How do I remove black mastic stains from brick
I recently bought a place with a large two story mirror covering a brick fireplace. I broke and removed the mirror and was left with large gobs of mastic that were used to affix the mirror directly to the brick. I used a putty knife, a lot of time, and Contractors' Solvent by De-Solv-It to remove all/most of the actual mastic. I am now left with the stained brick. I am assuming the solution will have to be chemical but any experience or advice to remove the stain would be more than appreciated.