Hi I have someone that has messed up tiling brick slips to the front of my house and wish to take them off and start again. The slips were put on with flexible adhesive which was attached to the old brickwork. They have not yet been mortared in. Before I try hacking the slips off can anyone tell me if it’s achievable to remove the adhesive from the house brick face so I have a semi clean flat surface to start laying them on again? I accept the brick slips being taken off are to be thrown away. The job will cost me over a couple of thousand with their screw up.