The main cause for this variation in color is uneven drying of the Portland cement in the grout. There are jobsite conditions and factors which create the conditions for uneven drying and improper cement hydration. Like colored grout, this is mainly due to the uneven drying of the cement.Click to see full answer. Just so, how do you fix discolored grout? Baking soda breaks down the buildup and provides a minor abrasive that scrubs away stains without damaging the grout or surrounding tile. Combine 3 cups baking soda with 1 cup warm water in a small bowl or bucket. Apply the paste to the stained grout. Furthermore, why is my grout drying lighter in areas? The grout color can vary due to how fast or slow the grout dries. If the tile installer uses too much water in mixing the grout and/or during the cleanup of the grouting process they could inadvertently pull out color pigment from the grout that will cause some areas to be lighter than other areas. Also know, does grout dry a different color? Grout is subject to color variations from batch to batch. If you buy different batches and mix them separately, your grout will probably dry with a lighter color in at least one area, even if they look the same wet. Although the grout will still dry lighter, the finished job will be a uniform color.How long does grout take to dry to true color?Yes the grout after 24 hours is usually the color it will be. Your grout should continue to lighten over the next 24 to possiby 48 hours (depending on humidity and temp), and should be uniform in color (no dark or light spots).
Why is my grout drying different colors?
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