What makes door energy efficient?
If a door has any glass, it must have multiple panes of glass so that it can be tightly sealed to the frame. The door's core must have specific wood cladding, fiberglass or polyurethane foam to keep the door tightly sealed.
The material, core, and glass of a door affect how much heat flows through it and how much air leaks out. Windows World doors are built with high-quality materials and advanced technology, which makes them more efficient at keeping the heat in and standing out.
The energy efficiency of materials like doors and building materials is measured with U-factor and R-value ratings. A rating system with the name of U-factor and R-value is used to measure the energy efficiency of doors.
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