When choosing your new or replacement windows you are likely going to be faced with a host of decisions. Do you need planning permission? What material are you going to go for; uPVC, aluminium, composite? What about the style? Are you looking for casement windows, bay windows, or sliding?
But perhaps one of the most important decisions you will need to make refers to the type of glass. A choice that is a little more limited than those above, but one of incredible importance, you should fully understand what you options are. Therefore we thought we’d explain to you the difference between secondary and double glazing; a confusion which faces many who don’t quite understand how they differ.