SAME PROBLEM AS YOU OUTLINE ABOVE, EXCEPT THAT MY BRICKS ARE NOT PAINTED, AND I WANT TO RESTORE THEM TO THEIR ORIGINAL CONDITION.
DID YOU GET ANY ANSWERS TO YOU REQUEST FOR A SOLUTION? THERE MUST BE SOME SORT OF ACID THAT WILL ATTACK THE HAIRY RESIDUE WITHOUT DAMAGING THE BRICKS
I WOULD BE VERY GRATEFULL FOR YOUR ADVICES
MANY THANKS
ALAN (U.K.)