In layman’s terms: The bigger the air hole (cavity) involving your present window and the new secondary window, the better the level of noise reduction. An approximated 75% of households have double glazed windows, a lot of which have been mounted since the 1980s. Early patterns for sealed models are https://quality-tile-installation05948.blogars.com/25972656/a-simple-key-for-bespoke-secondary-glazing-in-fitzrovia-unveiled