QUESTION: I have a 6" long plank board oak (from Poland) floor that was originally laid pretty green. No need to argue why that happened, it is what it is. 5 years later the floor has gaps between a 16th and a 1/4" between planks. Plus, it was weakly glued to a plaster-leveled floor compound and there are several places where I can hear a hollow sound when I rap on the top of the wood. I think the only way to 100% solve my problem is to bring in the most professional floor layers in my area and completely replace the floor with new material. However I am wondering if there is a 'diving save' option where I use the technique you described above but with two phases: 1) use a fairly liquid solvent-based-version so the glue gets deep into the cracks, and 2) a second normal viscosity solvent-based layer for leveling the cracks. Would love to hear your thoughts and recommendations
