Removing Old Concrete From Slab After Removing Brick Wall

Remove smaller patches of thinset using a chisel.

Removing old concrete from slab after removing brick wall.

Place a 1 inch 2 5 cm putty knife at a 45 degree angle to the remaining thinset patches. Press the trigger to drill down into the masonry. You should notice the thinset patches breaking apart after about 20 to 30 seconds of hammering. Once set concrete fasteners generally are not designed to be removed from concrete brick or block without damaging the base material into which they have been set if pulled on hard enough the base material will fail the anchor will become detached and there may be a hole in the concrete that is the shape of an upside down cone.

Steel reinforcement can ruin your day. You can tap them with a cold chisel and hammer to remove them from concrete brick or metal but that strategy is too drastic for removal from vinyl or glass. I only have this small area to do and i hope i don t have to do this again. But if you pull up old tiles it may be something you will have to contend with.

Removing mortar from concrete slab floor can be tricky. The surest way to decide whether to use a sledgehammer or a jackhammer is to experiment a few days before you begin full scale demolition. Within 10 minutes you ll know whether it s a job for a sledge or a jackhammer. A better alternative is to soak the chunks with a soap solution to lubricate them then gently work a smooth edged flexible metal putty knife behind each one and gently pry it.

Mortar is a cement based paste that is used for binding building materials like bricks tiles and stones. If it s rebar your best bet is to jackhammer the concrete off the rebar or bring in a pro with a demolition saw to cut it up. The sooner the better as time will be against you if you are trying to remove these stains. And it s great for creating durable surfaces.

If the other cutters work then i think i ll try that first and i may even have some on my truck because i had to cut a hole in a block wall to run conduit. Insert a concrete drill bit into a high speed drill and put on safety glasses and a dust mask. Just take a few whacks at the slab with a 12 lb. The easiest step to remove efflorescence is to wash the wall and scrub the area to see if the stains go away.

Getting rid of the concrete. Step 3 place the drill bit on the masonry just above or below the anchor. You will need to use only clear water to avoid worsening the situation. Removing old mortar from concrete slab yes that bosh cup is about 111 but i did find a smaller one for 70.