Thinset as grout?
Hi all, I'm in New York. I just finished an outdoor patio project which was installing multi color 12x12 slate over a concrete slab. I have 3/8" grout lines. It's 350sq ft.
Can I just use grey thinset to grout with? The color matches fine and it's quite a bit cheaper than grout, plus I thought it might last longer outside.
I used Flexbond to install the tile, but if I can use thinset for grout can I just use the cheaper unmodified thinset?
Thanks all for any replies,