♻️ap environmental science review

Double-layered walls

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

Double-layered walls refer to an energy-efficient building design technique where two layers of walls are constructed with an air gap between them. This air gap acts as insulation, reducing heat transfer and improving energy efficiency.

"Double-layered walls" also found in: