I need help. We have been re doing our guest bath for several months (10) and we are tiling the tub surround. We started in Feb and are almost finished when we noticed that our tile is starting to crack. We are using a 4x10 ceramic subway. We gutted down to the studs and used hardibacker for the foundation. The cracking just started within the past few weeks. The cracks are hairline.
any help would be greatly appreciated..