Ceiling Insulation: The Science of Insulation in Connecticut Homes

In this episode, we take a deep dive into ceiling insulation and why it plays such a critical role in cold-climate homes, especially in Connecticut. From winter heat loss and the stack effect to attic moisture, mold, ice dams, and building code requirements, we break down the science behind keeping homes warmer, safer, and more energy efficient.

We’ll explore Connecticut’s current insulation standards, including R-60 attic requirements, the importance of proper air sealing, and why even the best insulation can fail if hidden ceiling bypasses are left unsealed. The episode also covers common insulation materials like cellulose, fiberglass, spray foam, and rigid foam, along with the differences between vented attics, unvented roof systems, and cathedral ceiling assemblies.

Before any insulation project begins, safety matters. We also discuss key hazards such as active knob-and-tube wiring, asbestos-containing vermiculite, mold, and roof leaks that can delay or prevent weatherization work.

Whether you’re a homeowner, contractor, energy auditor, or building professional, this episode explains what really matters above the ceiling: controlling heat, air, and moisture to create a more durable and efficient building envelope.

Nealon Insulation of Clinton, Connecticut