Our Heritane Double Glazing Range

Uses an irregular surface of glass which is deliberately intended to reproduce the wavy effect of late 18 th and early 19th century glass styles commonly found in period and listed buildings. We process each pane of glass to size before applying the appropriate size and thickness of lead came to the pane of glass. This pane of glass is then paired with a low emissivity glass, which refers to a material’s ability to emit heat. Regular glass has a high emissivity (~0.84), allowing most heat to pass through, whereas Low-E glass has a special coating of microscopically thin metallic oxide applied that reduces emissivity to as low as (~0.02), significantly limiting heat transfer. Think of it as an invisible sunscreen for your home: it keeps interiors cooler in summer, warmer in winter, and protects furniture from fading or developed in house.