Air Hole: The wider the gap amongst the first window as well as secondary glazing (Preferably a hundred–150mm or maybe more), the better the seem reduction. Nonetheless, massive sections remain quiet at weekends, particularly in the jap part, and it is fairly common to seek out stores, pubs and cafes https://noise-reducingglazingsyst02333.blogdon.net/the-fact-about-london-secondary-glazing-that-no-one-is-suggesting-52626114