I want to finish my basement. My walls have brick on the top half and stone on the bottom hlf. The whole walls have a white coating (looks a lot like white wash paint). I want to have a natural look with the bricks and stone showing when I am done. The mortar to the brick is in good shape but the stone is crumbling. I plan on remortaring the stone with tinted mortar. I would like to seal the wall for moisture control also. My problem- is what order do I do these?