Always work inwards from the ends towards a centre mark when fitting quadrant tiles between a wall and a bath or basin. This ensures a neat appearance and avoids the necessity of trimming either the mitred corner tiles or the round-edged end tiles, which could result in breaking’ the only two tiles available for completing the job.
First mark the centre of the length of the bath or basin on the wall. Fit a mitred tile into the corner, applying the adhesive recommended by the tile manufacturer. Then fix plain quadrant tiles along the length, stopping-short of the centre mark. Repeat the same procedure from the other end. Starting with the round-edged tile. Finally fill the gap between the two rows. If it needs a cut tile, rub the cut edge with a glasspaper block or carborundum stone.
Repeat this procedure along the width of the bath or basin, using a trimming knife to cut off any adhesive that has squeezed out from the underside of the tiles. When the adhesive is dry. Grout the joints. When the joints are dry use a cloth, dipped in turpentine substitute, to wipe the tiles clean. Avoid over-soaking the cloth or the turpentine substitute may seep behind the tiles, where it will loosen the adhesive.