Diagnostic Building Science & Testing

Optimizing residential efficiency requires moving past isolated component ratings and assessing the house as an interconnected thermodynamic system. Nominal insulation numbers often mask severe real-world deficiencies: a home can feature R-38 attic insulation and still experience massive utility bills due to unsealed top plates, bypass chases, and structural thermal bridging that bypasses the thermal barrier entirely.

Applied building science utilizes measurable diagnostics—including whole-house depressurization, air changes per hour (ACH50), and infrared thermography—to identify where the home envelope fails. Understanding the distinction between conductive resistance and dynamic whole-assembly performance ensures that retrofits address root-cause air leakage and convective loops rather than superficial cosmetic symptoms.

This hub serves as the technical reference foundation for AstroFoil. Here, we analyze testing protocols, code compliance standards (ASHRAE and IECC), and the math behind heat transmittance metrics. These guides provide homeowners, auditors, and contractors with the analytical tools necessary to quantify envelope performance before and after deep-energy retrofits.