Removing thinset before putting down underlayment for laminate floor ?
I'm installing laminate floor in a great room. We removed the ceramic tile that was on the floor but I've tried everything to remove the thinset or cement that is on the plywood floor with no luck. Do I need to remove this before laying the underlayment and then the floor?
....... Do I need to remove this before laying the underlayment and then the floor?
To get the rest of the Thinset off the plywood you will need a mechanical method such as scraping with a floor bully and if needed, finishing with a rental Vibrating Floor sander loaded with 60 grit sandpaper. You need to get the floor smooth without significantly damaging the top layer of the plywood.