More than half of homeowners say they would be happy to pay more for an energy-efficient home in the future. If you are thinking of double glazed French doors, here is a complete guide.
Some 60 per cent of people polled didn’t know that insulation also helps keep homes cooler in the summer.
But 6 out of 10 homes have double glazing, some of which really needs to be replaced. Replacement Windows – How Much Does it Cost to Replace Windows?