Williams Professional Painting soundproofed a room in my condo by installing a layer of Quietrock over existing drywall. My goal was to soundproof against surrounding sounds coming from any of the neighbors. With the soundproofing work done by Williams Professional Painting, this goal has been attained. Abel, Rene, and Nestor were the team that installed the walls, and Rick (the business owner) and Jose oversaw the project. The team were consummate professionals. They have a lot of experience with installing Quietrock EZ-Snap and Green Glue. This type of drywall install is intensive work that requires specific skill and experience; for example, Green Glue cures fast after application, so walls with Green Glue need to be put up right after glue application. Abel and team knew all the details and did everything perfectly, including not only the Quietrock EZ-Snap and Green Glue install, but also extensively sealing all seams with acoustical caulk (Green Glue Noiseproofing Sealant was used for this), extending the electrical/cable/phone outlets and switches and adding Quietputty around them, putting back floor trim perfectly, and adding door trims (which Abel and team made) around room closet doors to match new wall thickness. At the end, they painted the room and the ceiling. They did a great job, engineering-wise (the soundproofing works great), and aesthetically (the walls, corners, ceiling, outlets, etc. look perfect, you wouldn't guess that a second layer has been added over the original). The painting job was also great. In addition, they finished in the timeframe initially agreed upon, and were attentive and responsive (to my many questions) throughout the project. Their work produced minimal amount of dust (they are pros at cutting & handling drywall). They also left the place very clean. In conclusion, a great experience.