U.S. Army Corps Air Leakage Testing Protocol
U.S. Army Corps of Engineers Air Leakage Test Protocol for Building Envelopes
What it measures
The federal protocol for whole-building air leakage testing, with a pass threshold of 0.25 cfm per square foot of envelope at 75 pascals.
Why it matters for a panel envelope
It is the strictest widely used air-tightness requirement in US construction, and it made air barriers a delivered result rather than an intention.
Guardian Shield™
Listed among the Shield™ specification's references. Guardian states an air-tightness test guaranteed pass.
Source · 3-Part Specification, 1.3 H; Market page · Guardian documents
Written by Data Subsystems, for Guardian Structural Technologies. Last updated .
Drafted from Guardian Structural product literature and published building-science sources. Awaiting Guardian technical review. Confirm any figure against the current product documents or ask us before you rely on it in a design.