Written by the Fiveable Content Team โข Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated August 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.