We asked DGA to replace our old sliding bedroom window specifically for noise insulation. Once we experienced our new “whisper glass” awning window, we couldn’t stop at one room. Not only did it stop the noise, it also kept the bedroom much cooler. We kept getting DGA back to do other windows we were that impressed with the quality of the installation and the windows. Chief installer Jarrad and Robert are true craftsmen, with such attention to detail. There was no damage to our walls, they worked cleanly and quietly and were very professional to deal with. They also came back to replace our old back sliding security screen door with Invisimesh including pet door. Again, such a brilliant job. Will, who manages the jobs, was so attentive and always kept us informed all the way along the project. We felt the quotations were fair, given the quality of the work and the Australian materials.