Best windows for sound insulation

roadweary

Vitor said:

In my last house I went for the 6mm laminated glass outer and the 4mm glass inner to stop resonance between the panes. Unfortunately the Building Regulations for England and Wales 2022 now require trickle vents in new or replacement units which ruins any benefit to reducing transmitted noise.

Even specifying acoustic trickle vents doesn't help much, the pen-pushers as usual didn't think it through.

Is there any way of blocking them up?