I am staying in fifth floor facing road, near LRT/ bus stop.
I noticed some buses stopped with a very high pitch, screeching noise which is
very annoying, coupled with some motorbikes picking up speed......
Currently my study room has four panes of sliding window (total size is 3m by 1m, LxH)
I have thought of double glazing window, and tried to call some shops.
One sales rep suggested uPVC.
Anyone had experience in installing windows that can shield off noise? Price?