Tiling my en-suite was part of a larger build project. The builder subcontracted the tiler who did an excellent job. However, the builder didn’t order enough tiles so the tiler had to come back for an extra day to finish. The builder is now trying to charge me for this extra day saying he ran out of tiles because I wanted the grout lines on the wall and floor aligned and this used additional tiles. Both the tiler and my husband say this is not the case but I thought I’d ask for other opinions? The en-suite is only 2.4M x 1.2M. Despite the fact the builder quoted for a fully tiled bathroom I still had to pay extra for chrome trim, grey Silicon and tile backer board. Is this normal practice? Thanks for your help.