In winter, the inner surfaces of window glass can be 5 to 20 degrees cooler than the indoor air, depending on the window’s thermal efficiency and how cold it is outside.
Indoor air cools as it passes over the window and sinks, producing an uncomfortable draft. Insulated glass with a low U-value is warmer and improves comfort near windows.
Also, the larger the glass surface, the more it needs a low-E coating, a microscopically thin layer of metal oxide that reflects back infrared energy. Without the coating, the heat flowing out from your body would flow to and through the glass, increasing discomforting. But, with a low-E coating bounces the infrared energy back, so you feel warmer.
At West Coast Vinyl we offer 3rd generation Cardinal glass with low-E coated.
