Are your home windows energy efficient? If not, then perhaps it's time for you to do some upgrading! Here we share informative contents pertaining on double glazed windows, doors and conservatories. Double glazed windows have two panes of glasses separated by a small space between 0.63 and 0.75 inches that is filled with air or nontoxic gas such as Argon. Follow us as we site the reasons why double glazed windows are the perfect choice for you.