Sliding into trouble
Place tiles straight down in their final position. If you slide them into place, you will create a ridge of adhesive on the edge of the tile, which will be forced up between the tile joints. Wipe adhesive off the face of tiles before it can harden.
Better to butter
The general rule is to put the adhesive on the surface you are covering, not the tile. But when it comes to fixing narrow cuts and edge tiles, it’s better to butter the back of the tile with adhesive, then press it into place.
Roll over mosaics
A paint roller is the ideal tool for bedding sheets of mosaic tiles into the adhesive. It ensures even pressure and the avoidance of high and low spots across the wall or work surface. A rolling pin makes a good alternative if you don’t have a paint roller handy.