Henry 547 not adhering to concrete
Joe- I’ve been prepping my concrete-floored basement for Adura Max and found I needed to do something about some old settling. I know it was old (i.e., not recent), because there was old patching along a crack that carpet installers must have done around 30 years ago. I used Henry 547 on a roughly triangular 9’x13′ area – tapered from around 1/2″ near the wall to feather edge in the room. After a couple of weeks we were getting ready to start laying plank. I found that there are cracks running through much of the new patch, and much of it has failed to bond to the original floor. I assume I’ll need to remove it, but what can I do to ensure bonding the next time? I tested the moisture in the concrete before starting, and it was fine – at least according to Mannington. I assume the old surface is the problem. As I noted, I removed 30 year old carpet & pad, so nothing was glued down except the edge of the pad. The info from Henry recommends only mechanical prep, with shot blasting as the preferred way – not really practical for me. Thoughts?