Grout Quality?
Hi everyone, thanks for the encouragement/advice with getting this student project grouted! I am very new to mosaics. Anyways, I was wondering if anyone has any input....while I think the project looks good, the grout feels too dry almost, like sandy/flaky. When I rub a finger on it, some of the grout comes off. It feels like it could break/chip. I followed the general advice of making the grout extra peanut buttery thick and not adding excess water when wiping the grout off, but is it possible that it was too dry? Or is it just the type/quality of grout that I had (pictured as well).
Also, for this project (pictured) it was very easy to wipe the excess grout off, but on a second student's project, it took so much work and unfortunately an extra wet sponge and digging my nails in to expose the tile. She was using "raw" tile, like not polished or painted. Could that have been the problem? Or perhaps we initially spread it on too thick...either way, it was weird to me that the exact same grout mixture wiped off so easily on the pictured project, but was almost impossible on a different project.
I am going to be grouting more similar projects. Do you have any advice or different brand recs? Thanks so much in advance!