| You can certainly use grout out of doors. Your described method above sounds like it might cause you to have an uneven finished project. here are two links that might be helpful. I haven't checked them in a while but the hgtv link used to show a step by step instructions for doing mosaics and the other shows another project we did using mosaics . www.hgtv.com/hgtv/gardening/ article/0,1785,HGTV_3546_1378790,00.html - 52k www.taunton.com/finegardening/pages/g00121.asp - 27k |