We're currently renovating our family room. Pulled out all the old carpet and padding and we're going to install wood laminate. I found a roughly 3x6 patch where some ceramic floortile was likely removed. Much of the mastic is still stuck to the floor (concrete slab in that area). What is the most efficient way to remove this? I've got masonry tools and a 4" grinder with a diamond blade, but fear that using these will be very time consuming. Is there something I can rent that might make shorter work of this?
Thanks in advance,