The sleek look and low maintenance required for aluminum replacement windows makes them a great option for many modern homes.
Pros
Low maintenance: Aluminum requires less upkeep than wood; and most of today’s options have a factory-baked or anodized finish, which means you don’t have to worry about corroding (though you’ll read about one noteworthy exception to that rule below.)
Lightweight and strong: Aluminum is lighter than other materials, which can make it easier to install properly. It’s durable and will last longer than your typical vinyl options.
Flexibility: The material is easily manipulated, making it a good option for windows that have an unusual shape.
Narrow sight lines: The narrowness of many aluminum frames won’t distract from the view.
Reasonably priced: These frames are generally more affordable than wood or fiberglass.
Cons
Poor insulator: Aluminum doesn’t hold in heat as well as other materials. However, weather-stripping and thermal treatment can make this less of an issue.
Condensation: Moisture or even frost can form inside aluminum-frame windows, leading to problems. However, you can fix this problem by using non-conductive material between your panes.
Not beach friendly: Aluminum frames may be water resistant, but they can suffer corrosion from salt water and sea air.
