i've got a job to do with 9mm thick wall tiles into which i have to
insert a glass mosaic border which is 3mm thick. Any tips or advice on
how to get borders flush with wall tiles?
make a dog eared screed, I use glazing packers to do this, basically you cut the packers ends to the depth of your mosaics, fill the gap between the field tiles with addy and then screed it out.
Box of cheap thin tiles from Bandq ,cut to size of border then fix to depth needed to build out,fix glass mosaic by covering back of the tile with adhesive(I use rapid set floor adhesive)then tamp into place with grout squeegee