Wayne from Rock Stone changed our existing window sills from brick (which was breaking apart), to a solid piece of limestone with drip edge. He always parged our foundation which was crumbling. Most importantly, before applying the parge, he took his time to grind down the existing cement - needless to say, he showed good attention to detail. Take a look at the pictures of the (1) window sills (before on right, after on left) and (2) foundation/parging work (before/after). Overall, I recommend this this company!