Rectified wall tiles undergo an additional machining process to their edges, called rectification, that gives them a super straight 90 degree edge. This adds to the overall effect of quality and means that grout joints appear smaller adding to the overall effect of the tiled surface. In fact rectified tiles are finished to such precision that even on a large format tile a grout joint as small as 2mm can be employed. This process adds authenticity to tiles that simulate certain effects, such as tiles that look like marble or natural stone as these natural products have similar edges. It also compliments minimalist styles like plain white gloss floor tiles or ultra modern designs giving them an extra crisp contemporary feel.