No. Conventional double glazing will reduce the noise, but not by much. To
get a meaningful reduction you need secondary glazing spaced away from the
main windows by as much as is practical. And the thicker the glass on the
secondary glazing, the better.

Could i get away with just doing the front windows of
the house?

It depends how much noise comes in through the front as opposed to the
back. Does opening a rear window at the moment make things worse?


Ok thanks for all the advice, and thats a good point about the rear window!
I'll consider some heavy curtains, but as i'm moving soon and the double
glazing isnt
likely to add value ( because it's already pvc anyway ) so i think i'll
leave it.
Was worth finding out though! Thanks!