Whether you have an attached or a detached garage, you can be subject to a sinking floor. Often people realize their garage slab has sunk after they notice a gap under their overhead door or when the small “man” door begins to “stick”. Other indicators can be that the water in the eave troughs is running over the edge rather than going down the drain pipes or water from their car pools in one certain area of the floor. Regardless of what the indicator is raising a garage floor should be done as soon as it is noticed.