Todd Shear

Interior view of The Museum of the Moving Image (MOMI)

Avoiding the Dual Vapor Barrier Trap—Why Mineral Wool Is a Smart Choice for Commercial Walls

Why understanding vapor permeability—not just R-value—can make or break the long-term performance of commercial wall assemblies.

Todd Shear

February 4, 2026

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Whether you’re a specifying architect, general contractor or facility manager, virtually everyone in commercial construction is under pressure to meet energy codes and build tighter envelopes. But without careful consideration, that approach can unintentionally create a dual vapor barrier.

Credits 1 AIA LU/HSW; 0.1 ICC CEU

This course will explore the pivotal role architects and lighting design play in creating safer, more sustainable spaces. Learn how to avoid common lighting mistakes and make informed decisions that create the best visual environment for occupants.

Todd Shear

ARTICLES

Avoiding the Dual Vapor Barrier Trap—Why Mineral Wool Is a Smart Choice for Commercial Walls

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