Thanks. It usually takes a newly grouted surface several days or weeks to become fully hardened. I wish I'd asked them to mix white and the dark grey cos the finished grout is far too dominant - it's the first thing you see when you look at the tiling! Grout will always be lighter when it is cured and dry, no matter how dark it was when wet, and this is particularly true for dark colors like charcoal black. You can try using a grout enhancer over the grout and tile to darken the grout, but immediately buff dry the tile and grout surface with a lint free cloth. The grout is applied and you use a damp sponge to get the excess off the face of the tile. Lightening dark grout is a relatively simple process that can be done with bleach: Mix your bleach with water. Pour bleach on the grout and scrub. Dip a stiff-bristle brush into a dark grout stain and carefully brush it along the grout lines. Also was this a glazed ceramic or what kind of tile we talking about? Let the bleach sit … This material looks like wet cement when it is put in place, and it dries hard within a short period of time. Richard C. Mineral Tiles sources and distribute innovative tiles such as subway tiles, glass mosaic, peel and stick backsplash, ceramic, recycled tiles, stainless steel, and contemporary porcelain tiles to cover floors and walls for residential and commercial applications such as kitchen backsplash, bathroom, swimming pools and spas, shower floors and walls. Bathroom tiling by Tilingnovice posted Mar 20, 2017 at 4:05 AM I am new to tiling, tiles are going on well but having grouted a wall for shower installation it's left me thinking I went too dark with the grout, will probably just have to live with it now. If that sponge is too wet, it will cause the grout to turn light. Once it turns light, there is little you can do to correct it. Grout is the hard material that is commonly used in between tiles to create a smooth surface and to keep the tiles locked in place. There are two solutions: The first option is to seal the grout with a sealer known as a “stone enhancer” instead of a regular tile and grout … How to Clean Grout if It Dries Completely. Might also happen if you clean up too soon. Keep adding the bleach mixture onto the grout every 10 to 15 seconds while you scrub. If it stood too high and is now near the surface of the grout the grout may discolor while drying. The main component of most grouts is Portland cement. It has been over 48 hours, is this normal, is the grout still drying. Some times (mostly with wall tiles) a little extra glaze slopped over the edge of a tile during manufacture can cause a grout … It seems so subtle in these … ... when the grout dried it dried in several shades of the grout color. ScottieF, 25 Mar 2011 #1. You don’t want to get too far ahead of yourself as it dries quickly, making it more difficult to wipe excess off. In the picture below you can see the new grout color towards the top, the old yellow grout starts below the plumbing. Websites seem to suggest you can't lighten dark grout, only darken light grout. Have any of you guys done this successfully and if so, how? Removing grout from the tile surface is easiest to do when the material is still wet. How do you lighten dark grout? I HAVE JUST HAVE GROUT PUT ON MY FLOOR AND IT IS TOO DARK, IS THERE A PRODUCT OR PROCEDURE I CAN USE TO LIGHTEN - Answered by a verified Home Improvement Expert. What caused the grout to turn light is using too much water in cleaning up. The grout may be light color because too much water was used in mixing or cleaning it up so it pulled out the pigment or maybe it is because it dried at a different rate where it is lighter. 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