Do newer double glazed bay wundows keep sound out

[Nitgel]

Am thinking of replacing 1980s double glazed bay windows and wondered if newer units significant keep sound out? Specifically traffic noises.

I’ve nothing to compare to other than the original sash windows that were there but when we replaced them for slim glass double glazed sashes they made a massive difference to noise.

Yes they do! We've got triple glazing and despite living two streets away from a busy A road the noise is much reduced.

Yes ours helped a lot!! But did not completely reduce

Yes get acoustic glass for not much more. Not sure what is best triple or acoustic.

Ooh thanks. Acoustic glass sounds interesting.

Ah yes we had acoustic glass

We've just had new windows. Noise has reduced a little. But we also had to get trickle vents as it is now new legislation that all new windows are fitted with them except in a few circumstances. So although we have found the windows to be much better (we had different issues with our old windows), the noise isn't much different because of the vents.

I'm interested in this too... We have double glazed upvc sash-style windows in the front windows including ground and first floor bays that were put in about 15 years ago. They have the sliding sashes like the original wooden ones would have had and for plastic windows, look okay externally. But for all the soundproofing they give us, they might as well be open! I can hear a pin drop/people's voices/footsteps outside... cars sound like they're inside, though thankfully it's a quiet road. We often think a window has been left open!

Apart from being oldish windows now, I've heard it might be because the channel/recess where the old sash mechanism went hasn't been properly filled with soundproof material (not sure what that would be) so it's a bit like an amplifying echo chamber maybe. Also, the brushes that seal when shut aren't very good and when shut, and the catches aren't that tight so the windows never seem to have a tight seal. Don't think it's acoustic glass. We're looking at replacing but no idea where to start. No trickle vents. A drafty old Victorian house here so not sure would need them.

We had acoustic double glazed accoya sash windows fitted at the front of our Georgian house on a rural A-road in 2014. It made a slight difference, but not significant imo, although I'm extremely sensitive to noise.

If we'd been staying there (we planned to sell shortly afterwards and did, in Dec the same year) I think we'd have added secondary glazing. Or better still, had triple glazing.

However, I think the fact they were sash windows didn't help - if it hadn't been a period property and we could have chosen casement windows, it might have been different.