Choose your solution
We believe that CosyGlazing is the most elegant and thermally efficient secondary glazing system available (as it also has a significant soundproofing effect). However, if soundproofing is your number one priority – above aesthetics and thermal efficiency – then there may be other systems which are better for you. For example, dense material reduces sound most effectively and therefore fitting fixed glazing panels outside or well inside your windows on a heavy frame and using soundproofing glass (which is thicker and heavier, about 6mm thick), will have the very best soundproofing effect. However, it will be difficult to open the windows.
If you like the CosyGlazing system and you don’t want to open the windows all the time, fixed CosyGlazing panels outside which are fitted to the frames (rather than opening sashes) is probably the option for you.
And if you are looking for a combination of the best aesthetics and thermal efficiency with some soundproofing then we believe integrated CosyGlazing (where you can open the windows) is the best system on the market.