Needed to remodel the small bath in our house (built in 1960) this included the shower and floor. I have used Custom Building Products grout for years but not the Prism line until now. The prism grout worked perfect, easy mixing (no lumps) and was easy to float, it dose set up faster than the regular line of grout, this can be good or bad depending how fast you work. Cleanup is a bit sticky compared to the regular line of grout but is worth it for a better product, time will tell if it lives up to its "stain resistant - no sealer required" statement. The only downside is that they do not recommend using it with glass tile, had to use the regular smooth grout for those tiles, beyond that, great product.
The box has two bags and you would assume that they would be the same color as written on the box. NOPE! One bag was "earth" (what I purchased) and the other bag looks like "linen" in the same EARTH box. So now we have half the main room in one color and the other half in a light color. I am so angry I don't even know how to write this review in a calm manner.
I purchased Prism grout based on the claims of the product and recommendations to use manually mixed grout on my biggest tile project yet, 345 sf of ceramic tile. I had previously used pre-mixed sanded grout on a couple small entryway tile projects and found it dried quickly and was extremely hard to clean off the tiles before it dried. The Prism grout has finer sand, almost mixes itself into lump free state. I mixed half a bag at a time, and it never dried out on me. My grout lines were 3/16, and it laid in them beautifully. I worked the edges of 4-5 12x24” tiles at a time before floating and wiping clean. It did dry a lot lighter than the swatch on the bag but darkened to a satisfactory color after sealing it. It left a haze on the tiles, which I went back over and wiped off once with water the next day, followed by two cleanings with haze remover, and the tiles looked good as new. Sealed the grout lines (had to let the sealer really soak in to darken the grout) and tiles. My customer is very happy. As far as the grout color, I will simply choose a darker color next time. I will definitely use this grout again.