Vinduesrammer

Vinduesrammer are the structural borders of a window unit, forming the perimeter that holds the glazing in place, supports hardware, and defines the opening’s size and shape. They transfer loads to the building structure, provide weather sealing, and contribute to the window’s thermal performance. The term is used in Nordic contexts to refer to the frame that surrounds the glass.

Most frames are made from wood, uPVC (PVC), aluminum, or composites. Wood frames offer a traditional appearance and good insulation but require regular maintenance. uPVC frames are durable, low-maintenance, and cost-effective but can be less robust in extreme conditions. Aluminum frames are strong with slim sightlines, often used for large panes, and typically include a thermal break to reduce heat transfer. Hybrid or composite frames combine materials, such as a wood interior with an aluminum exterior, to balance aesthetics and performance.

Frames come in various configurations, including casement, sash (tilt-and-turn or double-hung), sliding, and fixed units. The frame surrounds and supports the sash or glazing unit and provides channels for drainage, locks, and hinges.

Performance depends on design and installation. Thermal breaks, multi-chamber profiles, and effective sealing reduce heat loss and air leakage. Modern frames commonly accommodate double or triple glazing and low-emissivity coatings. Proper installation, including flashing and sealing against moisture, is essential for long-term durability and energy efficiency.

Maintenance involves cleaning, painting or refinishing wood as needed, inspecting seals and hardware, and ensuring drainage paths remain clear.