Improve Heat Retention.
Should your current glazing solution be draughty, or not meet todays high standards for heat retention, secondary glazing can offer a cost effective solution. Either where the primary windows are unable to be changed (eg Grade I or II listed buildings or those within conservations areas) for modern double glazed units, or where double glazed units are already installed and are not achieving the standard needed.
As seen in the table the Heat Retention benefits of Secondary Glazing can be extensive
If your suffer from excess heat in the summer - Secondary Glazing can also help keep you cooler in the summer utilising that same buffer gap between internal and external glazing.