Windows reduce traffic noise

We live on a busy road and just had secondary glazing fitted on our bedroom bay windows to reduce traffic noise. We have very beautiful sash windows and were worried that the secondary glazing would spoil the look. Andrew has installed Saint Gobain 6.4 Stadip silent laminated secondary glazing and the noise reduction is so great that we forget about the busy road. Most importantly they look very neat and discreet. Andrew is hardworking and spent the necessary time to reach a perfect result.