We have a joint distance of about 5 millimetres between each tile. Previously, we had a robot hoover that could do the vacuuming well at this, but because of the small wheel at the front, you could see the robot hoover making very small jumps upwards. Now we wonder if the pads of this device, although hanging at the back, would mop adequately in this regard. This is a very important question for us that we would like to see answered before buying this device.