How long do you think it took to piece this floor system insulation together? I don’t know the answer to that, but I can tell you it does very little from a thermal efficiency standpoint. Insulation efficiency is about thickness, but just as importantly, it’s about how well it’s installed. Did you know, for instance, that a 1/4″ gap in ceiling insulation between the ceiling joist and R30 insulation can reduce the insulation R-value to around R-11? That’s a huge breach in thermal efficiency. In this particular case, I don’t even know where to start, but I’d judge the insulation value as negligible.