Double glazing is an even better thermal insulator than secondary glazing; nevertheless secondary glazing is better at retaining out noise air pollution. Installation may have a huge effect likewise. If a window is just not correctly mounted, audio, h2o and air can all seep in. Warmth blocking and insulating products https://kylernrojf.kylieblog.com/26787088/new-step-by-step-map-for-retrofit-double-glazing-in-london-wc1a