Unlike uPVC doors which are purely plastic, composite doors are made from a number of different materials which are pressed and glued together under high pressure conditions. The materials selected specifically for their properties, and are specifically put together to counteract flaws common in single-material doors.
You may ask ‘What Are Composite Doors Made Of?’ They are much thicker than uPVC doors at 44mm compared to uPVC, which are 28mm. A good quality composite door will be made from the highest quality materials meaning they are strong, durable, secure and weather resistant.