It used to be that window glass replacement on a broken double-paned window was a cheap fix—a piece of glass, some glazing compound and a few minutes of work—and then tell the kids to play ...

Test it yourself by touching the inside of a window on a cold day. If it’s single-pane glass, it will feel cold. If it’s double- or triple-pane, it won’t. Insulated glass consists of two or ...

Some double-hung windows in our tests are better than others ... including low-emissivity (low-E), argon-filled, and triple-pane glass. They’re sold at independent home centers.

Foggy windows might seem like a minor inconvenience at first—a little bit of mist or haze between the glass panes doesn’t ...