The thermal insulation at home is essential to avoid having to turn both heating and use the heat it produces. The heat escapes us through the windows through the glass, frame and attachment of the window with the wall. The best option to change the windows for a good thermal insulation is insulated windows if we cannot replace the windows in full we can at least use some tricks to insulate exterior window box between Isolate the window frame. The most common choice is the weather stripping along the fixed window frame. There weather-strip rubber, foam and silicone. They get that closing our windows is waterproof and insulate the outside.
Then to insulate exterior is window box Isolate the box window blinds. Sometimes we forget the box blinds, which happen to be an outward through. Is essential to isolate the interior of the box without hampering the shutters thereof.
12 Photos Gallery of: The Exterior Window Box
Sealing around exterior window box often the cold comes through small gaps between the window frame and the wall. In these cases the most effective is sealed with polyurethane foam. Requires skill to apply the right amount of foam and, once dry, trim the excess, sanded and painted.