How to Use a Grout Bag
I have seen grout bags in the store before and wondered why on earth people would want to use them. It seemed like such an unnecessary step.
Then I bought and installed an unsealed slate like floor. Cleaning up the grout off of the tile was a nightmare. The next floor we installed we sealed the tile first, and while that helped, it did not eliminate the problem since the tile has a very uneven texture.
Typically grout bags are used when the grout will stain the tile or where it would be difficult to clean the grout off when finished with the job. So even though some installers don’t like using grout bags because they feel the grout does not get properly pushed into all of the crevices, leaving air pockets that can cause the grout to chip out or leave the tile unprotected and cause the corners to crack.
To make sure that doesn’t happen, I still use the tile float, but try to contain the mess as much as possible.
Use the grout bag in the same way that you would use an icing bag.
Then using your grout float push the grout into the spaces.
