's what happened). IF it was too wet and these colors bled, then file down into the grout where it bled, mix your grout a little tacky instead of loose and touch up the edge.
Best Answer
That is calcium buildup from hard water. Do you have well or live in the city? Some cities also use well water mind you. Another thing can be if it is city water, high chlorinated water. Ultimately no way to resolve either other than cleaning it with baking soda, vinegar or CLR.