Apply pressure to the pry bar until the brick pulls free from the floor.
Removing brick from concrete floor.
Removing mortar from concrete slab floor can be tricky.
Lift the brick and discard.
This may take some effort.
Do not be afraid to cause damage to the brick or the surrounding bricks.
Once it is remove the knife and then wedge the pry bar up in order to remove the brick.
But if you pull up old tiles it may be something you will have to contend with.
This video shows you how to remove single bricks from your house without damaging them.
Yet when you need to remove it it can be a nightmare.
I should warn you that you might find a slab underneath the bricks and that will require some different tactics.
That way rather than having to reduce the bricks to dust you should be able to pop them out whole.
However this method leaves the harder cementitious mortar in place around the brick which can be rather difficult to chisel away once the field brick is removed.
Mortar is a cement based paste that is used for binding building materials like bricks tiles and stones.
Do not remove the putty knife until the pry bar is firmly in place under the brick.
One tip would be to start at one corner and break up a brick then chip away the subsequent bricks in the direction of the empty space.
Slip a pry bar under the putty knife and pull out the putty knife.
Wedge the pry bar in underneath the putty knife.