Whats the advantage to scrape the old mortar after floor tile demolition?
Every flooring installation starts with a clean concrete slab. Having a clean concrete slab will help you see settlement cracks( even small hairline cracks) on the concrete slab.That can be repaired before your flooring installation.Finding a good flooring installation company will be the trick part ,because they will send out crews with little or not experience on the field.Check references 3 or 4 at least.This little step will save you headaches.