My lawn had old impact sprinkler heads that kept failing and lack of coverage that always left dead grass in certain areas. I first looked at expanding the existing system, but then determined it would be easier to install a new system. Project also involved new sod on the front lawn. I chose Sal because his price was right and he uses a soil boring machine, so the lawn doesn't look damaged. Lots of mature tree roots made the job difficult, and due to unforeseen underground concrete some sprinkler heads where not installed where planned. Sal didn't go the extra mile to get around or through the concrete. So most of the lawn has new heads in new locations, but one spot has new heads in same locations. Also, one spot that use to have heads doesn't anymore. The current plants in that spot don't need watering, but I still would have liked the option if the plants change. Overall water coverage is complete, but I was still a little disappointed that I didn't get a completely new looking system. Sal also kept his composure and professionalism when dealing with my outspoken tenant and neighbor. All in all, Sal did a fine job and this was a good experience.