If all else fails remove the stained brick and replace with similar bricks probably from a place that carries used housing materials if replacing the bricks do not break up and throw away.
How to remove roofing cement from brick.
If you bring it in tell the cleaner that the stain is roofing tar.
A tar stain in the middle of the room is hard to hide and it is far less expensive to hire a pro than replace the carpet.
When fixing a loose brick or making repairs near a brick surface wet cement or mortar might spill over onto the brick.
Tar is usually too thick to penetrate brick unless it is a commercial quick drying solution of tar and thinner.
In the real world accidents happen.
Over the years we do a lot of this and found this to be the most effective method.
Consider hiring a professional to help remove the tar.
Dry cleaners can remove tar stains from clothing or other articles made from most fabrics.
Once it sets it can be very difficult to remove without damaging the brick.
Remove mortar carefully and simply turns the.
Concrete film or concrete residue is a pain to rem.
Before you start to use chemical solvents saturate the brick with as much water as it will take to limit how much solvent stain wicks deeper into the brick.
You may need to make several attempts to clean the brick before the cement is completely removed.