What consideration should be given to joints between tiles?
It is important to have a joint between tiles to allow for movement in the structure. It is also important that tiles do not butt against one another. Where tiles are in contact with each other, this will increase further the effects of any stress built up within the tiling layer where movement exists or may be anticipated. Leaving a suitable width of joint between tiles and filling these joints with a suitable grouting material enables localised stress relief to occur and when combined with the use of adequate movement joints, will reduce the risks of any problems occurring. The width of joint can vary depending on your tiling project. A 6mm joint may be used on a floor, whilst a narrower joint of say 3mm may be used on a wall. Your TTA tiler will be able to discuss this before tiling work begins. The British Standard for tile fixing, BS5385, suggests the following tolerances on finished work. • Flatness and variation from plumb: • 3mm under a 2m straightedge. • Variation across Joint
