Improper coverage is generally the most common reason. This simply means that there is not enough thinset beneath your tile to properly adhere it to your substrate and support it. If there are any unsupported areas beneath your tile along the edge or in the corner of the tile, walking on it will eventually work what little support it may have loose and the tile will move down and up every time you step on it. The tile moves, the grout does not. The grout loses the battle and starts to crack out. By ‘crack out’ I don’t mean like that ridiculous Intervention show on cable, I mean it will start to crack and come loose.
Call us today to discuss how we can help clean, repair, and stain your grout to get it looking like new!! Floor-Care.com is Arizonas leading tile and grout cleaner. Our service is second to none! Read our reviews and see for yourself why we are confident when we say we can help!