Oh No! My grout won't cure in the shower

You may have applied grey grout instead of white grout, check the container.-Jitney

One or the other, or live with it.

What type of grout did you use?

Option #3 - Use a golored grout sealant like the one from AquaMix. It applies like paint.

Several months ago I put down a tile floor and it was my first time to do so. I grouted with laticrete 1500 tri-poly sanded grout, parchment color. I ended up with the grout lines being somewhat variable in a dark/light manner.

I was told that the mistake I made was not being extremely consistent when I sponged the grout with regard to the amount of moisture in the sponge. If it is more moist the grout lines come out darker, more dry, they come out lighter. The sponge really has to be squeezed very dry each time you rinse it to insure consistency.

If it is any consolation, over the ensuing two months the grout lines seem to be getting more consistent in color or at least shade to the point that I'm going to continue to do nothing and hope for further improvement. It looked just OK initially and much better two months later.

Frank

Fans and heat lamps.

Then it's cured.

After two weeks, it's as dry as it's going to get.

Different brands of grout, or even different batches of the same brand, can be different colors. Also, using too much or too little water in the mix can change the color slightly -- not much, but enough to be noticeable when you're seeing them side-by-side.

You might be able to bleach to gray parts...

... but this sounds like your best bet.

Hard = "cured"

Thanks, I was hoping there was such a product. I will get to the tile store this weekend. For the other people who responded- all the grout I used was from a single 10# box of Polyblend non-sanded grout, antique white color. Richard

Some "antique white" grouts are anything but white.