Adding insulation to your home is an easy way to save on energy costs. Aluminum foil, also called tin foil, makes an excellent insulator, and in some situations, it works better than materials like cotton or paper. Aluminum foil is not best for every situation, though, so using it correctly is an important part of saving energy.
Simply sheets of pliable aluminum that are less than 0.2 mm thick, aluminum foil has several household uses. Some companies manufacture long, stronger strips specifically for insulation, but you can also use typical aluminum foil to insulate. If the foil is particularly thin, companies will sometimes laminate it with plastic, paper or other materials to make it stronger.

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