The thermal insulation that double-glazed windows provide can make a difference to your energy bill, but that isn't the only ...

The double glazing expert added: "PIV units have several great benefits for your home, including improving the quality of air ...

This creates your 'double glazing' on one glass, whilst your other is 'single glazed'. If you've got a heatproof table mat, then put the glasses on these to help avoid heat loss through the table.