It’s especially useful for stated buildings or Homes in conservation parts where window alternative isn’t permitted. Excellent Sounds Reduction: When appropriately mounted, secondary glazing can minimize exterior sound by around 80% (compared to solitary glazing), usually performing much better than common double glazing mainly because of the bigger air hole https://buildingregulations65320.alltdesign.com/the-best-side-of-secondary-glazing-55824757