Insulated Foundations Made Easy by Alex Wilson Building insulated poured-concrete foundations can be a big drain on time and energy. Along with the typical tasks that go with forming and pouring foundations—caring for the forms themselves, smoothing rough concrete edges, waterproofing, etc.— you need to install the insulation in a way that protects it from damage. It's no wonder that foundations are often considered the worst phase of a building project. And it's no wonder that they are seldom insulated to appropriate standards. Often, they are not insulated at all. Four products are out on the market—two for full foundation walls and two for slabs—that aim to make this process easier. More than that, they claim to provide more strength, fewer voids to invite