Insulation Basics: What to Know About Spray Foam

Why is SPF so popular in the United States? Spray foam has the potential to tackle air leakages better than many other insulation options. Because it is sprayed into place, the foam can fill up cavities and block any small holes that could compromise your building envelope. It can be applied to vertical or horizontal surfaces to act not only as thermal insulation, but also as an air barrier. It’s synthetic and does not attract rodents or insects. When applied properly, spray foam can contribute to a successful energy-efficiency strategy.

As with many aspects of the building market, there are variations in what is considered common around the world. Here in Italy, for example, spray-foam insulation has not taken hold of the market as it has in the U.S., for a variety of reasons outside the scope of this idea book. As a result, it is more difficult to find installers here, although there are versions of SPF available on the European market.