Composite doors are a great alternative to traditional timber doors and offer unparalleled thermal efficiency, security, durability and thermal performance. They are also extremely weatherproof. Composite doors consist of an insulating core that is designed to keep warm air trapped inside your home, while keeping cold air outside. This can save you a significant amount of money on your heating bills over time. The insulating core is covered with a durable and hard wearing skin which makes the composite door extremely rugged and weatherproof. Composite doors are available in a range of colours and can be customised further with decorative glass and practical additions such as cat flaps. As composite doors are a top of the range product, prices do start high. Prices for composite doors begin at £1000, increasing to £1500 depending on your choice of glazing. However, if this fits into your home improvement budget, the composite door is a fantastic addition to any home.