I just had carpet installed in my condo. It's Shaw textured nylon carpet with 8 lb 1/2" rebond pad. It’s laid on gypcrete or something. It looks like concrete but it’s something softer. The previous pad was glued and the seams taped. Previous to that there are old staples around the perimeter. This time the installer started out stapling all the seams. I asked if he could use glue instead and said because I was concerned about the gypcrete cracking/chipping. Maybe silly of me but the previous pad with the glue seemed good. The installer said he didn’t have to use anything. So, the pad has no glue or staples and the seams are not taped. It seems fine right now. I’ve noticed no gaps or bumps. but, I wonder if this will be a problem after time with wrinkles or other problems. What do you think? What’s the risk or downside to this? What should I watch out for? Thanks!