Product options: Glass and acrylic are the most typical resources used for secondary glazing. Acrylic is lighter and less costly but may not present exactly the same volume of noise reduction. ❌ Skipping insulation underneath the heating system → Heat will escape downwards as opposed to upwards. Usually use insulation boards. https://bathroomandkitchentilingl26048.yomoblog.com/41351993/acoustic-secondary-glazing-an-overview