Grouting decorative tiles to look like old brick
There's wind noise in the microphone. The seam shape isn't quite right; they shouldn't be recessed, but as long as they keep an eye on the sealant, I see no downsides. My grouting speed with this method is comparable to the installation speed. However, I must say I'm more thorough than the professionals, so it's slower. You might want to consider using a mixture like Quick Mix RSS, applied with a spray gun and cleaned with a stick.