When it comes to replacing your double glazed windows and exterior doors, you are going to want the style you that most suits your property, which is why many homeowners decide to go for a national installer who offers a wide range of door designs.
You will want a firm that is part of a trade organisation or federation, such as the glass and glazing federation (ggf) or Fensa. This ensures that their work has been authorised and that they adhere to all necessary regulations, as the last thing you’d want is poor quality workmanship.