adhesive for outside
After a couple of years without it, we have enough $$ this year to bring back our mosaic stepping stone project for our local elementary art camp (year 16). Yay!
We have always used the thick yellowish tile adhesive from the hardware store. The helpers put it on and it is kind of unwieldy. Often it is laid on either too thick or thin, so tiles either come loose or it oozes between the cracks. The tiles we use are usually the same thickness, because they are surplus from various stores and a friendly swimming pool installer. Sadly they are usually pretty boring colors, but we buy a few primaries just to punch it up, and plenty of glass blobs.
Is there an affordable kid-friendly adhesive? I'd buy a gallon or so of Weldbond and put it in our little bottles but I don't know if that would be ok for outside use. We use regular grout.