Impact Design and Construction recently installed interlock for my front driveway, side of the house and backyard. My wife and I are really happy with the final product. They did a great job in bringing our vision to life and their professional advise on some of the details (such as the style of the interlock and the sloping in the backyard) helped make it even better than we could have imagined. The quality of their work was unbelievable and I loved the fact that they were perfectionists and really cared about even the smallest of details. I would highly recommend them to anyone wishing to do their interlock.