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Insulation
Insulation retards heat that moves from warm to cooler surfaces or spaces. In the winter, when warm room air exits through walls, rises up through the attic and roof,

and flows down through the floor, insulation blocks—or at least slows—its departure. And in the summer, when warm outdoor temperatures try to force their way into your air-conditioned rooms, insulation holds the heat at bay.

By slowing heat movement, insulation saves energy and also reduces drafts, making a house more comfortable. Several types of insulation are manufactured, including DIY-friendly batts and rolled “blankets” of fiberglass and rock wool; loose-fill granules, fibers, and cellulose that are poured or blown in to attics and walls; and various forms of plastic foam.

In this section of HomeTips, you will learn about the various types of insulation, how they are rated, and the different methods of installing it.


Buying Guides & Reports (6)
Installing & DIY Projects (11)
How It Works (4)