Hi, I continually suffer from cracking grout in my dormer conversion shower room. The project was completed almost 4 years ago now and the quadrant shower has not really been used to its full potential. I am now on my 4th problem whereby the grout cracks at the rear of the quadrant where the tiles meet. The builder is now saying that it is settlement and that they are not covered? Surely this can’t be right, I have friends who have conversions and no problems with the tiles or grout cracking. Any ideas or what I should do to get this fixed.