External frames are critical components of the structure surrounding external doors and windows, serving as the framework that supports and secures these openings. These frames play a crucial role in providing structural integrity, security, and weather resistance to the entire entryway or window system.
Typically made from materials like wood, uPVC (unplasticized polyvinyl chloride), aluminium, or composite materials, external frames are chosen for their durability and ability to withstand exposure to the elements. Each material has its own set of advantages, such as the traditional warmth of wood, the low maintenance and weather resistance of uPVC, or the sleek modernity of aluminium.
The design of external frames is tailored to the specific requirements of doors and windows, ensuring a snug fit and proper alignment. These frames contribute significantly to the overall energy efficiency of a building by preventing drafts and providing a seal against air and water infiltration.