That's good to know. The current floor is surprisingly unlevel. There's a 30mm difference from one corner to the opposite corner. Ardex NA says...
I can see I'd need to remove anything loose etc, maybe any remains of actual wood. The Ardex NA says it can be laid over bitumen adhesive residue,...
We're preparing a subfloor to take a new floor in our utility. The intention was to put electric underfloor heating mat and then tile with...