While double-glazed windows offer various benefits, there are also some opportunity down sides to look at: Sash stops reduce the window from being compelled upwards. Moreover you can also use them to lock a sash window open up for air flow. They are visible from the outside so act as https://setting-up-a-photograpg-s30479.wssblogs.com/36710471/the-ultimate-guide-to-how-much-to-install-secondary-glazing