Removing Cement from Stone
I used to be owner of a 100 year old limestone house with lovely bluestone steps. Now, I am the owner of a 100 year old limestone house with bluestone steps covered in cement! In repairing cracks in the limestone walls that encase my steps, the contractor applied cement so sloppily that it got all over the bluestone steps. He attempted to remove it with water, but to no avail. I've now got a hugely disfigured, cement-ridden bluestone staircase leading up to my front door. Can anyone suggest a way out of this mess that is short of totally rebuilding my stone stairs? Is there any cleaning process that will effectively remove cement from bluestone without destroying the stone itself? Is it possible just to reface the risers and treads with bluestone? Help!