Fixing Jalousie windows that leaks air

[Bernadeau C.]

Does anyone know if its possible to fix Jalousie windows that leaks air, so that they can shut tightly?

[Jason Brown]

I just had this same issue with a condo flip on Miami Beach. the jalousie windows were not closing very tightly and the air was escaping and insects were also getting in. I called a window guy I use and he basically dismantled the entire louver mechanism that controls the shutters themselves and then cleaned them as well as each shutter joint. It closed much tighter after that but still wasn't air tight. jalousie windows by definition will never be air tight unfortunately but they should be tight enough to prevent insects from entering. depending on the condition of yours maybe swap them out for regular windows if the energy efficiency is what you're looking for. mine was in a condo so i had to keep with the same window style.