we are removing old ceramic tile from a concrete floor, the tile is comeing up easy but the stuff that looks?

Answer 1

Depending on the size of your job, you might find it fastest to just use an air hammer (if you already have an air compressor) or an electric impact hammer (home depot or rental agency) with a wide chisel. Like the contractor said before, go easy, hold it at a low degree angle to the floor and it'll take the mortar up like a hot knife through butter. I've also used a grinder, and while it does the job, it does take a good bit longer. If it's a really small job, perhaps a bathroom and you don't have the budget, use a hammer and pick up a wide chisel for like $10 at Home Depot.

Answer 2

Like motor. It is called thin set motor. Go rent a chipping hammer from your local rental yard. Make sure they have a wide blade. It will come up easy with this. Be sure to keep from chipping out your concrete floor.

Answer 3

Mortar.

Jesus... 30 years and can't spell.

I used a rented grinding wheel, a complete face mask and goggles... After I chipped the big stuff off.

I wanted the floor smooth for carpeting and didn't want any bumps on the concrete.

Answer 4

The stuff that looks like tar? this a very nasty adhesive. you can use mineral spirits to remove this but it takes a lot of work. if you plan to re tile the floor I would suggest scraping
as much off as you can and us a new adhesive over it.